IsItAGoodCar

Common Problems with the
2015–2018 Subaru Outback Mk5 (BS)

We've identified 3 known issues that can affect the 2015–2018 Subaru Outback Mk5 (BS). 1 of these are serious faults that could be expensive to repair.

3
Known Issues
1
Serious
2
Moderate
0
Minor

The 2015–2018 period has 1 more issue than the Subaru Outback Mk5 (BS) average across all year periods.

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.

Estimated cost: £800–£1,800Affects: 2015–2020Often appears around: 70,000–100,000 miles

Typical symptoms

  • •Flashing transmission warnings
  • •Jerky engagement
  • •Hesitation from standstill

What to inspect before you buy

  • ✓Drive in slow traffic and on a hill start
  • ✓Check all warning lights cycle properly
  • ✓Ask for invoices showing fluid changes or valve body repair

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.

Estimated cost: £250–£550Affects: 2015–2020Often appears around: 50,000+ miles

Typical symptoms

  • •Loose steering feel
  • •Knocking over rough roads
  • •Uneven front tyre wear

What to inspect before you buy

  • ✓Inspect bushings for visible tearing
  • ✓Check tyre shoulders for feathering
  • ✓Listen for front-end clonks over broken tarmac

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.

Most affected: 2.0D diesel

Estimated cost: £300–£1,500Affects: 2015–2018

Typical symptoms

  • •Frequent regeneration
  • •DPF warning light
  • •Reduced power

What to inspect before you buy

  • ✓Ask about the car’s typical use
  • ✓Check for recent DPF cleaning or replacement
  • ✓Look for soot-related faults on a diagnostic scan

Buying Tips for the 2015 Subaru Outback Mk5 (BS)

  • ✓A petrol BS is usually the sweet spot; diesel cars need clear evidence of long-distance running and DPF-friendly use.
  • ✓Test the Eyesight cameras and adaptive cruise if fitted, and be wary of cracked windscreens that may need calibration.
  • ✓The best cars have proof of CVT fluid changes and recent front suspension work rather than just routine servicing.
2019–2020 Subaru Outback Mk5 (BS)

Browse 2015–2018 Subaru Outback Mk5 (BS) in our Directory

View MOT history, registration data, and reliability scores for 2015–2018 Subaru Outback Mk5 (BS) vehicles.

View 2015–2018 Directory

Other Subaru Outback Mk5 (BS) Year Periods

2015–20182019–2020

Looking at a specific 2015 Subaru Outback Mk5 (BS)?

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

Free Vehicle Check