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 Jerky shifting, hesitation pulling away, or stalling due to S tronic (DL501) mechatronic unit failure. Of the documented issues, 1 rated critical and 2 rated high · these are the ones worth inspecting first. Full inspection points, onset mileage and what to check are listed below.
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Build the inspection planReliability snapshot
Based on the documented faults on this page for the Audi A4.
3.5/ 10
- Critical
- 1
- High
- 2
- Medium
- 4
- Low
- 1
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.
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Build the inspection planIntakeMedium
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.
SuspensionMedium
Clunking noises over bumps and vague steering feel caused by torn lower control arm bushes.
- Typically appears
- 50,000-70,000 miles
- What to inspect
- Turn the steering to full lock and visually inspect the large rubber bushes on the lower front control arms for deep splits or fluid leaks. Rock the front wheels firmly at 9 and 3 o'clock.
TransmissionHigh
Jerky shifting, hesitation pulling away, or stalling due to S tronic (DL501) mechatronic unit failure.
- Typically appears
- 60,000-80,000 miles
- What to inspect
- With the engine running, shift from Reverse to Drive several times. Note any delay or harsh clunking. Pull away slowly on a slight incline to check for clutch judder or hesitation.
SteeringMedium
Notchy, stiff, or binding steering feel caused by a seized intermediate steering shaft U-joint.
- Typically appears
- 70,000-100,000 miles
- What to inspect
- With the engine idling, turn the steering wheel slowly from lock to lock. Feel for tight spots or a distinct 'notchy' resistance occurring every 90 degrees of rotation.
ElectricalLow
Doors fail to lock or unlock with the remote fob due to internal microswitch failure in the door lock actuators.
- Typically appears
- 6-8 years
- What to inspect
- Use the key fob to lock the car. Pull all four exterior door handles to ensure they have actually locked. Unlock with the fob and verify every door opens successfully from the outside.
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Build my inspection planFrequently 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.
How do I identify if the car has a Multitronic or S tronic gearbox?
Front-wheel-drive B8 automatics use the Multitronic CVT, whilst Quattro models feature the seven-speed S tronic dual-clutch transmission. Multitronic gearboxes are prone to ECU failure and require strict 40,000-mile fluid changes to prevent juddering. Always check the PR codes in the boot or service book to confirm the exact transmission.
Are there common issues with the diesel particulate filter on the 2.0 TDI?
Yes, the 2.0 TDI frequently suffers from blocked DPFs if the vehicle has primarily been driven on short, urban journeys. The exhaust gas recirculation valve is also prone to carbon fouling. Always check the dash for the DPF warning light and ensure the exhaust tailpipes are not excessively sooty.
What should I look out for regarding the electronic parking brake?
The rear electronic parking brake motors are susceptible to water ingress, causing the plastic casing to crack and the internal motor to seize. Listen for a strained whining noise when engaging the switch. If the brake fails to release, the entire caliper and motor assembly will require costly replacement.
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.
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