Question 1

What is Coolant Leak in Engine "V" on the Audi Audi A6 Mk4 (C7)?

Accepted Answer

The coolant shut-off valve fails, filling the engine valley with coolant.

Question 2

What is 3.0 TDI Timing Chain Rattle on the Audi Audi A6 Mk4 (C7)?

Accepted Answer

The V6 TDI timing chains sit at the rear of the engine and the hydraulic tensioners can weaken, causing cold-start rattle and potential chain jump if ignored.

Question 3

What is DPF Clogging and Regeneration Issues on the Audi Audi A6 Mk4 (C7)?

Accepted Answer

Town-driven 3.0 TDI models block their DPFs, causing warning lights, limp mode and expensive DPF cleaning or replacement.

Question 4

What is Adaptive Air Suspension Leak on the Audi Audi A6 Mk4 (C7)?

Accepted Answer

Cars with optional adaptive air suspension develop leaks in the air struts, causing the car to sag and the compressor to overwork and fail.

Question 5

What is Electrical Module and Sensor Faults on the Audi Audi A6 Mk4 (C7)?

Accepted Answer

Various electrical issues including MMI glitches, parking sensor failures, steering lock module faults and battery drain from comfort module issues.

Question 6

What should I check when buying a used Audi Audi A6 Mk4 (C7)?

Accepted Answer

Check for coolant leaks in the "V" of 3.0 TDI engines

Question 7

What should I check when buying a used Audi Audi A6 Mk4 (C7)?

Accepted Answer

S tronic (DSG) models need fluid changes every 38k miles

Question 8

What should I check when buying a used Audi Audi A6 Mk4 (C7)?

Accepted Answer

Listen for humming from the front wheels (wheel bearings)

Question 9

What years was the Audi Audi A6 Mk4 (C7) made?

Accepted Answer

The Audi Audi A6 Mk4 (C7) was produced from 2011 to 2018.

Audi Audi A6 Mk4 (C7)

Audi A6 Mk4 (C7) Reliability & Common Faults

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