2004 Subaru Outback Mk3 (BP)
Browse our directory of 2004 Subaru Outback Mk3 (BP) vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.
Registration Directory
Showing registrations 1–40 of 289 for the 2004 Subaru Outback Mk3 (BP). Select any plate for an instant vehicle history check.
Common Problems & Reliability
The 2004 Subaru Outback Mk3 (BP) has 4 known issues. 1 of these are classified as serious faults that could be expensive to repair. 3 are moderate concerns worth inspecting before purchase.
Head Gasket Failure (2.5L Petrol)
SeriousThe 2.5L petrol still suffers from external head-gasket leaks that eventually require an engine-out repair, showing as oil leaking onto the exhaust (burning-oil smell), coolant loss or overheating. UK MOT data records engine oil/coolant and exhaust leaks as failure areas on this generation.
Symptoms: Oil leaking onto exhaust (smell of burning oil), Coolant loss...
Est. repair cost: £1,200–£2,000
Front Suspension Knocking (Strut Mounts, Bushes)
ModerateKnocks and clunks from the front end over bumps and on full-lock turns are commonly traced to worn strut top mounts or suspension bushes. Suspension is a leading MOT failure category on the Outback, so front-end knocks should be investigated at a viewing.
Symptoms: Knock or clunk from the front over bumps, Clunking when turning lock to lock...
Est. repair cost: £200–£700
Rear Subframe and Underbody Corrosion
ModerateUK road salt attacks the rear subframe, suspension mounts and underbody, often before the body panels look rusty. Corrosion around prescribed areas is a recorded MOT failure on this generation and can become structural if left unchecked.
Symptoms: Heavy rust scaling underneath, Corrosion advisories near suspension mounts...
Est. repair cost: £400–£1,500
Exhaust System Corrosion and Leaks
ModerateThe BP Outback's exhaust system rusts under UK winter salt, causing loud blowing or hissing noises and a potential MOT failure on exhaust, emissions and leaks. Noise, emissions and leaks is a recorded failure area, especially on higher-mileage examples.
Symptoms: Loud exhaust roar or hissing, Rattling from underneath the car...
Est. repair cost: £250–£600
Buying Tips for the 2004 Subaru Outback Mk3 (BP)
- Treat early Boxer Diesel (2.0D) models with extreme caution; they are prone to catastrophic crankshaft failure.
- Check the operation of the self-levelling rear suspension; if it sags, it is expensive to fix with genuine parts.
- Listen for front CV joint clicking on full lock, as the boots often split and let in grit.
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