IsItAGoodCar
Reliability Guide

Common Problems with the
2022 Audi Q8 (4M8)

By 2022 the initial BSG and software issues had been largely resolved through recalls and updates. This is generally the safest used Q8 buy, though air suspension health remains the key check.

What changed for 2022

  • •Updated engine range and mild-hybrid calibration
  • •Revised MMI software with improved stability
  • •Added driver-assistance features

Common MOT watch-outs

  • !Air suspension leaks at 40k–80k miles
  • !Brake disc and pad wear on heavy SUV
  • !Tyre costs on 21- or 22-inch wheels
4
Known Issues
3
Serious
1
Moderate
0
Minor

All Known Issues

48V Mild Hybrid System Faults

SeriousElectrics & Electronics

The belt-starter-generator can fail, disabling start-stop and energy recuperation, and potentially stranding the car when both batteries drain.

Est. Repair Cost: £0 (recall) – £1,500
Warning Signs:

Electrical system malfunction warning, Start-stop inactive, Rough engine restarts

What to Inspect:
  • Check for completed recall or service campaign work
  • Scan for 48V system fault codes
  • Verify battery health
Verified by IsItAGoodCar Research Team

Adaptive Air Suspension Leaks

SeriousSuspension & Chassis

The air springs can develop leaks causing uneven ride height, and the compressor burns out trying to compensate.

Est. Repair Cost: £800–£2,500
Warning Signs:

One corner sitting low after parking, Compressor running constantly, Air suspension warning light, Bouncy ride

What to Inspect:
  • Inspect ride height after standing overnight
  • Cycle suspension through height settings
  • Listen for compressor strain or hissing from wheels
Verified by IsItAGoodCar Research Team

TDI SCR / AdBlue System Faults

SeriousExhaust & Emissions

Diesel versions with SCR can develop dosing, heater or NOx sensor faults. A system fault may lead to a no-restart countdown even with sufficient AdBlue; diagnosis should distinguish fluid level from component failure.

Warning Signs:

AdBlue system warning, No-restart countdown

What to Inspect:
  • Check warning history and emissions repair invoices
  • Request a diagnostic check of dosing pressure, heater operation and NOx readings
Verified by IsItAGoodCar Research TeamUpdated

Infotainment and MMI Freezing

ModerateElectrics & Electronics

The dual-touchscreen MMI system can freeze, go black, or reboot spontaneously, affecting climate and vehicle controls.

Est. Repair Cost: £0–£900
Warning Signs:

Frozen or black screens, Climate controls unresponsive, Navigation or media dropouts

What to Inspect:
  • Test both touchscreens extensively
  • Check software version and update history
  • Verify no persistent error messages
Verified by IsItAGoodCar Research Team

Buying Tips for 2022 Audi Q8 (4M8)

  • ✓Ensure air suspension sits level after standing overnight
  • ✓Check that all software recalls and updates have been applied
  • ✓Budget £800–£2,500 per corner if air suspension needs attention
2019–20212023–2024
Check a 2022 Audi Q8 (4M8) by Registration