Belt Starter Generator (BSG) Failure
SeriousElectrics & ElectronicsThe 48V mild-hybrid system can fail, leading to an "Electrical system: fault" message.
Est. Repair Cost: £0–£1,500
Reliability GuideCommon Problems with the
Common Problems with the
2023 Audi A6 Mk5 (C8)
We've identified 2 known issues that can affect the 2023 Audi A6 Mk5 (C8). 1 of these are serious faults that could be expensive to repair.
2
Known Issues
1
Serious
1
Moderate
0
Minor
All Known Issues
2.0 TDI / 3.0 TDI Coolant Regulation Valve & Water Pump Weepage
ModerateCooling SystemElectrically controlled coolant regulator shut-off valves and vacuum-actuated water pump plastic housings develop weeping leaks, coating the front of the block in crusty pink residue.
Est. Repair Cost: £380–£850
Buying Tips for 2023 Audi A6 Mk5 (C8)
- ✓Ensure the Belt Starter Generator (BSG) recall has been performed
- ✓Check both touchscreens for responsiveness
- ✓Verify AdBlue and NOx sensor health