IsItAGoodCar

Common Problems with the
2014–2018 Mitsubishi Outlander PHEV (GG)

We've identified 4 known issues that can affect the 2014–2018 Mitsubishi Outlander PHEV (GG). 2 of these are serious faults that could be expensive to repair.

4
Known Issues
2
Serious
1
Moderate
1
Minor

The 2014–2018 period has 3 more issues than the Mitsubishi Outlander PHEV (GG) average across all year periods.

All Known Issues

Battery Degradation & "BMU Reset" Masking

SeriousEngine

The traction battery naturally loses capacity over time. A major concern is the "BMU Reset" where a technician or seller resets the Battery Management Unit, forcing it to report 100% health (State of Health). This "masks" the actual degradation until the car relearns the true capacity over several weeks.

Most affected: All PHEV models

Estimated cost: £3,000–£7,000 (Replacement)Affects: 2014–2018Often appears around: 60,000+ miles

Typical symptoms

  • •Suddenly dropping range after a few weeks of ownership
  • •Inconsistent EV range
  • •Petrol engine starting even when battery shows charge

What to inspect before you buy

  • ✓Use "PHEV Watchdog" and an OBDII dongle to check actual State of Health (SoH)
  • ✓Check for a suspiciously high health percentage on high-mileage cars
  • ✓Ask for a history of any BMU resets

AC Compressor Failure (Wrong Oil)

SeriousElectrics & Electronics

The electric compressor requires specialized POE oil. Using standard PAG oil during a regas will destroy the internal motor.

Estimated cost: £1,000–£3,000Affects: 2014–2021

Typical symptoms

  • •AC not cooling
  • •Loud grinding noise when AC is on
  • •EV system fault light

What to inspect before you buy

  • ✓Verify that any AC service used POE oil specifically
  • ✓Check AC operation in both EV and Petrol modes

Electric Heater Failure

ModerateInterior & Trim

The electric water heater (used when the engine is off) frequently fails. A small inline gauze filter can also block, preventing circulation.

Estimated cost: £300–£1,000Affects: 2014–2018

Typical symptoms

  • •No cabin heat when driving in EV mode
  • •Heat only available when petrol engine is running

What to inspect before you buy

  • ✓Test the heater while the car is in EV mode and parked

Rear Differential Mount Thud

MinorSuspension & Chassis

The rubber in the rear differential center mount perishes, leading to a "thud" or "clonk" when pulling away.

Estimated cost: £150–£300Affects: 2014–2019

Typical symptoms

  • •Thud from the rear when moving from a standstill
  • •Clunk when releasing the brake

What to inspect before you buy

  • ✓Inspect the rear diff mount bushing for cracks or play

Buying Tips for the 2014 Mitsubishi Outlander PHEV (GG)

  • ✓Check for the "BMU (Battery Management Unit) Reset" scam, where sellers reset the battery health to show 100% capacity temporarily. A real test drive starting with a full battery is essential.
  • ✓Listen for a clicking noise from the rear motor on early models, which could indicate a mounting issue.
  • ✓Verify the operation of the rapid charging port (CHAdeMO) if you plan on using public chargers.
  • ✓Check the electric heater operation in EV mode; it's a common failure point that is expensive to fix.
2019 Mitsubishi Outlander PHEV (GG)

Browse 2014–2018 Mitsubishi Outlander PHEV (GG) in our Directory

View MOT history, registration data, and reliability scores for 2014–2018 Mitsubishi Outlander PHEV (GG) vehicles.

View 2014–2018 Directory

Other Mitsubishi Outlander PHEV (GG) Year Periods

2014–201820192020–2021

Looking at a specific 2014 Mitsubishi Outlander PHEV (GG)?

Enter the registration number to check its full MOT history, outstanding finance, write-off status, and more.

Free Vehicle Check