Reliability Guide

Common Problems with the
2017 Audi A8 Mk4 (D5)

We've identified 3 known issues that can affect the 2017 Audi A8 Mk4 (D5). 1 of these are serious faults that could be expensive to repair.

3
Known Issues
1
Serious
1
Moderate
1
Minor

All Known Issues

Air Suspension Strut Leaks

SeriousSuspension & Chassis

The standard adaptive air suspension develops leaks over time, causing uneven ride height and expensive compressor replacement.

Est. Repair Cost: £800–£3,000

Dual-Touchscreen MMI Freezes

ModerateElectrics & Electronics

Both the upper and lower MMI screens can freeze, go black, or reboot, affecting navigation, climate and seat controls.

Est. Repair Cost: £0–£2,500

Software and Vehicle Management Glitches

MinorElectrics & Electronics

The extensive software architecture can produce phantom warnings, driver-assistance calibration issues, and infotainment bugs.

Est. Repair Cost: £0–£500

Buying Tips for 2017 Audi A8 Mk4 (D5)

  • Check for any warning lights related to the 48V electrical system; failures of the Belt Starter Generator (BSG) are common, expensive, and will leave the car completely immobilized.
  • Test the dual-screen MMI system extensively for lag, freezing, or haptic feedback failures, as software bugs are frequent and may require dealer updates.
  • Ensure the predictive active air suspension (if optioned) functions correctly without warning lights; it is incredibly complex and uses cameras to read the road ahead.
  • Inspect the huge alloy wheels for damage and verify the condition of the tyres, as they are acoustically insulated and very expensive to replace.
  • Check the operation of the dynamic all-wheel steering at low speeds; it should turn smoothly without groans or clunks from the rear axle.
  • Verify the interior trim, particularly the motorized air vent covers, which can fail to open or close smoothly due to weak motors.