IsItAGoodCar

Common Problems with the
2018–2022 Audi A7 (4K8)

We've identified 1 known issue that can affect the 2018–2022 Audi A7 (4K8). 1 of these are serious faults that could be expensive to repair.

1
Known Issues
1
Serious
0
Moderate
0
Minor

The 2018–2022 period has an average number of reported issues compared to other Audi A7 (4K8) year periods.

All Known Issues

48V Mild-Hybrid Alternator/Starter Failure

SeriousElectrics & Electronics

The Belt Alternator Starter (BAS) on 48V models can fail, disabling the start-stop system and eventually draining the battery.

Most affected: 50 TDI, 55 TFSI

Estimated cost: £1,000–£2,500Affects: 2018–2022

Typical symptoms

  • •Electrical system malfunction warning
  • •Start-stop stops working
  • •Car refuses to start

What to inspect before you buy

  • ✓Check for recall or warranty replacement history
  • ✓Scan for low voltage or generator faults

Buying Tips for the 2018 Audi A7 (4K8)

  • ✓Test the dual touchscreens (MMI) extensively for lag or freezing, as early software bugs were common
  • ✓Check for any "Electrical System Malfunction" warnings, which often relate to the 48V mild-hybrid system
  • ✓Listen for clunks from the front suspension, as heavy weight takes its toll on control arm bushes
2023–2025 Audi A7 (4K8)

Browse 2018–2022 Audi A7 (4K8) in our Directory

View MOT history, registration data, and reliability scores for 2018–2022 Audi A7 (4K8) vehicles.

View 2018–2022 Directory

Other Audi A7 (4K8) Year Periods

2018–20222023–2025

Looking at a specific 2018 Audi A7 (4K8)?

Enter the registration number to check its full MOT history, outstanding finance, write-off status, and more.

Free Vehicle Check