Injectors Audi: problems by model and engine

Documented faults, from most to least important

Severity × frequency. Below each one, the Audi models it appears in.

- High severityFrequency: Occasional3.0 TDI V6Injector wear (needle seat) and injection faultsGerman guides point to wear of the needle seat of the 3.0 TDI injectors: they stop closing properly, diesel drips into the cylinder and dilutes the oil. Smoke from the exhaust can be the warning, and reports on the 313 hp twin-turbo repeat injection faults.
In A4 B7, A4 B8, A4 B9, A5 I, A5 II and A6 C6 and 12 more models
- High severityFrequency: Occasional2.0 TDIHigh-pressure pump, injectors and diesel leaks on the EA189On the 2.0 TDI EA189, the high-pressure pump can shed metal particles that force the pump and injectors to be replaced. In addition, 2009-2011 units were recalled for diesel leaks from the high-pressure pipes.
In A3 II, A4 B8, Q3 I and Q5 I
- High severityFrequency: Occasional1.9 TDIUnit injector tappet wear and injector wiring damageOn the unit injector system, the tappets that operate the injectors can wear if the oil is not changed on time, and the injector wiring can be damaged by contact with oil, causing misfires or loss of power.
In A3 I and A6 C5
- Low severityFrequency: Rare1.0 TSI / 1.5 TSILeaking injectors on the 1.0 TSI (2020 recall)In 2020 Volkswagen, Seat and Škoda recalled around 9,200 cars with three-cylinder TSI engines from the 2018–2020 model years: their injectors could drip petrol into the chamber after the engine was switched off and exceed emission limits. The injectors are replaced.
In A1 I, A1 II, A3 III and Q2

By Audi model

Open yours to see only the faults that affect it, by engine and by year.

Engines and gearboxes involved

Parts for your Audi for faults with the injectors

Add the model and engine in the shop, or better still the registration plate or VIN, to see only the parts that fit.

Injector
- Buy part at Autodoc (affiliate link, opens in a new tab)

Affiliate links: if you buy from these shops, MotorFiable may receive a commission at no cost to you. Check compatibility against the registration plate or VIN before ordering. Affiliate links

Frequently asked questions

What faults with the injectors do Audi cars have?

In 26 models from Audi there are 4 documented faults with the injectors. The most important: injector wear (needle seat) and injection faults, high-pressure pump, injectors and diesel leaks on the EA189 and unit injector tappet wear and injector wiring damage. Each fault has its own page with the affected years and versions, the symptoms and the repair cost.

Which Audi models have the most problems with the injectors?

Audi A4 B8 (2 faults), Audi Q5 I (2 faults), Audi A3 I (1 fault) and Audi A6 C5 (1 fault).

Which Audi engines have faults with the injectors?

1.0 TSI / 1.5 TSI (1 fault), 1.9 TDI (1 fault), 2.0 TDI (1 fault) and 3.0 TDI V6 (1 fault).