Audi A8 (D4) Problems by Year
The D4 Audi A8 is a remarkably agile flagship luxury saloon, benefiting immensely from its lightweight all-aluminium Audi Space Frame (ASF) construction. It serves as a formidable rival to the Mercedes S-Class and BMW 7 Series, offering discreet styling, Quattro all-wheel drive, and a whisper-quiet cabin. While depreciation makes it a tempting used buy, it carries immense complexity in its air suspension, dense electronics, and densely packaged V8 engines, meaning running costs are stratospheric. It suits discerning luxury buyers who prefer understated elegance and tech-forward interiors, provided they have a healthy maintenance budget.
Select a year below to see the specific problems affecting that model year, with estimated repair costs and severity ratings.
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Browse Audi A8 (D4) in our Directory
View MOT history, registration data, and reliability scores for the Audi Audi A8 (D4).
View Audi A8 (D4) DirectoryBuying Tips for the 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.