Audi Allroad B8 common faults.

2007–2015. The fault list covers this generation and the engines in it. If the listing gives the exact version, pick it below.

What to watch for

What can go wrong on this car?

The list covers the generation, the engines and the transmissions. Once you pick the version, only the faults that apply to it stay.

critical6

1.6 and 2.0 TDI: the EGR cooler leaks internally and coolant disappears without a trace

critical

The EGR cooler cools the recirculated exhaust gas before it enters the intake again, and coolant flows through it while it does so.

Applies to the engine CAHA, CNHA.

Repair: 600–1,500 EUR

2.0 TDI (EA188, EA189): the hex drive of the oil pump rounds off

critical

The balance shaft module drives the oil pump through a hexagonal shaft stub.

Applies to the engine CAGA, CAHA, CJCA and 1 more.

3.0 TDI V6: the high-pressure pump sends metal debris into the fuel system

critical

The common rail high-pressure pump is lubricated and cooled by the diesel itself, because the pump produces over 2,000 bar and has no separate lubrication circuit.

Applies to the engine CDUC.

Repair: 1,500–15,000 EUR

1.6 and 2.0 TDI: the belt driving the oil pump runs in oil and crumbles

critical

On these engines the oil pump is driven by its own small toothed belt, and that belt runs in the hot engine oil.

Applies to the engine CNHA.

Repair: 200–600 EUR

2.7 / 3.0 TDI V6: the rear timing chain and the oil pump drive

critical

The timing chain of the longitudinal V6 diesel runs at the back of the engine, on the gearbox side, so replacing it means taking out the engine or the gearbox.

Applies to the engine CDUC, CLAB.

Multitronic (continuously variable CVT): jerking, control unit, chain

critical

The continuously variable gearbox of the longitudinal engine Audis (Multitronic) is vulnerable from both the control unit and the drive chain side.

Applies to the transmission 0AW.

expensive2

B8 platform: the actuator motor of the electric parking brake

expensive

A small electric motor built into the rear brake calipers applies the parking brake.

It can affect every car in this generation.

2.0 TFSI (EA888 gen2): undersized oil scraper ring, oil consumption

expensive

The EA888 engines built between 2008 and 2011 got a 1.5 mm oil scraper ring instead of a 2 mm one, and the 0.3 mm drain holes in that ring soot up and then block.

Applies to the engine CAEB.

Repair: 2,000–5,000 EUR

8 more faults belong to this generation. On the version page, only the ones that apply stay.

Engines and transmissions in this generation

A fault is often tied to the engine, not to the whole generation. You find the engine code in the registration document.

B8 · 2007–2015

Pick the version.

The fault list opens on the version page.

36 versions

EngineVersionPowerFuel · transmissionBody

Neighbouring generations

B8 · 2007–2015

B8 (2007-2015). If the listing is from the changeover year, look at the neighbour too.

Previous generation

C6 · 2004–2011

This generation

B8 · 2007–2015

Next generation

C7 · 2011–2018

Common questions

About this generation

Which years does this page cover?

2007–2015. The changeover year can fall in two generations. If the listing is from that year, look at the neighbour too.

Does the fault apply to every car like this?

No. It depends on the engine and the transmission too.

Is it free?

The fault list is.

Information, not an expert opinion

We write the descriptions, and we put the source next to them. A person reviews them before they go out. They are still information, not a technical expert opinion.

A fault on the list does not mean the car you are looking at has it.
A fault missing from the list does not mean the model is fault-free. Write-ups are made model by model. Not all of them are done.
You decide whether to buy. This is no substitute for an inspection. That needs a workshop and a history check.

Details in the terms