Multitronic CVT Failure
SeriousGearbox & TransmissionThe CVT can judder, flare or lose drive entirely. It is generally less reliable than the Tiptronic or manual alternatives.
Est. Repair Cost: £1,000–£2,500
Reliability GuideCommon Problems with the
Common Problems with the
2005 Audi A4 Mk2 (B6)
We've identified 5 known issues that can affect the 2005 Audi A4 Mk2 (B6). 3 of these are serious faults that could be expensive to repair.
5
Known Issues
3
Serious
2
Moderate
0
Minor
All Known Issues
1.8T Timing Belt / Water Pump Failure
SeriousEngineThe 1.8T engine uses a timing belt that can fail if intervals are not maintained, destroying the engine. The plastic water pump impeller can also strip.
Est. Repair Cost: £400–£800
Oil Sludge Buildup
SeriousEngineThe 1.8T engine is prone to oil sludge if servicing has been neglected, blocking the oil pickup and starving the engine of lubrication.
Est. Repair Cost: £400–£1,500
Door Wiring Loom Fracture
ModerateElectrics & ElectronicsWires in the door rubber boot fatigue and break over time, causing central locking, window and mirror failures on the driver or passenger side.
Est. Repair Cost: £100–£400
Ignition Coil Pack Misfire
ModerateEngineCoil packs deteriorate with age causing misfires and rough running, a common issue across VW Group petrol engines.
Est. Repair Cost: £40–£150
Buying Tips for 2005 Audi A4 Mk2 (B6)
- ✓Avoid Multitronic CVT cars without a perfect service history
- ✓Check the plenum chamber (under the battery) for water; blocked drains can fry the ECU
- ✓Test all electric windows and door locks