2003 Mitsubishi Montero Sport problems & reliability
31 owner complaints filed with NHTSA for the 2003 Mitsubishi Montero Sport. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
4 complaints report injuries (4 injured, 1 deaths reported).
Federal crash records (FARS 2020–2023): 2003 Mitsubishi Montero Sport vehicles were involved in 13 fatal crashes with 10 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Air Bags | 5 | 16% |
| Electrical System | 5 | 16% |
| Engine | 5 | 16% |
| Power Train | 5 | 16% |
| Engine and Engine Cooling | 4 | 13% |
| Fuel/propulsion System | 3 | 10% |
| Suspension | 3 | 10% |
| Vehicle Speed Control | 3 | 10% |
| Service Brakes | 2 | 6% |
| Service Brakes, Hydraulic | 2 | 6% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 66,280 miles (middle 50% between 36,000 and 124,000 miles), based on 21 complaints that included mileage.
Complaints by incident year
What owners report
“Plug wires seem to have continual manufacturers mistakes, the oil is forced to direct a path to the plugs caused to misfire”
Fuel/propulsion System · filed Jun 9, 2017
“"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”
Engine · filed Jun 1, 2017
“Tl* the contact owns a 2003 mitsubishi montero sport. While parked, there was a strong fuel odor coming from the vehicle. In addition, fuel was leaking from the rear of the vehicle. The vehicle was not diagnosed or repaired. The vin was not included in nhtsa campaign number: 04v319000 (fuel system, propulsion system)…”
Fuel/propulsion System · filed Jul 8, 2015
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
38 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2003 Mitsubishi Montero Sport. The 10 most recent:
This is a Dealer Letter sent to dealers informing that Mitsubishi Technical Training has launched the 3rd quarterly technician quiz for 2023.
DEALER LETTER · Service Bulletin/Repair Instructions · issued Jul 21, 2023
This Technical Service Bulletin provides instructions and material safety data sheets for removal of rap-film adhesive residue.
TSB-23-00-004 · Service Bulletin/Repair Instructions · issued Apr 24, 2023
This Technical Service Bulletin reviews the regulations that require a label showing the reduction in load carrying capacity be affixed to vehicles when the total net weight of accessories is more than 1.5 percent of…
TSB-23-00-001 · Service Bulletin/Repair Instructions · issued Apr 24, 2023
This is a Dealer Letter sent to dealers informing that Mitsubishi Technical Training has launched the 2nd quarterly technician quiz for 2023.
DEALER LETTER · Service Bulletin/Repair Instructions · issued Apr 21, 2023
This Technical Service Bulletin was sent to dealers to explain the difference between normal dew condensation, which is a natural phenomenon, and water penetration caused by improper sealing or a defective/broken part.
TSB-22-54-003 · Service Bulletin/Repair Instructions · issued Apr 7, 2022
This is a service newsletter (Tech Talk) that was sent out to dealers.
TT253 · Service Bulletin/Repair Instructions · issued Nov 26, 2019
This is a Technical Service Bulletin sent to dealers. This bulletin supersedes TSB-18-00-003, issued April, 2018, to add updated information for Carrying Capacity Reduced Label.
TSB-19-00-008 · Service Bulletin/Repair Instructions · issued Jul 30, 2019
This is a message sent to dealers, to inform them that an update for MEDIC will be available.
MEDICUpdate517 · Service Bulletin/Repair Instructions · issued Feb 27, 2018
This is a service newsletter (Tech Talk) that was sent out to dealers.
TT237 · Service Bulletin/Repair Instructions · issued Feb 26, 2018
This is a service newsletter (Tech Talk) that was sent out to dealers.
TT218 · Service Bulletin/Repair Instructions · issued Aug 28, 2015
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
No NHTSA recall campaigns name the 2003 Mitsubishi Montero Sport in our current data. Recalls may apply only to certain VIN ranges — always confirm with a VIN check.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2003 Mitsubishi Montero Sport?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 66,280 miles — budget accordingly if the car is approaching that mileage.