2003 Mitsubishi Montero Sport Engine Problems
- Complaints
- 5about this part
- Share
- 16%of 31 total for the year
- Median mileage
- 124,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the engine of the 2003 Mitsubishi Montero Sport, 16% of the 31 complaints for this model year. Where a mileage was given, the median is 124,000 miles. 1 of these say a crash was involved, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I was pulling in a sheets station and going into a parking space when my accelerator pedal stuck to the floor and when I left go the brake pedal vehicle kept moving and crashed into a red post which stopped the vehicle then I noticed the gas pedal coming back up and was able to ,put in reverse and cruise back in same parking space did damage to motor and radiator and front body my wife claims this has done it to her as well. I was scared.”
NHTSA complaint #10554835, filed 2013-12, 124,000 miles“I just picked up my son's vehicle from the service garage where I had just had new brakes and rotors installed for him. I was on the way to meet my husband at the grocery store but needed to drop off some letters at the outdoor mail box at the post office which was < 1/4 mile from the service garage. As I pulled up to the post office drop box, I had my foot on the brake and was going just a few miles an hour. All of a sudden the engine revved loudly and the vehicle lurched forward. I pushed harder on the brake but it wouldn't stop! …”
NHTSA complaint #10473099, filed 2012-08, 117,329 miles“Takata recall when a oil leek accor in due time it automatically drips directly on one of the spark plugs.also the emissions control system doesn't function a reading electronic diagnostic when finding issue”
NHTSA complaint #10992777, filed 2017-06, 100 miles“Pin in the harmonic balancer broke causing vehicle to sling A/C belt and drive belt causing harmonic balancer to seize up. Pin was replaced. Months later the check engine light began to come on showing a code of misfire. As well as harmonic balancer coming loose...**5/5/15**..... Belts come off on high way doing about 70 MPH. Harmonic balancer loose again. Crank bolt stuck and un removable.belts came off and got caught in fan...updated 07/30/15 updated 9/29/2015”
NHTSA complaint #10725193, filed 2015-06, 170,161 miles“The contact owns a 2003 Mitsubishi Montero Sport. The contact stated that while driving various speeds, the engine made a knocking sound. The vehicle was not diagnosed or repaired. The failure mileage was 150,000.”
NHTSA complaint #10585857, filed 2014-05, 150,000 milesEngine: other model years
Other parts of the 2003 Mitsubishi Montero Sport
5 complaintsElectrical system
5 complaintsTransmission and drivetrain
5 complaintsBrakes
4 complaintsEngine cooling
4 complaintsFuel system
4 complaintsSuspension
3 complaintsVehicle speed control
3 complaintsSeat belts
1 complaintsSteering
1 complaintsBody and structure
1 complaintsWheels
1 complaints
← All problems reported for the 2003 Mitsubishi Montero Sport
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology