2018 Mitsubishi Outlander Sport Problems & Issues
2018 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated October 2026
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2018 Mitsubishi Outlander Sport has 6 documented known issues, with 4 rated critical. The most serious are CVT shudder, slipping, and premature failure ($3,000-$5,000 repair), FCM-ECU Software Defect Causes Extended Automatic Braking (Recall 18V620000), Forward Collision Mitigation Recall: Incorrect Brake Hydraulic Unit ECU Software (Recall 18V621) and Underbody and Subframe Rust/Corrosion ($200-$3,000 repair). Across all issues with published estimates, repair costs range from $200 to $5,000. DIY maintenance guides at au7o.io.
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All 6 Known Issues
NHTSA Recalls1 recall
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE
Mitsubishi Motors North America, Inc. (MMNA) is recalling certain 2019-2022 Outlander Sport vehicles equipped with continuously variable transmissions and mechanical key ignition systems. A software error in the transmission control unit (CVT-ECU) may incorrectly reduce the transmission gear ratio at high speeds, which can result in an engine stall.
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Frequently Asked Questions
What are the most common Mitsubishi Outlander Sport problems?
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2018 Mitsubishi Outlander Sport has 6 documented issues. The most frequently reported are: CVT shudder, slipping, and premature failure, FCM-ECU Software Defect Causes Extended Automatic Braking (Recall 18V620000), Forward Collision Mitigation Recall: Incorrect Brake Hydraulic Unit ECU Software (Recall 18V621). Of these, 4 are rated critical and should be addressed promptly.
Is the Mitsubishi Outlander Sport reliable?
The 2018 Mitsubishi Outlander Sport has 6 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 4 issues are rated critical: CVT shudder, slipping, and premature failure and FCM-ECU Software Defect Causes Extended Automatic Braking (Recall 18V620000) and Forward Collision Mitigation Recall: Incorrect Brake Hydraulic Unit ECU Software (Recall 18V621) and Underbody and Subframe Rust/Corrosion. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Mitsubishi Outlander Sport problems?
Repair costs for known Mitsubishi Outlander Sport issues range from $200 to $5,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, CVT shudder, slipping, and premature failure, typically costs $3,000-$5,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2011-2022 Mitsubishi Outlander Sport CVT shudder, slipping, and premature failure?
The Jatco-built CVT used across most Outlander Sport years is prone to shuddering, jerking, hesitation when shifting from park to drive/reverse, whining or whirring noise during acceleration, and slipping (engine revs without proportional acceleration). Degraded CVT fluid and bel… Repairs typically run $3,000-$5,000. Severity: high.
What is the 2018 Mitsubishi Outlander Sport FCM-ECU Software Defect Causes Extended Automatic Braking (Recall 18V620000)?
If your 2018 Outlander Sport is equipped with the Forward Collision Mitigation system that detects pedestrians, it may be covered by NHTSA recall 18V620000. The FCM electronic control unit was programmed with incorrect software that can command braking for longer than needed -- t… Severity: high.
What is the 2018 Mitsubishi Outlander Sport Forward Collision Mitigation Recall: Incorrect Brake Hydraulic Unit ECU Software (Recall 18V621)?
This recall applies specifically to 2018 Outlander Sport vehicles equipped with the Forward Collision Mitigation (FCM) system. On those cars, the software in the Hydraulic Unit Electronic Control Unit — the module that commands the brake hydraulics — may be the wrong version. Wit… Severity: high.
What is the 2011-2020 Mitsubishi Outlander Sport Underbody and Subframe Rust/Corrosion?
The Outlander Sport is susceptible to accelerated underbody rust and corrosion, particularly in salt-belt states. The rear subframe, fuel tank straps, and brake lines are the most affected areas, with rust perforation occurring in as little as 5-7 years. Repairs typically run $200-$3,000. Severity: high.
What is the 2011-2020 Mitsubishi Outlander Sport AC Compressor Premature Failure?
The AC compressor in the Outlander Sport frequently fails between 50,000 and 80,000 miles. The compressor clutch bearing seizes or the internal reed valves break, contaminating the AC system with metal debris. Repairs typically run $600-$1,400. Severity: medium.
What is the 2011-2026 Mitsubishi Outlander Sport CVT Judder and Hesitation?
The Outlander Sport CVT develops a judder during low-speed acceleration and deceleration. The transmission hesitates when pulling away from stops, and the simulated shift points feel rough and inconsistent. Repairs typically run $200-$4,000. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.