Service brakes
VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES EQUIPPED WITH 3.5L ENGINES. THESE VEHICLES DO NOT COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 106, "BRAKE HOSES." THESE VEHICLES ARE EQUIPPED WITH NONCOMPLIANT BRAKE VACUUM HOSES.
NHTSA lists 3 safety recalls and 33 owner complaints for the 1999 Mitsubishi Montero Sport. Most complaints involve engine and engine cooling (5) and power train (5). The EPA rates it 16–20 mpg combined.
VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES EQUIPPED WITH 3.5L ENGINES. THESE VEHICLES DO NOT COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 106, "BRAKE HOSES." THESE VEHICLES ARE EQUIPPED WITH NONCOMPLIANT BRAKE VACUUM HOSES.
VEHICLE DESCRIPTION: PASSENGER VEHICLES: MIRAGE MODEL VEHICLES EQUIPPED WITH 1.5L ENGINES; MONTERO SPORT MODELS EQUIPPED WITH 3.0L ENGINES; AND MONTERO MODELS EQUIPPED WITH 3.0L ENGINES. THE BOLT SECURING THE CRANKSHAFT PULLEY CAN BECOME LOOSE AND THE PULLEY COULD FALL OFF THE VEHICLE.
VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES EQUIPPED WITH 4-WHEEL DRIVE AND AUTOMATIC TRANSMISSIONS. AUTOMATIC TRANSMISSION FLUID COULD BE VENTED ONTO THE HOT EXHAUST SYSTEM AS A RESULT OF UNANTICIPATED HEAT GENERATION IN THE TRANSMISSION.
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
“ON SAT. 2/6/2010 WHILE DRIVING, I EXPERIENCED LOSS OF STEERING WHICH SCARED ME FOR A MOMENT. AFTER PULLING OVER, I INVESTIGATED WHAT CAUSED THE PROBLEM, AND FOUND THAT MY HARMONIC BALANCER HAD COME LOOSE. I GOT MY VEHICLE BACK TO THE HOUSE, AND PARKED IT. *TR”
“TRANSMISSION WARNING LIGHT CAME ON TO INDICATE OVERHEAT OR POSSIBLE TRANSMISSION FAILURE. I HAD TO PULL OFF THE HIGHWAY TO THE BREAKDOWN LANE (SAFETY CONCERN) TO ALLOW TRANS TO COOL DOWN. I NOW DISCOVER MITSUBISHI HAS A TECH SERVICE BULLETIN (TSB) ON THIS ISSUE FOR MY VEHICLE, REQUIRING INSTALLATION OF A LARGER CAPACITY TRANSMISSION PAN, FILTER AND SCREEN, AND A LONGER FILL TUBE AND MEASURING WAND. *TR”
“THE AIR CONDITIONING DISPELLS AN ODOR SIMILAR TO URINE WHEN TURNED ON. THE FRONT END OF THE TRUCK SHAKES BADLY WHEN THE BRAKES ARE APPLIED AT 50 MPH OR GREATER. BOTH OF THESE PROBLEMS CONTINUE EVEN AFTER THE REPAIR WORK. THE A/C PROBLEM HAS NEVER GONE AWAY . ALL THE DEALERSHIP DOES IS APPLY A DEODERANT BUT IT DOES NOT HELP. THE ROTORS HAVE ALREADY BEEN CHANGED ONCE AND THE BRAKES WERE ALSO CHANGED. THE TIRES WERE EVEN ROTATED BUT THE VIBRATING CONTINUES.*AK”
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| Montero Sport 2WD Man 5-spd, 4 cyl, 2.4 L · Rear-Wheel Drive | 19 | 22 | 20 | $3,000 | 444 |
| Montero Sport 2WD Auto 4-spd, 6 cyl, 3.0 L · Rear-Wheel Drive | 16 | 20 | 18 | $3,350 | 494 |
| Montero Sport 2WD Auto 4-spd, 6 cyl, 3.5 L · Rear-Wheel Drive | 15 | 19 | 17 | $3,550 | 523 |
| Montero Sport 4WD Auto 4-spd, 6 cyl, 3.0 L · 4-Wheel or All-Wheel Drive | 16 | 19 | 17 | $3,550 | 523 |
| Montero Sport 4WD Man 5-spd, 6 cyl, 3.0 L · 4-Wheel or All-Wheel Drive | 15 | 19 | 17 | $3,550 | 523 |
| Montero Sport 4WD Auto 4-spd, 6 cyl, 3.5 L · 4-Wheel or All-Wheel Drive | 15 | 18 | 16 | $3,750 | 555 |
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
3 safety recalls as of Nov 13, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
Owners filed 33 complaints with NHTSA. The most-cited components are engine and engine cooling (5), power train (5), service brakes, hydraulic (5). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 1999 Mitsubishi Montero Sport at 16–20 mpg combined, depending on engine and drivetrain (6 versions rated).