Audi A6
EA888 Evo with 180 kW and 48V mild hybrid. Entry petrol of the A6 C8 range with a good balance of power and economy.
Smooth multi-cylinder — relaxed cruising
245 hp 2.0L with a smooth, refined character. Relaxed cruiser with no sporting ambitions. Factor in the known weak points.
Engine Weaknesses 5
The EA888 Gen3 has improved but not completely problem-free timing chain drive compared to earlier generations. Chain tensioners can wear from around 100,000–150,000 km. Early Gen3 variants show higher failure rates than later ones.
Symptoms: Metallic rattling on cold start (1–3 seconds), check engine light, with severe stretch power loss and rough running
As a direct injector without port injection, the EA888 Gen3 tends to intake valve coking. Newer versions with combined injection (PFI+DI) mitigate the problem. Walnut blasting every 80,000 km recommended.
Symptoms: Cold-start misfires, noticeable power loss in the mid-rpm range, rough running at low temperatures
The EA888 Gen3 coolant pump can develop leaks or fail after 100,000–120,000 km. Early diagnosis prevents secondary damage from overheating.
Symptoms: Coolant level drops with no visible external leak, coolant smell from the engine bay, occasional overheating in city traffic
Early EA888 Gen3 engines show significantly fewer oil consumption problems compared to Gen1/Gen2. Individual cases of elevated consumption are still reported, usually caused by worn oil scraper rings.
Symptoms: Bluish exhaust fumes especially when lifting off throttle, dropping oil level between inspections, occasional oil smell
The DEMA 1.0 TFSI three-cylinder shows rough running and occasional misfires especially on cold start. Ignition coils need replacing sooner than on four-cylinder engines.
Symptoms: Vibrations, rough idle on cold start, engine warning light — misfires, torque reduction.
Vehicle Weaknesses 6
Contamination of the bonding surface during manufacture can cause the rear panoramic roof module to detach. Affects A6 models produced in 2018.
On the A6 Avant (MY 2018), the rear glass panel of the panoramic roof was incorrectly bonded. Audi recalled 1,435 vehicles in Germany. Creaking/scraping noises and water ingress are further known issues with the panoramic roof.
Stress corrosion cracking can cause excessive play between the control arm and wheel carrier on the A6 C8 (MY 2019–2021), impairing driving stability. Recall by KBA (action 42L1), free repair at dealer.
High-voltage battery cell modules on A6, A7, Q5 PHEV models can overheat during charging (KBA 15722R / code 93AD). 53,449 vehicles worldwide, 17,012 in Germany affected (production period 08/2019–08/2024). Software update takes approx. 60 minutes.
The MMI infotainment system stands out for frozen displays, unexpected reboots and Apple CarPlay/Android Auto failures. Software updates only partially resolve the problem.
On some A6 C8s, water enters through a leaking wheel arch liner, causing musty smells and moisture in the footwell or boot.