Injectors Seat: problems by model and engine

Documented faults, from most to least important

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

- 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 Altea, Ibiza III, Ibiza IV, León I, León II and Toledo II
- 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 Alhambra II, Altea, Exeo and León II
- 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 Arona, Ateca, Ibiza V and León III

By Seat model

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

Engines and gearboxes involved

Parts for your Seat 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 Seat cars have?

In 12 models from Seat there are 3 documented faults with the injectors. The most important: unit injector tappet wear and injector wiring damage, high-pressure pump, injectors and diesel leaks on the EA189 and leaking injectors on the 1.0 TSI (2020 recall). Each fault has its own page with the affected years and versions, the symptoms and the repair cost.

Which Seat models have the most problems with the injectors?

Seat Altea (2 faults), Seat León II (2 faults), Seat León I (1 fault) and Seat Toledo II (1 fault).

Which Seat engines have faults with the injectors?

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