Common Problems with the
2015 Audi A4 Mk4 (B8)

We've identified 2 known issues that can affect the 2015 Audi A4 Mk4 (B8). None are considered critical, but they're worth knowing about before you buy.

Known Issues

Serious

Moderate

Minor

The 2015 period has 1 more issue than the Audi A4 Mk4 (B8) average across all year periods.

All Known Issues

Water Pump / Thermostat Housing Leak

ModerateCooling System

The plastic water pump and thermostat housing warp and leak coolant, a well-known weakness across the EA888 range. Some cars fail twice before 100k miles.

Most affected: 1.8 TFSI, 2.0 TFSI, 2.0 TDI

Estimated cost: £350–£750Affects: 2008–2016Often appears around: 40k-90k miles

Typical symptoms

•Low coolant warning
•Pink crust near housing
•Sweet smell after shutdown

What to inspect before you buy

✓Inspect around the pump and housing
✓Verify coolant level from cold
✓Check for recent cooling-system work

Electric Steering Lock Failure

ModerateElectrics & Electronics

The electronic steering column lock (ELV) module can fail, preventing the car from starting or unlocking the steering. A known weak point on B8 cars.

Most affected: All models

Estimated cost: £300–£800Affects: 2008–2015Often appears around: 60,000–120,000 miles

Typical symptoms

•Steering remains locked
•Car will not start
•Steering lock warning message

What to inspect before you buy

✓Test steering lock/unlock cycle
✓Check for steering lock fault codes
✓Ask if ELV module has been replaced

Buying Tips for the 2015 Audi A4 Mk4 (B8)

✓CRITICAL: monitor the oil level on pre-2012 2.0 TFSI cars and expect proof of piston-ring work
✓Listen for timing-chain rattle on petrol models after an overnight rest
✓Check steering weight and self-centering carefully

2014 Audi A4 Mk4 (B8)2016 Audi A4 Mk4 (B8)