Air Suspension Failure
SeriousSuspension & ChassisAir struts leak and the compressor burns out trying to compensate. This is a common and expensive reality of aging luxury cars.
Est. Repair Cost: £1,000–£3,000
Reliability GuideCommon Problems with the
Common Problems with the
2016–2017 Audi A8 (D4)
We've identified 4 known issues that can affect the 2016–2017 Audi A8 (D4). 2 of these are serious faults that could be expensive to repair.
4
Known Issues
2
Serious
2
Moderate
0
Minor
All Known Issues
4.0 TFSI Turbo Strainer Blockage
SeriousEngineA tiny oil strainer screen feeding the twin turbos can block with carbon, starving the turbos of oil and causing rapid, catastrophic failure.
Est. Repair Cost: £3,000–£5,000
Electrical Module and Sensor Failures
ModerateElectrics & ElectronicsThe complex electronics produce various module failures including air suspension control units, comfort modules, and sensor faults as the car ages.
Est. Repair Cost: £200–£1,500
Cooling System Leaks
ModerateCooling SystemThe coolant regulating valve, water pump, and various plastic hoses can leak, causing gradual coolant loss and potential overheating.
Est. Repair Cost: £350–£1,000
Buying Tips for 2016–2017 Audi A8 (D4)
- ✓Test the adaptive air suspension in all modes (Comfort, Dynamic, Lift); the car should not sag, and the compressor shouldn't sound excessively loud or run constantly.
- ✓Check the complicated MMI infotainment system and the motorized pop-up screen for smooth operation, as the retraction mechanism gears frequently fail.
- ✓Inspect the V8 4.2 TDI and TFSI engines for oil leaks, particularly around the oil cooler in the V-valley, which is a labor-intensive and expensive job to fix.
- ✓Ensure all soft-close doors, massaging seats, and electrically adjustable rear seats function flawlessly, as diagnosing faults in the vast electrical network is very costly.
- ✓Listen for timing chain rattle on cold startup; like the A7, replacing the chains on these engines requires full engine removal.
- ✓Verify that the ZF 8-speed automatic gearbox shifts smoothly; while reliable, it benefits greatly from a fluid and filter change around 60,000 miles.