With direct injection the fuel does not wash the intake valves: the petrol goes into the cylinder, not behind the valve.
Applies to the engine CWGD.
vinkodex.Audi S4 B9 common faults.
2015–2019. The fault list covers this generation and the engines in it. If the listing gives the exact version, pick it below.
Dinkun Chen / CC BY-SA 4.0
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.
expensive1
comfort1
The G62 sensor tells the engine control unit how hot the coolant is.
Applies to the engine CWGD.
Official recall1 recallsShowThe manufacturer fixes these for free at a franchised dealer. Ask with the VIN whether it was done. The list covers the whole generation. We did not filter it by model year. Some apply only to a narrower production window.
A12/0382/19Safety recallFireno date · EU Safety GateIn certain vehicles, fuel can leak onto the engine fuel rail. Fuel leakage close to a source of ignition may increase the risk of the vehicle catching fire.
Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown
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.
B9 · 2015–2019
Pick the version.
The fault list opens on the version page.
2 versions
Neighbouring generations
B9 · 2015–2019
B9 (2015-2019). If the listing is from the changeover year, look at the neighbour too.
Common questions
About this generation
Which years does this page cover?
2015–2019. 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.