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.
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
Quick answer
The most commonly reported faults on the 2009–2016 Audi A4 are Timing chain tensioner failure — can cause catastrophic damage if it lets go, 2.0T TFSI excessive oil consumption from worn piston rings (early builds) and Carbon buildup on intake valves. Of the documented issues, 1 rated critical and 1 rated high · these are the ones worth inspecting first. Full inspection points, onset mileage and what to check are listed below.
Reliability snapshot
Based on the documented faults on this page for the Audi A4.
5.9/ 10
- Critical
- 1
- High
- 1
- Medium
- 2
- Low
- 0
Guidance only · reflects reported patterns, not a specific car's condition.
Known faults to check
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.
Inspecting a Audi A4?
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Check this exact carFrequently 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.