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2023 MERCEDES-BENZ Glc 300

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2023 MERCEDES-BENZ Glc 300 do not stand out strongly from the model-year median of 55.

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How this year compares

Owner complaints by model year

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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

Limited mileage data: 6 of 55 reports include usable mileage. There isn’t enough coverage to show a useful chart.

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.

  • Electrical System. Review the 30 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 15 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Exterior Lighting. Review the 10 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

2 crash reports0 fire reports2 injury reports

What owners actually said

55 reports
10,000 miles · May 3, 2024
Electrical System

The contact owns a 2023 Mercedes-Benz GLC300. The contact stated that while he and his wife were loading the trunk of the vehicle, the trunk door independently lowered and struck his wife on the head. The contact stated that the failure occurred frequently. The contact stated that he had previously had a concussion and was conce…

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The contact owns a 2023 Mercedes-Benz GLC300. The contact stated that while he and his wife were loading the trunk of the vehicle, the trunk door independently lowered and struck his wife on the head. The contact stated that the failure occurred frequently. The contact stated that he had previously had a concussion and was concerned about being struck on the head by the trunk during the failure. The dealer was made aware of the failure, and the vehicle was diagnosed; however, the cause of the failure was not yet determined. The dealer informed the contact that the automatic open and close feature on the trunk could not be disengaged. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 10,000.

NHTSA ODI #11586735

Mileage unknown · Apr 25, 2024
Electrical SystemForward Collision AvoidanceLane Departure

Vehicle would not start, indicator displayed check owners manual, battery low. Vehicle towed to dealer

NHTSA ODI #11585120

1,000 miles · Apr 2, 2024
StructureInjury

The contact owns a 2023 Mercedes-Benz GLC300. The contact stated that while the vehicle was parked, and the contact and his wife were removing groceries from the rear of the vehicle, the tailgate was independently lifted due to the design of the keyless entry feature. The contact and his wife continued to remove items from the r…

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The contact owns a 2023 Mercedes-Benz GLC300. The contact stated that while the vehicle was parked, and the contact and his wife were removing groceries from the rear of the vehicle, the tailgate was independently lifted due to the design of the keyless entry feature. The contact and his wife continued to remove items from the rear of the vehicle and the tailgate sensor became enabled, and the tailgate closed inadvertently, striking the contact's wife on the head. The contact's wife sustained a knot on the head that remained for a week. The vehicle was taken to the dealer. The contact was informed that the feature could not be deactivated unless the contact chose to deactivate the entire keyless sensor feature. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and the contact was informed that the option would be to deactivate the entire keyless sensor. The failure mileage was approximately 1,000.

NHTSA ODI #11580776

Mileage unknown · Mar 12, 2024
Forward Collision AvoidanceService Brakes

On [XXX], I was driving at 45MPH on a two-lane state road. There was no traffic within 1/4 -1/2 mile of me on that road. There were no guardrails and the road was clear - no birds, animals, people, or construction. For no reason, the car beeped twice and automatically slammed on the brakes so forceful that everything on a sea…

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On [XXX], I was driving at 45MPH on a two-lane state road. There was no traffic within 1/4 -1/2 mile of me on that road. There were no guardrails and the road was clear - no birds, animals, people, or construction. For no reason, the car beeped twice and automatically slammed on the brakes so forceful that everything on a seat landed on the floor. Had there been a vehicle behind me, they would have almost certainly slammed into me. This is my second safety report with this vehicle, the previously reported lane keeping assist still allows me to depart my lane with no correction or indication by the system, the dashboard indicators remain green if I depart my lane without a turn signal. It has been in 5 times for this and Mercedes closed the case. They say it's fine. Lemon law attorneys in my state refuse to take cases with Mercedes so I am stuck with a vehicle that should not be allowed on US roads, can't lemon law it and can't sell it or trade it in with a clear conscience. There is a laundry list of other problems as I drive more than 25,000 miles a year but I only report those which could get myself or others killed. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI #11576799

Mileage unknown · Feb 4, 2024
Power Train

Vehicle sputter and coolant malfunction and engine light came on while driving ( 12-26-23) Took to dealer for some “ update”. After a few weeks of driving the vehicle sputter again and engine light came on again on the (1-19-2024 ) Drove home turned off , loud noises came from engine area. Tried to restart and failed a few time…

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Vehicle sputter and coolant malfunction and engine light came on while driving ( 12-26-23) Took to dealer for some “ update”. After a few weeks of driving the vehicle sputter again and engine light came on again on the (1-19-2024 ) Drove home turned off , loud noises came from engine area. Tried to restart and failed a few times so we let it’s sit for almost an hour and it’s started again with engine light still on . Towed to Mercedes dealer and after long and frustrating times a week later per dealer it’s was the 48v hybrid battery that defective/ non functional. So far we been forced to drive the vehicle “as is” since Mercedes-Benz USA refused to let local dealer to order and replace the 48v hybrid battery. It’s been 2 weeks all informations we get from dealership is that we have to wait for Mercedes to come up with new software to update to which no time frame have been provided as to when software available. We’re experiencing terrible gas mileage MPG with the 48v battery basically non functional as moment

NHTSA ODI #11569863

Mileage unknown · Jan 30, 2024
EngineExterior LightingFuel/propulsion System

I have taken the delivery of this car on May 2023 and has been having many issues including but not limited to rear seatbelt malfunction that needed replacement. Recent major issue is constant 'check engine light on' for various issues. Below is the 'F' and 'I' items from 'initial quick test log' as of [XXX] and also attaching d…

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I have taken the delivery of this car on May 2023 and has been having many issues including but not limited to rear seatbelt malfunction that needed replacement. Recent major issue is constant 'check engine light on' for various issues. Below is the 'F' and 'I' items from 'initial quick test log' as of [XXX] and also attaching detail log file. No resolution or action has been taken after several trips to the dealership in past couple of weeks and not being able to drive due to safety concern. N127 - Control unit "Drivetrain" (PTCU) -F- N73/3*1 - Electronic ignition lock - Central gateway (EZS) -I- E1n9 - Left headlamp (SG-SW-L) -I- E1n15 - Light source module control unit front left (LSM-CU-VL) -f- E2n15 - Light source module control unit front right (LSM-CU-VR) -f- E1n14 - Digital headlamp control unit front left (DHLS-CU-VL) -f- E2n14 - Digital headlamp control unit front right (DHLS-CU-VR) -f- A66 - Battery module (48 V battery) (BM48) -F B29/13 - Left rear short range radar (NBR-LR) -I- B29/14 - Right rear short range radar (NBR-RR) -I- A40/11 - Multifunction camera (MFK) -I- N62/3 - Parking system (PARK) -I- A40/8 - Central display (ZAN) -f- N133/1 - Instrument cluster (IC) -f- INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI #11568908

Mileage unknown · Jan 28, 2024
Electrical SystemEngine

Check engine light on, according to Mercedes Benz problem related to 48 V mild hybrid,I took twice car to the dealership ,they can’t reset check engine lights GLC 300 2023 With 3500 miles

NHTSA ODI #11568277

Mileage unknown · Jan 21, 2024
Unknown Or Other

I bought this car brand with 4800 miles directly from Mercedes a month ago. The check engine light has been on since the second week of ownership. The reason I’m submitting this report is because it’s been into warranty service 4 times. Each time Mercedes Benz says that it is a known issue affecting ALL GLC300 models. They als…

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I bought this car brand with 4800 miles directly from Mercedes a month ago. The check engine light has been on since the second week of ownership. The reason I’m submitting this report is because it’s been into warranty service 4 times. Each time Mercedes Benz says that it is a known issue affecting ALL GLC300 models. They also indicate that it is a software issue, but don’t have a patch for it. There are other things like Bluetooth, no radio audio, and the remote start that they are also attributing to this software glitch. However, the check engine light presents a MAJOR safety issue. Please force Mercedes to issue a software update recall to fix the incessant check engine light.

NHTSA ODI #11566824

Mileage unknown · Jan 3, 2024
EngineFuel/propulsion System

My car was in for a "Problem" Dec-2023 - would not accelerate /also getting very bad gas mileage and hesitation on accelerating. 1ST - Mercedes Benz said I got bad gas - they had the car for several days -Then they thought it was a computer issue - Later -after problem -I got a Safety Recall Notice # 23V456 stating "Fuel Pump P…

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My car was in for a "Problem" Dec-2023 - would not accelerate /also getting very bad gas mileage and hesitation on accelerating. 1ST - Mercedes Benz said I got bad gas - they had the car for several days -Then they thought it was a computer issue - Later -after problem -I got a Safety Recall Notice # 23V456 stating "Fuel Pump Problem "told would receive Official Re-Call in February -Went back to dealer with same problem -was told wait for re-call -Called 1-800-367-6372 Mercedes Benz - spoke with "Heidi on Jan 3, 2024 [Case Number [XXX] ASKED IF THEY COULD EXPEDITE RE-CALL CLAIM BEFORE FEBRUARY - MERCEDES DECLINED - If the "Fuel Pump is an issue [and Dangerous ] why not expedite ""Parts"" Mercedes Dealer wasn't aware of Re-Call number 23V456 - INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI #11563307

Mileage unknown · Jan 3, 2024
Electrical SystemEngine

This vehicle has now had three episodes where warning lights came on for no apparent reason. There have been two episodes of "Check Engine Light" coming on, the first with less than 1000 miles on the vehicle. It was driven to the dealer and they checked finding no problems and said not to worry about it. The second about two …

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This vehicle has now had three episodes where warning lights came on for no apparent reason. There have been two episodes of "Check Engine Light" coming on, the first with less than 1000 miles on the vehicle. It was driven to the dealer and they checked finding no problems and said not to worry about it. The second about two months later with an indication of "Excessive engine Temperature", but the engine was cold and just started, the fan was running very fast, but otherwise the vehicle was operable. Again, the dealer could find no problem and said to ignore it, but return if it recurred. Two months later, check engine light on again. Currently at the dealer for service for a third time. No faith in the reliability of this car with the reports of this leading to engine stalls and failure to start in other cars.

NHTSA ODI #11563288

Official recalls

12

26V481000 · Latches/locks/linkages:doors:lock

Jul 24, 2026

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020-2021 CLA, 2019-2022 A-Class, 2022-2023 C-Class, 2024 CLE, 2020-2026 GLA/GLB, and 2023-2024 GLC vehicles. Please refer to MBUSA's recall report for specific model information. The micro-switch in the driver's door lock may corrode and fail to detect an open door, preventing the electronic parking brake or "Auto-Park" feature from engaging automatically. This may result in a vehicle rollaway.

Consequence & remedy

Consequence: A vehicle rollaway increases the risk of a crash or injury.

Remedy: Dealers will replace the driver's door lock, free of charge. Owner notification letters are expected to be mailed September 18, 2026. Owners may contact MBUSA customer service at 1-800-367-6372. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning July 31, 2026.

25V533000 · Steering:critical Fasteners

Aug 20, 2025

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2026 EQE and GLC vehicles. Please see the recall report for a complete list of models. The steering coupling bolt may have been improperly tightened, allowing the steering coupling to loosen from the steering rack.

Consequence & remedy

Consequence: A loose steering coupling can cause a loss of steering control, increasing the risk of a crash.

Remedy: Dealers will tighten the steering coupling bolts as necessary, free of charge. Owner notification letters were mailed October 6, 2025. Owners may contact MBUSA customer service at 1-800-367-6372.

25V365000 · Exterior Lighting:headlights

Jun 11, 2025

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023 GLC 300 and GLC 300 4MATIC vehicles. The headlights are missing adjustment prevention caps, which can allow the headlights to be improperly adjusted. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."

Consequence & remedy

Consequence: Improperly adjusted headlights can reduce visibility, increasing the risk of a crash.

Remedy: Dealers will inspect the headlights for sealing caps and install caps as necessary, free of charge. Owner notification letters were mailed July 18, 2025. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2025060005.

25V379000 · Structure:body:roof And Pillars

Jun 6, 2025

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2025 GLC 300, GLC 300 4MATIC, 2024-2025 AMG GLC 43 4MATIC, 2025 GLC 350E 4MATIC, and AMG GLC 63 S E vehicles equipped with a panoramic sunroof. In certain crash scenarios, where the rear occupant's head contacts the C-pillar, the pillar may not absorb an adequate amount of the impact. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 201, "Occupant Protection in Interior Impact."

Consequence & remedy

Consequence: In the event of a crash, insufficient impact protection can increase the risk of injury.

Remedy: Dealers will modify the roof lining and C-pillar trim, free of charge. Owner notification letters were mailed July 9, 2025. Owners may contact MBUSA customer service at 1-800-367-6372.

25V255000 · Electrical System:wiring:fuses And Circuit Breakers

May 12, 2025

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2024 C-Class, E-Class, S-Class, SL, GLC, EQE SUV, EQE, EQS SUV, and EQS vehicles that were incorrectly repaired under recall 24V-115. An incorrect fuse box that was not designed for the vehicle may have been installed.

Consequence & remedy

Consequence: An incorrect fuse box can result in a sudden loss of drive power or a loss of critical safety functions such as the restraint systems or instrument cluster, increasing the risk of a crash or injury. Additionally, there could be an increased risk of a fire.

Remedy: Dealers will inspect and replace the main fuse boxes, free of charge. Owner notification letters were mailed June 6, 2025. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2025050003/4.

24V808000 · Seats:critical Fasteners

Oct 25, 2024

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023 GLC 300 and GLC 300 4MATIC vehicles. The driver's and front passenger seat rail may have been incorrectly attached to the vehicle body.

Consequence & remedy

Consequence: An incorrectly attached seat may not properly restrain the driver during a crash, increasing the risk of injury.

Remedy: Dealers will inspect the bolt connection and tighten the bolts between the driver and front passenger seat rail and the vehicle body, free of charge. Owner notification letters were mailed December 4, 2024. Owners may contact MBUSA customer service at 1-800-367-6372.

24V520000 · Structure:interior Panels:dashboard

Jul 8, 2024

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023 GLC 300 4MATIC vehicles. Certain dashboard area bolts may have been insufficiently tightened, potentially causing improper air bag deployment or parts separation during a crash. In addition, the 12-Volt electric auxiliary heater connections may be loose, possibly causing the electrical wiring to overheat.

Consequence & remedy

Consequence: An improper air bag deployment increases the risk of injury in a crash. Overheated wiring can increase the risk of a fire.

Remedy: Dealers will inspect and tighten the bolts as necessary, free of charge. Owner notification letters were August 23, 2024. Owner may contact MBUSA customer service at 1-877-496-3691.

24V115000 · Electrical System:wiring:fuses And Circuit Breakers

Feb 16, 2024

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2024 C300, AMG C43, S580e, S580, Maybach S580, Maybach S680, AMG SL43, AMGSL63, GLC300, EQE350, EQE500, EQS450, EQS580, AMG EQS, 2023 S500, AMG SL55, AMG EQE, 2024 E350, E450, AMG C63e S, CLE300 Coupe, CLE450 Coupe, and GLC300 Coupe vehicles. The 80-Amp fuses may have been manufactured incorrectly, which can cause the fuses to fail.

Consequence & remedy

Consequence: An 80-Amp fuse that fails can result in a sudden loss of drive power or a loss of critical safety functions such as the restraint systems or instrument cluster, increasing the risk of a crash or injury. Additionally, there could be an increased risk of a fire.

Remedy: Dealers will replace the main fuse boxes, free of charge. Owner notification letters were mailed April 5, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2024030008.

23V878000 · Engine And Engine Cooling:critical Fasteners; Fuel System, Gasoline:delivery:fuel Pump

Dec 21, 2023

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023 GLC300, 2024 GLE350, and GLE450 vehicles equipped with an M254 engine. The incorrect screws, installed on the high-pressure fuel pump, may prevent a proper seal from forming between the high-pressure fuel pump and the tandem oil pump.

Consequence & remedy

Consequence: An inadequate seal can allow fuel and oil to leak onto the road, creating a hazard for other road users and increasing the risk of a crash. Additionally, a fuel and oil leak in the presence of hot engine components can increase the risk of a fire.

Remedy: Dealers will replace the high-pressure fuel pump, free of charge. Owner notification letters were mailed February 9, 2024. Owners may contact MBUSA customer service at 1-800-367-6372.

Additional source detail variants (2)

Engine And Engine Cooling:critical Fasteners

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023 GLC300, 2024 GLE350, and GLE450 vehicles equipped with an M254 engine. The incorrect screws, installed on the high-pressure fuel pump, may prevent a proper seal from forming between the high-pressure fuel pump and the tandem oil pump.

Consequence: An inadequate seal can allow fuel and oil to leak onto the road, creating a hazard for other road users and increasing the risk of a crash. Additionally, a fuel and oil leak in the presence of hot engine components can increase the risk of a fire.

Remedy: Dealers will replace the high-pressure fuel pump, free of charge. Owner notification letters were mailed February 9, 2024. Owners may contact MBUSA customer service at 1-800-367-6372.

Fuel System, Gasoline:delivery:fuel Pump

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023 GLC300, 2024 GLE350, and GLE450 vehicles equipped with an M254 engine. The incorrect screws, installed on the high-pressure fuel pump, may prevent a proper seal from forming between the high-pressure fuel pump and the tandem oil pump.

Consequence: An inadequate seal can allow fuel and oil to leak onto the road, creating a hazard for other road users and increasing the risk of a crash. Additionally, a fuel and oil leak in the presence of hot engine components can increase the risk of a fire.

Remedy: Dealers will replace the high-pressure fuel pump, free of charge. Owner notification letters were mailed February 9, 2024. Owners may contact MBUSA customer service at 1-800-367-6372.

23V880000 · Fuel System, Gasoline:delivery:fuel Pump

Dec 21, 2023

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2024 GLE, GLS, C-Class, E-Class, S-Class, SL, GLC, CLS, AMG GT, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, causing a loss of drive power.

Consequence & remedy

Consequence: A loss of drive power can increase the risk of a crash.

Remedy: Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed on June 28, 2024. Owner notification letters will be mailed in phases, on February 23, 2024, April 19, 2024, June 28, 2024, August 9, 2024, October 1, 2024, and December 2, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. This recall is an expansion of NHTSA recall number 23V-445.

23V629000 · Trailer Hitches

Sep 11, 2023

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023 GLC300 vehicles. The front tow eye may be inadequately threaded to the crossmember and can detach during towing.

Consequence & remedy

Consequence: A detached tow eye can separate the vehicle from the tow truck, increasing the risk of a crash or injury.

Remedy: Dealers will inspect and replace the front crossmember, as necessary, free of charge. Owner notification letters were mailed January 26, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers for this recall are 2023090010/120002.

23V445000 · Fuel System, Gasoline:delivery:fuel Pump

Jun 26, 2023

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2023 C-Class, E-Class, S-Class, CLS, SL, GT, GLC, GLE, GLS, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, which can result in a loss of drive power.

Consequence & remedy

Consequence: A loss of drive power can increase the risk of a crash.

Remedy: Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed on June 14, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2023070012.

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

1

DP23003 · Malfunction Indicator Light / No-Start

Opened Jul 25, 2023 · Closed May 20, 2024

Status: closed (inferred from source dates) · Power Train

In a letter dated July 2, 2023, Aldelberto A. Cordova (the petitioner) submitted a petition requesting that NHTSA initiate an investigation of an alleged defect within the “ISG 48-volt on-board electrical system,” which resulted in warning light illumination as well as an inability to start the vehicle in a 2023 Mercedes-Benz GLC300. ODI reviewed the petition, complaint data in NHTSA's databases and information gathered from an Information Request (IR) letter sent to Mercedes-Benz. Examination of this information indicates that the subject component listed in the petition is not capable of causing the a loss of motive power. The alleged defect cited in the petition was caused by a software deviation in the Central Powertrain Controller (CPC), which is a separate system and independent of the 48-volt system. After thoroughly assessing the material submitted by the petitioner, information in NHTSA's possession, information submitted by Mercedes-Benz, NHTSA does not find that a formal investigation is warranted.  Accordingly, the Agency is denying the petition. As with all potential motor vehicle safety risks, NHTSA will continue to review any new information or incidents as they are submitted to the Agency. A Federal Register Notice (FRN) further detailing NHTSA's reasons for denial of the petition will be published in the future. The petition and its attachments can be reviewed at NHTSA.gov under reference ODI number 11533472.