EngineMedium
FB25 oil consumption on some engines.
- Typically appears
- 60,000+ miles
- What to inspect
- Check oil level and top-up history; watch for smoke.
2015–2019 Subaru Outback · common problems & known faults
The Outback is a practical AWD wagon with strong safety scores, but oil consumption, the CVT, and battery drain are the areas to verify.
Compiled & reviewed by the VehicleFaults Research Team · last reviewed July 2026
Quick answer
The most commonly reported faults on the 2015–2019 Subaru Outback are FB25 oil consumption on some engines, CVT behavior — generally durable but service history matters and Wheel bearing wear. Most reported issues are medium or low severity, but a pre-purchase inspection is still recommended. Full inspection points, onset mileage and what to check are listed below.
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Build the inspection planReliability snapshot
Based on the documented faults on this page for the Subaru Outback.
6.3/ 10
- Critical
- 0
- High
- 0
- Medium
- 6
- Low
- 2
Guidance only · reflects reported patterns, not a specific car's condition.
Known faults to check
TransmissionMedium
CVT behavior — generally durable but service history matters.
- Typically appears
- Any
- What to inspect
- Test-drive for smooth power and confirm fluid service.
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Build the inspection planElectricalLow
Battery drain / infotainment (Starlink) glitches.
- Typically appears
- Any
- What to inspect
- Test the head unit and ask about any battery-drain complaints.
ChassisMedium
Wheel bearing wear.
- Typically appears
- 80,000+ miles
- What to inspect
- Listen for a droning hum that changes with cornering.
Body / ExteriorMedium
Power tailgate fails to open, reverses direction unexpectedly, or emits a continuous warning beep.
- Typically appears
- 50,000-80,000 miles
- What to inspect
- Operate the power tailgate using both the key fob and the dashboard button. Ensure it opens fully without groaning, does not reverse direction on its own, and latches securely when closed.
SuspensionMedium
Clunking noise over bumps, vague steering feel, or uneven front tyre wear due to torn front lower control arm rear bushes.
- Typically appears
- 60,000-100,000 miles
- What to inspect
- Apply the handbrake, ensure the vehicle is in Park, and forcefully kick the front tyres front-to-back. Look for excessive rearward wheel movement or shine a torch into the wheel arch to check the rear bush for deep splits.
ExhaustLow
Tinny, metallic rattling noise from underneath the vehicle caused by corroded and fractured exhaust heat shield welds.
- Typically appears
- 40,000-70,000 miles
- What to inspect
- Start the engine from cold. Blip the throttle to around 2,000 rpm and let the revs drop. Listen closely near the front doors for a distinct metallic vibration from the exhaust manifold or catalyst shields.
HVACMedium
Air conditioning blows warm air due to a leaking condenser, often caused by stone strikes or failing O-rings.
- Typically appears
- 30,000-70,000 miles
- What to inspect
- Switch the climate control to maximum cold with the engine running. Verify cold air from the vents within 30 seconds and shine a torch through the lower front grille to check the condenser for dark, oily patches indicating refrigerant leaks.
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Build my inspection planFrequently asked questions
Is the Subaru Outback reliable?
It's a solid, safe AWD wagon; watch oil consumption and keep the CVT serviced.
Do Outbacks burn oil?
Some FB25 engines consume oil — check the level and history before buying.
Is the Outback CVT reliable?
Generally yes with regular fluid service; test-drive for smooth, consistent operation.
Does the 2.5-litre petrol engine use a timing belt or a timing chain?
The 2.5-litre FB25 petrol engine fitted to this generation of Outback utilises a timing chain rather than a rubber timing belt. Under normal operating conditions, this chain is designed to last the lifetime of the vehicle and does not require routine replacement, provided the engine oil is changed strictly according to the manufacturer's schedule.
Do all four tyres need to be replaced at the same time on the Outback?
Yes, Subaru's Symmetrical All-Wheel Drive system is highly sensitive to variations in rolling circumference. Fitting mismatched tyres or mixing new tyres with significantly worn ones can cause the centre differential to bind, leading to severe transmission damage. Always ensure all four tyres are of the same brand, tread pattern, and tread depth.
What should I look out for on the 2.0-litre diesel variants?
The 2.0-litre EE20 diesel engine is prone to Diesel Particulate Filter (DPF) blockages if used primarily for short, urban journeys. Additionally, early examples suffered from EGR valve failures and glow plug issues. Ensure the vehicle has a comprehensive service history and check the dashboard for any illuminated DPF or engine management warning lights.
Sources & further reading
Faults are compiled from documented recalls, technical bulletins, owner reports and mechanic sources, then reviewed for accuracy. This is guidance only · not a substitute for a professional inspection.
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