IllustrationWHILE DRIVING AT 20 MPH THE OIL PUMP WENT WHICH THROUGH THE WHOLE ENGINE OFF BENT THE VALES WHICH CAUSED THE CHAIN TO SKIP OVER THE CAMS ALWAYS KEPT THE OIL CHANGED UP KEEP WAS ALWAYS GOOD ONLY 138.000 MILES NEVER BUY CHEVY AGAIN.
2008 Chevrolet Hhr
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2008 Chevrolet Hhr do not stand out strongly from the model-year median of 565.5.
About this comparison →How this year compares
Owner complaints by model year
Compare all Hhr years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
740–25K
7125–50K
9750–75K
11175–100K
110100–150K
36150K+
499 reports with mileage · 117 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Steering. Review the 297 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 108 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel/propulsion System. Review the 71 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
30 crash reports6 fire reports21 injury reports
Engine complaints
20 reportsWAS AT A STOP SIGN AND WENT TO CROSS THE HIGHWAY GOT HALFWAY ACROSS AND RELIED THE CAR WAS SLOWING DOWN LOOKED AT DASHBOARD AND EVERYTHING LOK NORMAL MADE IT ACROSS HIGHWAY SAFELY AND PULLED OVER ENGINE WAS NOT RUNNING PUT CAR IN PARK AND RESTARTED THE CAR PROCEEDED HOME TO FIND THE DOORS WOULD NOT LOCK WITH INTERIOR BUTTONS OR …
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WAS AT A STOP SIGN AND WENT TO CROSS THE HIGHWAY GOT HALFWAY ACROSS AND RELIED THE CAR WAS SLOWING DOWN LOOKED AT DASHBOARD AND EVERYTHING LOK NORMAL MADE IT ACROSS HIGHWAY SAFELY AND PULLED OVER ENGINE WAS NOT RUNNING PUT CAR IN PARK AND RESTARTED THE CAR PROCEEDED HOME TO FIND THE DOORS WOULD NOT LOCK WITH INTERIOR BUTTONS OR REMOTE THE REMOTE WILL TURN ON THE ALARM YOU CAN MANUALLY LOCK THE DOORS BUT YOU CAN'T LOCK THE HATCH UPDATE 9/15/15*CW
TL* THE CONTACT OWNS A 2008 CHEVROLET HHR. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE ENGINE STALLED AND THE WINDSHIELD WIPER ACTIVATED INDEPENDENTLY. THE CONTACT MENTIONED THAT WHENEVER ANY OF THE ELECTRICAL COMPONENTS WERE TURNED ON THE VEHICLE WOULD AUTOMATICALLY TURN OFF. THE VEHICLE WAS NOT TAKEN TO DEALER…
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TL* THE CONTACT OWNS A 2008 CHEVROLET HHR. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE ENGINE STALLED AND THE WINDSHIELD WIPER ACTIVATED INDEPENDENTLY. THE CONTACT MENTIONED THAT WHENEVER ANY OF THE ELECTRICAL COMPONENTS WERE TURNED ON THE VEHICLE WOULD AUTOMATICALLY TURN OFF. THE VEHICLE WAS NOT TAKEN TO DEALER OR INDEPENDENT MECHANIC. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS UNKNOWN.
TL* THE CONTACT OWNS A 2008 CHEVROLET HHR. WHILE DRIVING 50 MPH, THE VEHICLE DECELERATED ON ITS OWN AND THE ENGINE STALLED INTERMITTENTLY. THE VEHICLE WAS MERGED TO THE SIDE OF THE ROAD AND ABLE TO BE RESTARTED. THE ENGINE WARNING INDICATOR ILLUMINATED. THE DEALER WAS UNABLE TO DIAGNOSE THE CAUSE OF THE FAILURE. THE VEHICLE WAS …
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TL* THE CONTACT OWNS A 2008 CHEVROLET HHR. WHILE DRIVING 50 MPH, THE VEHICLE DECELERATED ON ITS OWN AND THE ENGINE STALLED INTERMITTENTLY. THE VEHICLE WAS MERGED TO THE SIDE OF THE ROAD AND ABLE TO BE RESTARTED. THE ENGINE WARNING INDICATOR ILLUMINATED. THE DEALER WAS UNABLE TO DIAGNOSE THE CAUSE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED AND THE MANUFACTURER WAS NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 133,000. UPDATED 10/22/14*CN UPDATED 08/28/2017*CT
TL* THE CONTACT OWNS A 2008 CHEVROLET HHR. THE CONTACT STATED THAT THE DOORS INSIDE THE VEHICLE COULD NOT BE OPENED. AS A RESULT, THE CONTACT WAS LOCKED INSIDE THE VEHICLE. THE AUTOMATIC LOCK BUTTON HAD TO BE PRESSED NUMEROUS TIMES IN ORDER TO OPEN THE DOORS. THE DEALER REPAIRED THE VEHICLE, BUT THE FAILURE RECURRED. THE MANUFAC…
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TL* THE CONTACT OWNS A 2008 CHEVROLET HHR. THE CONTACT STATED THAT THE DOORS INSIDE THE VEHICLE COULD NOT BE OPENED. AS A RESULT, THE CONTACT WAS LOCKED INSIDE THE VEHICLE. THE AUTOMATIC LOCK BUTTON HAD TO BE PRESSED NUMEROUS TIMES IN ORDER TO OPEN THE DOORS. THE DEALER REPAIRED THE VEHICLE, BUT THE FAILURE RECURRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 15,663. THE CONSUMER STATED THE BODY AND TRIM WERE DEFECTIVE, DUE TO THE DOOR LOCKS GETTING STUCK HALF WAY AND THE DOORS WOULD NOT UNLOCK, THE ELECTRICAL SYSTEM WAS ALSO DEFECTIVE, AS THE RADIO AND CD PLAYER WERE INOPERATIVE, AND THE ENGINE WOULD NOT START AT TIMES. UPDATED 09/17/14
TL* THE CONTACT OWNS A 2008 CHEVROLET HHR. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 30 MPH, THERE WAS A SUDDEN LOSS ON ENGINE POWER AS THE ELECTRONIC THROTTLE CONTROL WARNING LIGHT ILLUMINATED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURE WAS MADE AWARE. OF THE FAILURE. THE FAILURE AND CURRENT MILEAGE WA…
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TL* THE CONTACT OWNS A 2008 CHEVROLET HHR. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 30 MPH, THERE WAS A SUDDEN LOSS ON ENGINE POWER AS THE ELECTRONIC THROTTLE CONTROL WARNING LIGHT ILLUMINATED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURE WAS MADE AWARE. OF THE FAILURE. THE FAILURE AND CURRENT MILEAGE WAS 51,000...UPDATED 08-28-14 *BF
AROUND APRIL MY CAR STARTED TO HAVE A HARD TIME ACCELERATING. A WARNING CANE ON THE DASH THAT READ "LOOSING ENGINEPOWER" OR WORDS TO THAT EFFECT. WHEN I WOULD BRAKE MY CAR WOULD SHAKE. WHEN I WOULD DRIVE AT ABOUT 35 MY CAR STEERING WHEEL WOULD START B TO SHAKE AND WAS HARD TO CONTROL. I TOOK IT TO MY LOCAL CHEVY DEALERSHIP W…
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AROUND APRIL MY CAR STARTED TO HAVE A HARD TIME ACCELERATING. A WARNING CANE ON THE DASH THAT READ "LOOSING ENGINEPOWER" OR WORDS TO THAT EFFECT. WHEN I WOULD BRAKE MY CAR WOULD SHAKE. WHEN I WOULD DRIVE AT ABOUT 35 MY CAR STEERING WHEEL WOULD START B TO SHAKE AND WAS HARD TO CONTROL. I TOOK IT TO MY LOCAL CHEVY DEALERSHIP WHERE I HAD THE OIL CHANGE, ALL FOUR BREAKS REPLACED, THE TECH TOOK A RIDE WITH ME TO HEAR AND FEEL WHAT MY CAR HAD BEEN DOING. HE SAID HE DIDN'T KNOW WHAT IT WAS BUT RAN A DIAGNOSTIC ON IT AND IT SAID MULTIPLE THINGS MAYBE WRONG WITH, SUCH AS THE FUEL INJECTOR, THE TURBO HAD CAME UP AND A FUEL REGULATOR AND THE ELECTRICAL SYSTEM. I ASKED IF IT WAS SAFE TO DRIVE AND THEY INSURED ME IT WAS. MY CAR CONTINUED TO MAKE ALL THESE SOUNDS AND STRUGGLED TO ACCELERATE AND THE BREAKS WERE STILL SLIPPING. ON APRIL 17TH I WAS DRIVING ON MY SON'S FIELD TRIP AND SUDDENLY MY CAR STARTED TO LOSE POWER. I PULLED OVER TO SIDE OF THE INTERSTATE AT THE TRUCK STOP. I TURNED MY CAR OFF AND OIL WAS EVERY WHERE. I HAD MY CAR TOWED TO THE LOCAL DEALERSHIP WHERE I PURCHASED THE CAR. THEY SAID THE TIMING CHAIN HAD BROKE, CAUSING MAJOR DAMAGE TO MY ENGINE. I WILL HAVE TO REPLACE MY ENGINE. HAD MY CAR BEEN PROPERLY DIAGNOSED, THIS COULD HAVE BEEN PREVENTED. I AM NOW OUT I FOUND A VEHICLE DUE TO THIS MISDIAGNOSIS. I HAVE HAD THIS CAR FOR ALMOST 2 YEARS. *TR
TL* THE CONTACT OWNS A 2008 CHEVROLET HHR. THE CONTACT STATED THAT WHILE DRIVING AT AN UNKNOWN SPEED, THE VEHICLE STALLED WITHOUT WARNING AND CAUSED THE CONTACT TO LOSE CONTROL OF THE VEHICLE, CRASHING INTO AN EMBANKMENT. A POLICE REPORT WAS NOT FILED AND THE DRIVER SUSTAINED A SHOULDER INJURY. THE VEHICLE WAS NOT TAKEN TO THE D…
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TL* THE CONTACT OWNS A 2008 CHEVROLET HHR. THE CONTACT STATED THAT WHILE DRIVING AT AN UNKNOWN SPEED, THE VEHICLE STALLED WITHOUT WARNING AND CAUSED THE CONTACT TO LOSE CONTROL OF THE VEHICLE, CRASHING INTO AN EMBANKMENT. A POLICE REPORT WAS NOT FILED AND THE DRIVER SUSTAINED A SHOULDER INJURY. THE VEHICLE WAS NOT TAKEN TO THE DEALER. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 90,000.
TL* THE CONTACT OWNS A 2008 CHEVROLET HHR. WHILE DRIVING 20 MPH, THE CONTACT DROVE OVER A POTHOLE AND THE VEHICLE STALLED WITHOUT WARNING. THE CONTACT LOST CONTROL OF THE VEHICLE AND CRASHED INTO ANOTHER VEHICLE. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE VEHICLE WAS NOT TAKEN TO THE DEALER. THE MANUFACTURE…
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TL* THE CONTACT OWNS A 2008 CHEVROLET HHR. WHILE DRIVING 20 MPH, THE CONTACT DROVE OVER A POTHOLE AND THE VEHICLE STALLED WITHOUT WARNING. THE CONTACT LOST CONTROL OF THE VEHICLE AND CRASHED INTO ANOTHER VEHICLE. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE VEHICLE WAS NOT TAKEN TO THE DEALER. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VEHICLE HAD NOT BEEN REPAIRED. THE FAILURE MILEAGE WAS 111,098.
EXHAUST FUMES COMING INTO CABIN WHEN HEATER IS TURNED ON. CAUSED BY FAULTY, CRACKED FLEX JOINT ON DOWNPIPE, CONNECTED TO EXHAUST MANIFOLD. HAVE TO RIDE WITH WINDOWS CRACKED FOR FRESH AIR. GM REFUSED TO REPAIR. STATED OUTSIDE 80,000 MILE EMISSIONS WARRANTY. CAR HAS 82,419 MILES. *TR
Official recalls
414V171000 · Electrical System:ignition
Apr 10, 2014
General Motors LLC (GM) is recalling certain model year 2005-2010 Chevrolet Cobalt, 2006-2011 Chevrolet HHR, 2007-2010 Pontiac G5, 2006-2010 Pontiac Solstice, 2003-2007 Saturn Ion, and 2007-2010 Saturn Sky vehicles. In the affected vehicles, the key can be removed from the ignition when the ignition is not in the "Off" position.
Consequence & remedy
Consequence: If the key can be removed from the ignition when the ignition is not in the "off" position, the vehicle could roll away: (a) for an automatic transmission, if the transmission is not in the "Park" position; or (b) for a manual transmission, if the parking brake is not engaged and the transmission is not in the "Reverse" position. This potential for rollaway increases the risk for a crash and occupant or pedestrian injuries.
Remedy: General Motors will notify owners, and for vehicles that were built with the defective ignition cylinder and have not previously had the ignition cylinder replaced with the redesigned part, dealers will replace the ignition cylinder and cut and, if necessary, re-learn two ignition/door keys for each vehicle. For vehicles that were built with the redesigned ignition cylinder or had the ignition cylinder replaced with the redesigned part, dealers will cut and, if necessary, re-learn two ignition/door keys for each vehicle. The recall began on April 18, 2014. Chevrolet owners may contact General Motors at 1-800-222-1020, Pontiac owners at 1-800-762-2737, and Saturn owners at 1-800-553-6000. General Motors' number for this recall is 14113 for the ignition lock cylinder and key replacement, and 14133 for only key replacements. Note: Until a vehicle has been remedied, owners and operators are advised that when exiting, to be sure that the vehicle is in "Park," or in the case of a manual transmission, that the vehicle is in the "Reverse" position and the parking brake is engaged.
14V047000 · Air Bags; Electrical System:ignition:switch
Feb 10, 2014
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. General Motors LLC (GM) notified the agency on February 10, 2014 that they are recalling 619,122 model year 2005-2007 Chevrolet Cobalt, and 2007 Pontiac G5 vehicles. On February 25, 2014, GM increased the recall to include an additional 748,024 model year 2006-2007 Chevrolet HHR and Pontiac Solstice vehicles and 2003-2007 Saturn Ion vehicles and 2007 Saturn Sky vehicles. In these models, the weight on the key ring and/or road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine. On March 27, 2014, GM notified the agency that the defective ignition switches may have been used as service replacement parts on other vehicles, and as a result GM will be recalling certain model year 2008-2010 Chevrolet Cobalt, Saturn Sky, and Pontiac G5 and Solstice, and 2008-2011 Chevrolet HHR vehicles. The part numbers for the service parts are 10392423 (a/k/a ACDelco D1461F), 10392737, 15857948, 15854953, 15896640, and 25846762. This expansion represents an additional 823,788 vehicles.
Consequence & remedy
Consequence: If the key is not in the run position, the air bags may not deploy if the vehicle is involved in a crash, increasing the risk of injury.
Remedy: GM will notify owners, and dealers will replace the ignition switch, free of charge. An interim notification was issued to owners of 2007 and earlier models on March 10, 2014, informing them of the safety defect. Owners of 2008 and later vehicles will be mailed an interim letter on April 21, 2014. All affected owners will receive another letter once parts are available. The recall began on April 18, 2014. Owners may contact Chevrolet at 1-800-222-1020, Pontiac at 1-800-762-2737 or Saturn at 1-800-553-6000. GM's number for the initial recall is 13454 and 14063 for the expansion. GMs recall number for the vehicles that may have received the replacement parts is 14092. Note: Until the recall repairs have been performed, it is very important that customers remove all items from their key rings, leaving only the vehicle key. The key fob (if applicable), should also be removed from the key ring. Always wear your seatbelt.
Additional source detail variants (2)
Air Bags
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. General Motors LLC (GM) notified the agency on February 10, 2014 that they are recalling 619,122 model year 2005-2007 Chevrolet Cobalt, and 2007 Pontiac G5 vehicles. On February 25, 2014, GM increased the recall to include an additional 748,024 model year 2006-2007 Chevrolet HHR and Pontiac Solstice vehicles and 2003-2007 Saturn Ion vehicles and 2007 Saturn Sky vehicles. In these models, the weight on the key ring and/or road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine. On March 27, 2014, GM notified the agency that the defective ignition switches may have been used as service replacement parts on other vehicles, and as a result GM will be recalling certain model year 2008-2010 Chevrolet Cobalt, Saturn Sky, and Pontiac G5 and Solstice, and 2008-2011 Chevrolet HHR vehicles. The part numbers for the service parts are 10392423 (a/k/a ACDelco D1461F), 10392737, 15857948, 15854953, 15896640, and 25846762. This expansion represents an additional 823,788 vehicles.
Consequence: If the key is not in the run position, the air bags may not deploy if the vehicle is involved in a crash, increasing the risk of injury.
Remedy: GM will notify owners, and dealers will replace the ignition switch, free of charge. An interim notification was issued to owners of 2007 and earlier models on March 10, 2014, informing them of the safety defect. Owners of 2008 and later vehicles will be mailed an interim letter on April 21, 2014. All affected owners will receive another letter once parts are available. The recall began on April 18, 2014. Owners may contact Chevrolet at 1-800-222-1020, Pontiac at 1-800-762-2737 or Saturn at 1-800-553-6000. GM's number for the initial recall is 13454 and 14063 for the expansion. GMs recall number for the vehicles that may have received the replacement parts is 14092. Note: Until the recall repairs have been performed, it is very important that customers remove all items from their key rings, leaving only the vehicle key. The key fob (if applicable), should also be removed from the key ring. Always wear your seatbelt.
Electrical System:ignition:switch
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. General Motors LLC (GM) notified the agency on February 10, 2014 that they are recalling 619,122 model year 2005-2007 Chevrolet Cobalt, and 2007 Pontiac G5 vehicles. On February 25, 2014, GM increased the recall to include an additional 748,024 model year 2006-2007 Chevrolet HHR and Pontiac Solstice vehicles and 2003-2007 Saturn Ion vehicles and 2007 Saturn Sky vehicles. In these models, the weight on the key ring and/or road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine. On March 27, 2014, GM notified the agency that the defective ignition switches may have been used as service replacement parts on other vehicles, and as a result GM will be recalling certain model year 2008-2010 Chevrolet Cobalt, Saturn Sky, and Pontiac G5 and Solstice, and 2008-2011 Chevrolet HHR vehicles. The part numbers for the service parts are 10392423 (a/k/a ACDelco D1461F), 10392737, 15857948, 15854953, 15896640, and 25846762. This expansion represents an additional 823,788 vehicles.
Consequence: If the key is not in the run position, the air bags may not deploy if the vehicle is involved in a crash, increasing the risk of injury.
Remedy: GM will notify owners, and dealers will replace the ignition switch, free of charge. An interim notification was issued to owners of 2007 and earlier models on March 10, 2014, informing them of the safety defect. Owners of 2008 and later vehicles will be mailed an interim letter on April 21, 2014. All affected owners will receive another letter once parts are available. The recall began on April 18, 2014. Owners may contact Chevrolet at 1-800-222-1020, Pontiac at 1-800-762-2737 or Saturn at 1-800-553-6000. GM's number for the initial recall is 13454 and 14063 for the expansion. GMs recall number for the vehicles that may have received the replacement parts is 14092. Note: Until the recall repairs have been performed, it is very important that customers remove all items from their key rings, leaving only the vehicle key. The key fob (if applicable), should also be removed from the key ring. Always wear your seatbelt.
08V444000 · Latches/locks/linkages:doors:latch
Sep 3, 2008
GM IS RECALLING 296,422 MY 2006-2008 CHEVROLET HHR VEHICLES FOR FAILING TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 201, 'OCCUPANT PROTECTION IN INTERIOR IMPACT." THE DOOR ON THE STORAGE BIN IN THE TOP CENTER OF THE INSTRUMENT PANEL FAILED TO REMAIN CLOSED AS REQUIRED.
Consequence & remedy
Consequence: THIS STANDARD SPECIFIES PERFORMANCE REQUIREMENTS TO PROVIDE HEAD IMPACT PROTECTION FOR OCCUPANTS.
Remedy: A REDESIGNED LATCH WILL BE MADE AVAILABLE. THE RECALL BEGAN ON DECEMBER 23, 2008. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, OR THROUGH THEIR WEBSITE AT <A HREF=HTTP://WWW.GMOWNERCENTER.COM>HTTP://WWW.GMOWNERCENTER.COM</A> .
08V046000 · Air Bags
Jan 30, 2008
GM IS RECALLING 181,516 MY 2006-2008 CHEVROLET HHR VEHICLES NOT EQUIPPED WITH OPTIONAL ROOF RAIL AIR BAGS FOR FAILING TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 201, 'OCCUPANT PROTECTION IN INTERIOR IMPACT.' IN TESTS, ONE OF THE UPPER INTERIOR OCCUPANT PROTECTION TEST POINTS EXCEEDED THE STANDARD'S REQUIREMENT.
Consequence & remedy
Consequence: THIS STANDARD SPECIFIES PERFORMANCE REQUIREMENTS TO PROVIDE HEAD IMPACT PROTECTION FOR OCCUPANTS.
Remedy: DEALERS WILL INSTALL AN ENERGY-ABSORBING PLASTIC PIECE TO THE HEADLINER TRIM. THE RECALL BEGAN ON APRIL 2, 2008. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438 OR THROUGH THEIR WEBSITE AT <A HREF=HTTP://WWW.GMOWNERCENTER.COM>HTTP://WWW.GMOWNERCENTER.COM</A> .
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1PE20011 · Fuel Line Leak
Opened Jul 5, 2020 · Closed Aug 17, 2023
Status: closed (inferred from source dates) · Fuel System, Gasoline; Fuel System, Other:delivery:hoses, Lines/piping, And Fittings; Fuel/propulsion System
On July 5, 2020, the Office of Defects Investigations (ODI) opened PE20-011 to investigate instances of metal fuel lines under the vehicle corroding and leaking fuel in model year (MY) 2008 through 2010 Chevrolet Cobalt and 2008 through 2009 Chevrolet HHR passenger cars manufactured by General Motors (GM). The metal fuel lines are corroding and leaking fuel in the area between the front and rear wheels on the driver's side of the vehicle before the muffler. Most consumers allege a fuel odor and/or an observable fuel leak that alerts them to the condition.The subject metal fuel lines have a protective AGE coating and, in the vicinity of the left rear wheel, are further wrapped in a foil heat shield. The AGE coating consists of an annealed zinc aluminum alloy metal coating with extended corrosion protection paint. Under certain conditions, water and corrosive road deicing agents may enter a crevice between the heat shield and the AGE coating. With extended environmental exposure in high corrosive environments, the AGE coating can degrade. If it degrades enough, the base metal lines may begin to corrode beneath the heat shield.Corrosion to the fuel lines may eventually cause a perforation to develop in the line, allowing fuel vapors to escape from between the line and the heat shield, emitting a fuel odor that will be detectable to the vehicle operator. If the corrosion progresses, fuel may begin to weep from the line. Further metal degradation due to corrosion could create a drip or a mist of fuel. If this occurs, vehicle owners may see drips, spots, or puddles on the ground near the rear portion of the vehicle, primarily along the driver's side rear wheel.The majority of allegations (85%) were reported for vehicles that are operated in the salt belt region of the United States. This area includes states in the Northeast, mid-Atlantic, and Midwest regions. Additionally, the average failure mileage in the subject vehicles is approximately 111,000 across all data sources.Considering the low manufacturer complaint/warranty rates of fuel line replacement, the fact that the majority of failures are concentrated in salt belt states, high failure mileages, as well as the field exposure time for the subject vehicles, and the highly detectable and progressive nature of this failure over time, the potential safety consequences of this issue are very low. To date, there have been no reported crashes, injuries, or fatalities related to this issue. There are two reported fires in ODI data and no reported fires in GM data. Both ODI reported fires were minor, occurred after the vehicle was parked, and were extinguished utilizing fire extinguishers.In view of the progressive failure occurring at high mileages, the age of the subject vehicles, the high detectability of the leak, and the majority of failures occurred in salt belt states, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances.Review the ODI reports cited above at nhtsa.gov under the attached identification numbers.
Additional source detail variants (3)
Fuel/propulsion System
On July 5, 2020, the Office of Defects Investigations (ODI) opened PE20-011 to investigate instances of metal fuel lines under the vehicle corroding and leaking fuel in model year (MY) 2008 through 2010 Chevrolet Cobalt and 2008 through 2009 Chevrolet HHR passenger cars manufactured by General Motors (GM). The metal fuel lines are corroding and leaking fuel in the area between the front and rear wheels on the driver's side of the vehicle before the muffler. Most consumers allege a fuel odor and/or an observable fuel leak that alerts them to the condition.The subject metal fuel lines have a protective AGE coating and, in the vicinity of the left rear wheel, are further wrapped in a foil heat shield. The AGE coating consists of an annealed zinc aluminum alloy metal coating with extended corrosion protection paint. Under certain conditions, water and corrosive road deicing agents may enter a crevice between the heat shield and the AGE coating. With extended environmental exposure in high corrosive environments, the AGE coating can degrade. If it degrades enough, the base metal lines may begin to corrode beneath the heat shield.Corrosion to the fuel lines may eventually cause a perforation to develop in the line, allowing fuel vapors to escape from between the line and the heat shield, emitting a fuel odor that will be detectable to the vehicle operator. If the corrosion progresses, fuel may begin to weep from the line. Further metal degradation due to corrosion could create a drip or a mist of fuel. If this occurs, vehicle owners may see drips, spots, or puddles on the ground near the rear portion of the vehicle, primarily along the driver's side rear wheel.The majority of allegations (85%) were reported for vehicles that are operated in the salt belt region of the United States. This area includes states in the Northeast, mid-Atlantic, and Midwest regions. Additionally, the average failure mileage in the subject vehicles is approximately 111,000 across all data sources.Considering the low manufacturer complaint/warranty rates of fuel line replacement, the fact that the majority of failures are concentrated in salt belt states, high failure mileages, as well as the field exposure time for the subject vehicles, and the highly detectable and progressive nature of this failure over time, the potential safety consequences of this issue are very low. To date, there have been no reported crashes, injuries, or fatalities related to this issue. There are two reported fires in ODI data and no reported fires in GM data. Both ODI reported fires were minor, occurred after the vehicle was parked, and were extinguished utilizing fire extinguishers.In view of the progressive failure occurring at high mileages, the age of the subject vehicles, the high detectability of the leak, and the majority of failures occurred in salt belt states, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances.Review the ODI reports cited above at nhtsa.gov under the attached identification numbers.
Fuel System, Gasoline
On July 5, 2020, the Office of Defects Investigations (ODI) opened PE20-011 to investigate instances of metal fuel lines under the vehicle corroding and leaking fuel in model year (MY) 2008 through 2010 Chevrolet Cobalt and 2008 through 2009 Chevrolet HHR passenger cars manufactured by General Motors (GM). The metal fuel lines are corroding and leaking fuel in the area between the front and rear wheels on the driver's side of the vehicle before the muffler. Most consumers allege a fuel odor and/or an observable fuel leak that alerts them to the condition.The subject metal fuel lines have a protective AGE coating and, in the vicinity of the left rear wheel, are further wrapped in a foil heat shield. The AGE coating consists of an annealed zinc aluminum alloy metal coating with extended corrosion protection paint. Under certain conditions, water and corrosive road deicing agents may enter a crevice between the heat shield and the AGE coating. With extended environmental exposure in high corrosive environments, the AGE coating can degrade. If it degrades enough, the base metal lines may begin to corrode beneath the heat shield.Corrosion to the fuel lines may eventually cause a perforation to develop in the line, allowing fuel vapors to escape from between the line and the heat shield, emitting a fuel odor that will be detectable to the vehicle operator. If the corrosion progresses, fuel may begin to weep from the line. Further metal degradation due to corrosion could create a drip or a mist of fuel. If this occurs, vehicle owners may see drips, spots, or puddles on the ground near the rear portion of the vehicle, primarily along the driver's side rear wheel.The majority of allegations (85%) were reported for vehicles that are operated in the salt belt region of the United States. This area includes states in the Northeast, mid-Atlantic, and Midwest regions. Additionally, the average failure mileage in the subject vehicles is approximately 111,000 across all data sources.Considering the low manufacturer complaint/warranty rates of fuel line replacement, the fact that the majority of failures are concentrated in salt belt states, high failure mileages, as well as the field exposure time for the subject vehicles, and the highly detectable and progressive nature of this failure over time, the potential safety consequences of this issue are very low. To date, there have been no reported crashes, injuries, or fatalities related to this issue. There are two reported fires in ODI data and no reported fires in GM data. Both ODI reported fires were minor, occurred after the vehicle was parked, and were extinguished utilizing fire extinguishers.In view of the progressive failure occurring at high mileages, the age of the subject vehicles, the high detectability of the leak, and the majority of failures occurred in salt belt states, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances.Review the ODI reports cited above at nhtsa.gov under the attached identification numbers.
Fuel System, Other:delivery:hoses, Lines/piping, And Fittings
On July 5, 2020, the Office of Defects Investigations (ODI) opened PE20-011 to investigate instances of metal fuel lines under the vehicle corroding and leaking fuel in model year (MY) 2008 through 2010 Chevrolet Cobalt and 2008 through 2009 Chevrolet HHR passenger cars manufactured by General Motors (GM). The metal fuel lines are corroding and leaking fuel in the area between the front and rear wheels on the driver's side of the vehicle before the muffler. Most consumers allege a fuel odor and/or an observable fuel leak that alerts them to the condition.The subject metal fuel lines have a protective AGE coating and, in the vicinity of the left rear wheel, are further wrapped in a foil heat shield. The AGE coating consists of an annealed zinc aluminum alloy metal coating with extended corrosion protection paint. Under certain conditions, water and corrosive road deicing agents may enter a crevice between the heat shield and the AGE coating. With extended environmental exposure in high corrosive environments, the AGE coating can degrade. If it degrades enough, the base metal lines may begin to corrode beneath the heat shield.Corrosion to the fuel lines may eventually cause a perforation to develop in the line, allowing fuel vapors to escape from between the line and the heat shield, emitting a fuel odor that will be detectable to the vehicle operator. If the corrosion progresses, fuel may begin to weep from the line. Further metal degradation due to corrosion could create a drip or a mist of fuel. If this occurs, vehicle owners may see drips, spots, or puddles on the ground near the rear portion of the vehicle, primarily along the driver's side rear wheel.The majority of allegations (85%) were reported for vehicles that are operated in the salt belt region of the United States. This area includes states in the Northeast, mid-Atlantic, and Midwest regions. Additionally, the average failure mileage in the subject vehicles is approximately 111,000 across all data sources.Considering the low manufacturer complaint/warranty rates of fuel line replacement, the fact that the majority of failures are concentrated in salt belt states, high failure mileages, as well as the field exposure time for the subject vehicles, and the highly detectable and progressive nature of this failure over time, the potential safety consequences of this issue are very low. To date, there have been no reported crashes, injuries, or fatalities related to this issue. There are two reported fires in ODI data and no reported fires in GM data. Both ODI reported fires were minor, occurred after the vehicle was parked, and were extinguished utilizing fire extinguishers.In view of the progressive failure occurring at high mileages, the age of the subject vehicles, the high detectability of the leak, and the majority of failures occurred in salt belt states, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances.Review the ODI reports cited above at nhtsa.gov under the attached identification numbers.