Reliability Guide

Common Problems with the
2015 Subaru Outback Mk5 (BS)

The launch year for the BS Outback. Early models introduced the new styling and EyeSight system, but the CVT and diesel issues from previous generations carried over.

What changed for 2015

  • Launch of the BS Outback with more upmarket styling
  • Introduction of EyeSight driver assist
  • Retained boxer diesel engine option

Common MOT watch-outs

  • !CVT valve body failure causing jerky progress
  • !Diesel DPF and EGR blockage
  • !Front control arm bushing wear
3
Known Issues
1
Serious
2
Moderate
0
Minor

All Known Issues

Lineartronic CVT Valve Body / Solenoid Failure

SeriousGearbox & Transmission

The BS Outback can develop internal valve body solenoid faults, causing jerky progress, warning lights and expensive dealer recommendations for full transmission replacement.

Est. Repair Cost: £800–£1,800

Front Control Arm Bushing Wear

ModerateSuspension & Chassis

Heavy BS Outbacks chew through the front lower arm bushes, which can make the steering feel loose and lead to repeated tyre wear problems.

Est. Repair Cost: £250–£550

DPF and EGR Blockage

ModerateExhaust & Emissions

Late diesel BS cars often respond badly to repeated short journeys, leading to blocked DPFs, EGR trouble and recurring limp-mode complaints.

Est. Repair Cost: £300–£1,500

Buying Tips for 2015 Subaru Outback Mk5 (BS)

  • Drive in slow traffic and on hill starts to test CVT
  • Check the diesel for evidence of long-distance running
  • Inspect the front suspension for bushing wear