IsItAGoodCar
Reliability Guide

Common Problems with the
2024 Audi Q8 (4M8)

We've identified 3 known issues that can affect the 2024 Audi Q8 (4M8). 2 of these are serious faults that could be expensive to repair.

3
Known Issues
2
Serious
1
Moderate
0
Minor

The 2024 period has 2 more issues than the Audi Q8 (4M8) average across all year periods.

All Known Issues

Adaptive Air Suspension Leaks

SeriousSuspension & Chassis

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

Most affected: All models with air suspension

Estimated cost: £800–£2,500Affects: 2018–2024Often appears around: 40k-80k miles

Typical symptoms

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

What to inspect before you buy

  • ✓Inspect ride height after standing overnight
  • ✓Cycle suspension through height settings
  • ✓Listen for compressor strain or hissing from wheels

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.

Most affected: 50 TDI, 55 TFSI

Estimated cost: £0 (recall) – £1,500Affects: 2018–2024Often appears around: 20k-60k miles

Typical symptoms

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

What to inspect before you buy

  • ✓Check for completed recall or service campaign work
  • ✓Scan for 48V system fault codes
  • ✓Verify battery health

Infotainment and MMI Freezing

ModerateElectrics & Electronics

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

Most affected: All models

Estimated cost: £0–£900Affects: 2018–2024Often appears around: Age-related

Typical symptoms

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

What to inspect before you buy

  • ✓Test both touchscreens extensively
  • ✓Check software version and update history
  • ✓Verify no persistent error messages

Buying Tips for the 2024 Audi Q8 (4M8)

  • ✓Look out for 48V electrical system faults, specifically the Belt Starter Generator (BSG) failure, which will drain the battery and leave the car stranded; verify if it has been replaced under warranty.
  • ✓Test the dual-touchscreen MMI system thoroughly for responsiveness and ensure the haptic feedback works evenly across both screens.
  • ✓Check the frameless doors for excessive wind noise at motorway speeds, which may indicate worn weather seals or poorly aligned window regulators.
  • ✓Inspect the enormous alloy wheels (up to 23 inches) for kerbing and check tyre tread depth; replacing a set of premium tyres is exceptionally expensive.
  • ✓Ensure the adaptive air suspension adjusts smoothly between modes without sagging or throwing dash warnings, as replacing the complex struts is a huge expense.
  • ✓Verify that the automatic gearbox downshifts cleanly when slowing to a stop; some owners report clunky or hesitant downshifts that require transmission software recalibration.
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Other Audi Q8 (4M8) Year Periods

20182019–20212022202320242025

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