Oil Pump / Balance Shaft Failure
SeriousEngineThe hex drive for the oil pump rounds off, leading to instant loss of oil pressure and engine seizure.
Est. Repair Cost: £700–£3,000+
Reliability GuideCommon Problems with the
Common Problems with the
2007 Audi A4 Mk3 (B7)
By 2007 some of the worst 2.0 TDI issues had been addressed with updated parts, but the balance shaft problem persists on all chain-driven 2.0 PD engines. The 2.0 TFSI cam follower issue was also better understood.
What changed for 2007
- •Updated 2.0 TDI with gear-driven balance shaft (some cars)
- •Revised trim and equipment levels
- •Minor engine calibration updates
- •Improved build quality over early cars
Common MOT watch-outs
- !Balance shaft failure still possible on chain-driven engines
- !DPF clogging on short-trip diesels
- !Boot lid rust around number plate lights
5
Known Issues
2
Serious
3
Moderate
0
Minor
All Known Issues
2.0 TDI Cylinder Head Cracking
SeriousEngineEarly 2.0 TDI engines with head casting numbers V330, V320, V125 and V130 are prone to cylinder head cracking, causing coolant loss and overheating.
Est. Repair Cost: £1,000–£2,500
DPF Clogging and Regeneration Failure
ModerateExhaust & EmissionsTown-driven diesel cars struggle to regenerate the DPF, leading to warning lights, limp mode and expensive DPF cleaning or replacement.
Est. Repair Cost: £250–£1,200
2.0 TFSI High Pressure Fuel Pump Cam Follower
ModerateEngineThe cam follower for the high-pressure fuel pump wears rapidly on 2.0 TFSI engines, leading to fuel pressure loss, misfires and potential pump damage.
Est. Repair Cost: £150–£400
Diverter Valve (DV) Diaphragm Split
ModerateEngineThe rubber diaphragm in the diverter valve splits on 2.0 TFSI engines, causing boost leaks, poor performance and turbo flutter noises.
Est. Repair Cost: £50–£200
Buying Tips for 2007 Audi A4 Mk3 (B7)
- ✓Prefer cars with the gear-driven balance shaft update
- ✓Check for evidence of DPF-related fault codes
- ✓Look for rust around the boot lid number plate lights