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1999 Isuzu Trooper

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 1999 Isuzu Trooper do not stand out strongly from the model-year median of 25.

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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

45 reports with mileage · 36 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.

  • Engine And Engine Cooling. Review the 56 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 8 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Vehicle Speed Control. Review the 7 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

5 crash reports1 fire reports2 injury reports

What owners actually said

81 reports
Mileage unknown · Jun 19, 2007
Engine And Engine Cooling

ENGINE DIES WHILE DRIVING AT VARIOUS SPEEDS. FROM 5 MPH TO 60 MPH. DIES WHILE TURNING, THEN STEERING WHEEL LOCKS UP. ALMOST BEEN IN A FEW ACCIDENTS. HAS HAPPENED SEVERAL TIMES THIS SUMMER. SEEMS TO BE A COMMON PROBLEM. *AK ENGINE ALSO BURNS 1QT OIL EVER 1,000 MILES.

NHTSA ODI #10193684

93,000 miles · Sep 28, 2006
Engine And Engine Cooling

SOMETIME IN FEBRUARY OF THIS YEAR, THE ENGINE FAILED ON OUR 1999 ISUZU TROOPER, POSSIBLY DUE TO LOW OIL. NO WARNING LIGHTS OR SYMPTOMS OF ANY KIND - VEHICLE JUST QUIT ON ROUTE 95 IN MANSFIELD WHILE MY HUSBAND WAS DRIVING HOME FROM BOWLING. CAR WAS TOWED TO LOCAL GARAGE, WHERE THEY CONFIRMED THAT ENGINE NEEDED TO BE REPLACED…

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SOMETIME IN FEBRUARY OF THIS YEAR, THE ENGINE FAILED ON OUR 1999 ISUZU TROOPER, POSSIBLY DUE TO LOW OIL. NO WARNING LIGHTS OR SYMPTOMS OF ANY KIND - VEHICLE JUST QUIT ON ROUTE 95 IN MANSFIELD WHILE MY HUSBAND WAS DRIVING HOME FROM BOWLING. CAR WAS TOWED TO LOCAL GARAGE, WHERE THEY CONFIRMED THAT ENGINE NEEDED TO BE REPLACED - IN FACT, THE TOW TRUCK DRIVER HAD LITERALLY PICKED PIECES UP FROM THE PAVEMENT UNDERNEATH THE VEHICLE. UPON SEARCHING FOR A NEW ENGINE, WE DISCOVERED THAT THEY WERE NOT EASY TO FIND UNLESS PURCHASED DIRECTLY FROM ISUZU, AND ACCORDING TO CONSUMER AFFAIRS WEBSITE, THIS IS PRIMARILY BECAUSE THIS TYPE OF FAILURE IS COMMON AMONG ISUZUS MANUFACTURED IN LATE 1990'S/EARLY 2000'S. OUR REGULAR MECHANIC, AND SEVERAL OTHERS QUESTIONED, CONFIRMED THAT THE ISUZU'S WERE NOTORIOUS FOR THIS TYPE OF PROBLEM. BOTTOM LINE, IT WOULD COST US $5000-$6000 DOLLARS TO REPLACE THE ENGINE, WHICH IS ABOUT WHAT WE OWED ON THE CAR. *NM

NHTSA ODI #10169521

66,366 miles · Sep 11, 2006
Engine And Engine Cooling

FROM THE TIME I BOUGHT THE VEHICLE WHEN IT WAS ONLY A COUPLE YEARS OLD, EVERY TIME I BROUGHT THE VEHICLE IN FOR AN OIL CHANGE, THEY SAID IT WAS ALMOST EMPTY OF OIL. I BROUGHT IT IN TO A DEALER SEVERAL TIMES SINCE IT WAS UNDER WARRANTY. THEY COULD NEVER FIND THE REASON FOR IT BURNING OIL. EVERY DEALER SAID IT WAS A COMMON IS…

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FROM THE TIME I BOUGHT THE VEHICLE WHEN IT WAS ONLY A COUPLE YEARS OLD, EVERY TIME I BROUGHT THE VEHICLE IN FOR AN OIL CHANGE, THEY SAID IT WAS ALMOST EMPTY OF OIL. I BROUGHT IT IN TO A DEALER SEVERAL TIMES SINCE IT WAS UNDER WARRANTY. THEY COULD NEVER FIND THE REASON FOR IT BURNING OIL. EVERY DEALER SAID IT WAS A COMMON ISSUE WITH THE ISUZU, BUT THEY COULD NOT FIX IT BECAUSE THEY COULD NOT FIND THE PROBLEM. *JB

NHTSA ODI #10167797

55,000 miles · May 2, 2006
Engine And Engine Cooling

EXCESSIVE OIL BURNING. *JB

NHTSA ODI #10156609

52,000 miles · Apr 30, 2006
Engine And Engine Cooling

ENGINE OIL BURNING ISSUE. 1999 ISUZU TROOPER S. AUTOMATIC TRANSMISSION. VEHICLE BURNS OVER 1 QUART OF OIL PER 3K MILES. HAS DONE THE SAME SINCE I BOUGHT THE VEHICLE IN 2003 WITH 52K MILES. NOW HAS 93K MILES. BASED ON ONLINE RESEARCH, THIS IS A DESIGN PROBLEM WITH THE OIL FLOW PORTS WITHIN THE 3.5 LITER V6 AND IS A WIDESPREAD PRO…

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ENGINE OIL BURNING ISSUE. 1999 ISUZU TROOPER S. AUTOMATIC TRANSMISSION. VEHICLE BURNS OVER 1 QUART OF OIL PER 3K MILES. HAS DONE THE SAME SINCE I BOUGHT THE VEHICLE IN 2003 WITH 52K MILES. NOW HAS 93K MILES. BASED ON ONLINE RESEARCH, THIS IS A DESIGN PROBLEM WITH THE OIL FLOW PORTS WITHIN THE 3.5 LITER V6 AND IS A WIDESPREAD PROBLEM. *JB

NHTSA ODI #10156451

83,000 miles · Mar 24, 2006
Engine And Engine Cooling

DT*: THE CONTACT STATED WHILE DRIVING 45MPH, THERE WAS A KNOCKING NOISE WITHIN THE ENGINE COMPARTMENT AREA. THE VEHICLE WAS TAKEN TO AN INDEPENDENT REPAIR SHOP FOR INSPECTION. THE MECHANIC DETERMINED THERE WAS SLUDGE IN THE ENGINE AND THE OIL WAS DRY ALTHOUGH THE VEHICLE RECEIVED REGULAR MAINTENANCE. THE MECHANIC REPLACED TH…

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DT*: THE CONTACT STATED WHILE DRIVING 45MPH, THERE WAS A KNOCKING NOISE WITHIN THE ENGINE COMPARTMENT AREA. THE VEHICLE WAS TAKEN TO AN INDEPENDENT REPAIR SHOP FOR INSPECTION. THE MECHANIC DETERMINED THERE WAS SLUDGE IN THE ENGINE AND THE OIL WAS DRY ALTHOUGH THE VEHICLE RECEIVED REGULAR MAINTENANCE. THE MECHANIC REPLACED THE ENGINE.

NHTSA ODI #10153640

Mileage unknown · Feb 19, 2006
Engine And Engine Cooling

MY 1999 ISUZU TROOPER ENGINE SEIZED UP. NO WARNING LIGHT OR ANY INDICATIONS THAT ANY THING WAS WRONG. TOWED IT TO A MECHANIC AND THEY SAID IT HAD NO OIL IN IT. I HAD JUST PURCHASED THE VEHICLE 1 MONTH EARLIER AND HAD THE OIL CHANGED/FILLED IMMEDIATELY AFTER THE PURCHASE. I HAD DRIVEN IT LESS THAN 2000 MILES. I NOW SEE THIS PR…

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MY 1999 ISUZU TROOPER ENGINE SEIZED UP. NO WARNING LIGHT OR ANY INDICATIONS THAT ANY THING WAS WRONG. TOWED IT TO A MECHANIC AND THEY SAID IT HAD NO OIL IN IT. I HAD JUST PURCHASED THE VEHICLE 1 MONTH EARLIER AND HAD THE OIL CHANGED/FILLED IMMEDIATELY AFTER THE PURCHASE. I HAD DRIVEN IT LESS THAN 2000 MILES. I NOW SEE THIS PROBLEM HAS BEEN WELL DOCUMENTED ON THE INTERNET. NOW I AM HAVING TO REPLACE AN ENGINE WHICH COULD BE MORE THAN THE COST OF THE VEHICLE BECAUSE THE MANUFACTURERS OIL CONSUMPTION DEFECT AND LACK OF LOW OIL GAUGE/WARNING. *NM

NHTSA ODI #10150634

Mileage unknown · Feb 15, 2006
Engine And Engine Cooling

I PURCHASED A NEW TROOPER IN 1999 AND DID EVERY REQUIRED MAINTENANCE ON TIME AT A AUTHORIZE ISUZU DEALER. AFTER THE 5 YEAR 60,000 MILE WARRANTY WAS UP WE STARTED TAKING IT TO A REPUTABLE NATIONAL OIL CHANGE COMPANY. WE NEVER HAD ANY INDICATION IT WAS USING OIL AT AN ABNORMAL RATE. IT WAS NOT LEAKING OIL, IT WAS NOT BURNING OIL A…

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I PURCHASED A NEW TROOPER IN 1999 AND DID EVERY REQUIRED MAINTENANCE ON TIME AT A AUTHORIZE ISUZU DEALER. AFTER THE 5 YEAR 60,000 MILE WARRANTY WAS UP WE STARTED TAKING IT TO A REPUTABLE NATIONAL OIL CHANGE COMPANY. WE NEVER HAD ANY INDICATION IT WAS USING OIL AT AN ABNORMAL RATE. IT WAS NOT LEAKING OIL, IT WAS NOT BURNING OIL AND THE OIL LIGHT WAS NOT COMING ON. ONE DAY THE OIL LIGHT CAME ON AND MY WIFE IMMEDIATELY PULLED OVER AND WE ADDED OIL. IT WOULD RUN ROUGH AND TOOK IT TO A MECHANIC WHO DID SOME MAINTENANCE WORK. I HAD NOT TOTALLY WRECKED THE ENGINE. I GOT IT DRIVING GOOD FOR ABOUT $2,000 AND HOPED THIS HAD FIXED THE PROBLEM. WE ADDED AND CHECK THE OIL EVERY 500 MILES. TWO MONTHS LATER THE ENGINE SEIZED AND I AM NOW TOLD I NEED A NEW ENGINE. AFTER SEARCHING THE INTERNET I HAVE FOUND MANY OTHERS HAVE HAD THIS ENGINE OIL PROBLEM. ESTIMATED COSTS TO REPLACE THE ENGINE ARE $4K-$6K WHICH IS ABOUT BLUE BOOK FOR THE TROOPER AND NOW I WOULD HAVE NO CONFIDENCE IN PUTTING A 1999 ENGINE WITH KNOWN PROBLEMS IN AS A REPLACEMENT. *JB

NHTSA ODI #10150333

79,000 miles · Jan 20, 2006
Power Train

WHILE DRIVING SOUTH ON US INTERSTATE 89 NEAR MONTPELIER, VT, PULLED OVER TO ADJUST STUCK WINDSHIELD WIPER (DUE TO SNOW). AFTER EXITING HIGHWAY VIA EXIT RAMP AND PARKING IN A PARKING LOT, RETURNED TOWARDS HIGHWAY AFTER ABOUT A 5 MINUTE DELAY. AS WAS ACCELERATING UP THE ON RAMP, TRANSMISSION "LET GO" AND ENGINE REVVED. TRANSMIS…

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WHILE DRIVING SOUTH ON US INTERSTATE 89 NEAR MONTPELIER, VT, PULLED OVER TO ADJUST STUCK WINDSHIELD WIPER (DUE TO SNOW). AFTER EXITING HIGHWAY VIA EXIT RAMP AND PARKING IN A PARKING LOT, RETURNED TOWARDS HIGHWAY AFTER ABOUT A 5 MINUTE DELAY. AS WAS ACCELERATING UP THE ON RAMP, TRANSMISSION "LET GO" AND ENGINE REVVED. TRANSMISSION WOULD NO LONGER SHIFT AND REMAINED STUCK IN 2ND GEAR. LIMPED TO NEAREST SERVICE STATION. VEHICLE WAS TOWED TO ISUZU DEALERSHIP WHERE METAL WAS FOUND IN THE TRANNY PAN UPON INSPECTION INDICATING TRANSMISSION FAILURE. VEHICLE HAD 79K MILES, WAS SERVICED AT 60K AS PER MANUFACTURER'S RECOMMENDATIONS, NO OTHER DRIVETRAIN PROBLEMS OR INDICATION OF IMMINENT FAILURE BEFORE INCIDENT. TRANSMISSION (4L30E) HAD TO BE REPLACED WITH NEW TRANSMISSION. *JB

NHTSA ODI #10148184

Mileage unknown · Dec 19, 2005
Engine And Engine Cooling

BURNING TOO MUCH OIL WITH ABSOLUTELY NO WARNING. MY CHECK OIL LIGHT HAS NEVER COME ON. HAVE TAKEN IT FOR 3,000 MILE OIL CHANGES A COUPLE TIMES TO FIND NO OIL AND NO TRACE OF OIL IN IT, THOUGH I HAD FILLED IT TO WHERE THE DIPSTICK REGISTERED FULL WITHIN THE LAST SEVENTY MILES. I CAN'T MAKE A DECENT STAB AT ESTIMATING HOW MUCH IT…

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BURNING TOO MUCH OIL WITH ABSOLUTELY NO WARNING. MY CHECK OIL LIGHT HAS NEVER COME ON. HAVE TAKEN IT FOR 3,000 MILE OIL CHANGES A COUPLE TIMES TO FIND NO OIL AND NO TRACE OF OIL IN IT, THOUGH I HAD FILLED IT TO WHERE THE DIPSTICK REGISTERED FULL WITHIN THE LAST SEVENTY MILES. I CAN'T MAKE A DECENT STAB AT ESTIMATING HOW MUCH IT BURNS BECAUSE IT SEEMS TO BE FINE AND THEN BE EMPTY. IT DOESN'T LEAK ANYWHERE AND IT DOESN'T SMELL LIKE IT'S BURNING IT, BUT IT'S JUST GONE. I HAVE TO STAY ON TOP OF THIS ALL OF THE TIME; IT'S A DRAG. I'M GOING TO GO CHECK IT NOW WHILE I'M THINKING ABOUT IT. I AM WONDERING IF WHATEVER THIS DEFECT IS AFFECTING MY MILEAGE BECAUSE I ONLY GET 16 MPG. MY MECHANICS SAY THE ONLY THING I CAN DO IS GET THE ENGINE REBUILT. I DO WISH ISUZU WOULD HELP OUT HERE. I LIKE THE VEHICLE AND AM NOT IN A POSITION TO HAVE THE ENGINE REBUILT OR BUY ANOTHER CAR. I WOULD ALSO FEEL BADLY SELLING THIS TO SOMEONE KNOWING THE ENGINE COULD LOCK-UP WITH NO NOTICE. AND IF I TELL THEM, WHO WOULD BUY IT? *NM

NHTSA ODI #10145587

Official recalls

0

No recalls in this snapshot.

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

0

No exact-year investigations in this snapshot.