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C8 Sedan · Avant
Audi A6 · Sedan · Avant · 2018–
Current A6/S6/RS6 Avant.
Production run
2018–now
Engines covered
5
Avg. part price
—
19902026
Interactive systems map
Inspect the C8
Tap a hotspot to inspect that system
Systems map
Where it goes wrong
Each numbered hotspot counts the documented failure points in that area. Select one to see the specifics for this chassis and engine.
Failure points by system
Engine3
Cooling3
Intake3
Fuel1
Exhaust2
Documented issues per engine
5EA888
4EA839
44.0 TFSI
52.0 TDI
53.0 TDI
Known weak points
What breaks on the C8
Gen1/2 oil consumption (piston rings)Diagnose →Timing chain tensioner (Gen2)Diagnose →Coolant thermostat housingDiagnose →Carbon buildupDiagnose →Turbo oil lines and coolant pipes in the veeDiagnose →PD injector loom and cam wear (PD era)Diagnose →DPF cloggingDiagnose →Swirl flap motorDiagnose →EGR coolerDiagnose →
Guides & playbooks
C8 playbooks
Maintenance scheduleGive me a mileage-based maintenance schedule for a Audi A6 C8, including the items the factory schedule skips.Buyer's inspectionI'm inspecting a used Audi A6 C8. What exactly should I check, test drive and look for underneath?Build planPlan a staged performance build for a Audi A6 C8 that stays reliable as a daily driver.Fault code lookupI have a fault code on my Audi A6 C8. Walk me through what it means and how to confirm the cause.
Fits your C8
Parts & tools
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