Hyundai i40 Oxygen Sensor Replacement Parts

Yes, but only on petrol-engined i40s — the 1.6 GDi and 2.0 GDi variants use lambda (oxygen) sensors as part of their engine management and emissions control systems. The i40 diesel (1.7 CRDi) does not use a conventional oxygen sensor; diesels use different sensors such as a NOx sensor or air-fuel ratio sensor rather than the wideband lambda type found on petrol engines. If you drive a diesel i40 and are chasing an emissions or engine fault, confirm with the breaker exactly which sensor your engine uses before ordering.

The Hyundai i40 was sold in the UK from 2011 and received a facelift in 2015, running through to the end of UK sales around 2019. On petrol variants the engine codes and exhaust configurations did not change significantly across that facelift, so pre- and post-2015 petrol oxygen sensors may share the same part, but this is a boundary worth checking — confirm with the breaker against your exact registration and engine code rather than assuming year-to-year compatibility.

Trim level does not affect oxygen sensor fitment on the i40 — what matters is the engine code and fuel type, not whether your car is an S, SE, Premium, or Sport. All petrol i40s of the same engine variant use the same sensor regardless of trim, so you don't need to specify trim when asking a breaker for a quote. The only thing worth mentioning is the engine code and your registration, so the breaker can match the correct part.

The 1.6 GDi and 2.0 GDi are different engines with different exhaust configurations, and the oxygen sensors are not necessarily interchangeable between them — position, thread size, and connector type can differ. Always give the breaker your engine code (found on your V5C or visible on the engine itself) rather than just the displacement, so they can source the correct sensor. Never assume a sensor from a different engine variant will fit or read correctly, as a mismatch can cause running problems and MOT failures.

Emissions era can matter because Euro 6 calibration requirements are stricter, and sensors from a different emissions generation may not report correctly to the ECU even if they physically fit. The i40 petrol models sold in the UK were predominantly Euro 5, and later examples moving toward the end of production may have Euro 6 compliance — confirm which standard applies to your car using your registration before buying a used sensor. A breaker will be able to check this against the donor vehicle's details to make sure you get a sensor from a matching emissions generation.

Used oxygen sensors from a reputable breaker are a practical option, especially given that new genuine or OE-quality sensors for the i40 can be expensive, and a low-mileage donor car sensor can work perfectly well. The key is to make sure the breaker matches your engine code and emissions era exactly, as a sensor from the wrong variant may cause fault codes or fail your MOT emissions test. Ask the breaker about the donor vehicle's mileage and condition, and make sure you get the correct connector and thread type for your specific engine.