IsItAGoodCar
Reliability Guide

Common Problems with the
2021 Mitsubishi Outlander PHEV (GG)

The final year the Outlander PHEV was sold in the UK before Mitsubishi's withdrawal. These late models represent a highly refined, practical, and proven plug-in hybrid option.

What changed for 2021

  • •Final production year for the UK market.
  • •Availability of high-specification 'Dynamic' and 'Exceed' trims.

Common MOT watch-outs

  • !General wear and tear; the powertrain is generally very robust.
  • !Minor interior trim rattles.
1
Known Issues
1
Serious
0
Moderate
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Minor

All Known Issues

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.

Est. Repair Cost: £1,000–£3,000
Warning Signs:

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

What to Inspect:
  • Verify that any AC service used POE oil specifically
  • Check AC operation in both EV and Petrol modes
Verified by IsItAGoodCar Research Team

Buying Tips for 2021 Mitsubishi Outlander PHEV (GG)

  • Verify all 'Over The Air' or dealer software updates have been applied to ensure optimal battery management.
  • Despite Mitsubishi's withdrawal, aftersales support remains strong through the established dealer network.
2020
Check a 2021 Mitsubishi Outlander PHEV (GG) by Registration