2009–2016 Audi A4 — common problems & known faults

The B8 A4 is a polished compact executive car, but the 2.0T TFSI's oil consumption and timing-chain tensioner are the critical checks.

Compiled & reviewed by the VehicleFaults Research Team · last reviewed July 2026

Known faults to check

EngineHigh

2.0T TFSI excessive oil consumption from worn piston rings (early builds).

Typically appears
60,000+ miles
What to inspect
Check oil level and top-up history; watch for smoke and ask about ring/piston work.
EngineCritical

Timing chain tensioner failure — can cause catastrophic damage if it lets go.

Typically appears
80,000+ miles
What to inspect
Listen for a rattle on cold start; confirm updated tensioner was fitted.
IntakeMedium

Carbon buildup on intake valves.

Typically appears
70,000+ miles
What to inspect
Watch for rough idle/misfires; ask about walnut blasting.
CoolingMedium

Water pump and thermostat (plastic) failure.

Typically appears
70,000+ miles
What to inspect
Check for coolant leaks and overheating history.

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Frequently asked questions

Is the B8 Audi A4 reliable?

It can be with the right maintenance, but the oil-consumption and timing-chain issues make service history essential.

Which A4 engine burns oil?

Early 2.0T TFSI (EA888 Gen 2) engines are known for oil consumption; later revisions improved it.

What's the timing-chain concern?

A weak tensioner can allow the chain to skip — confirm the updated part was installed.

Sources & further reading

Faults are compiled from documented recalls, technical bulletins, owner reports and mechanic sources, then reviewed for accuracy. This is guidance only · not a substitute for a professional inspection.