Used Hyundai i10 Oxygen Sensor

Yes, all petrol-engined Hyundai i10s have at least one oxygen (lambda) sensor, which sits in the exhaust system and helps the engine management system control the fuel-air mixture. The i10 has always been a petrol-only model in the UK, so every variant will have this sensor. There is typically a pre-cat sensor and a post-cat sensor, and the one you need will depend on which position has failed.

Almost certainly not — the first-generation i10 (2007–2013) and the second-generation i10 (2013–2019) use different engine families with different engine codes, and the sensor specification, connector type, and wiring plug are unlikely to be the same. Always match the replacement to your exact engine code, which you can find on your V5C or by giving your registration to the breaker. Do not assume a sensor from across that 2013 generation boundary will interchange without confirming against your registration.

No, trim level does not affect which oxygen sensor you need — the sensor is determined by the engine code and model year, not by whether the car is a Classic, SE, Premium, or N Line. You can safely source a sensor from a different trim car as long as the engine code and generation match yours. There may be cosmetic differences in surrounding components, but the sensor itself will be the same across trims sharing the same engine.

Both a 2013 and a 2016 i10 fall within the second generation (2013–2019), so they are more likely to share the same sensor than cars from different generations, but you should still confirm the engine codes match exactly before buying. The second generation received a facelift in 2016, and while the running gear was largely carried over, it is worth asking the breaker to cross-reference the part against your specific registration. Never assume fitment based on year alone.

Yes, it matters significantly — the pre-cat (upstream) sensor and the post-cat (downstream) sensor can have different specifications, wire lengths, and thread sizes even on the same car. Tell the breaker which sensor position has failed, and if possible quote the fault code from your diagnostic scan, as this will identify upstream or downstream clearly. Fitting the wrong positional sensor may not trigger an immediate fault but can cause incorrect fuelling or emissions failures at MOT.

Yes, this is a real risk — Euro 5 and Euro 6 engines may use sensors calibrated to different emissions strategies, and fitting one from the wrong emissions era could result in poor fuelling, a management warning light, or an MOT emissions failure. The Euro 6 transition broadly affected new registrations from September 2015 onwards, so an i10 registered before and after that date may not share the same sensor specification even if the engine looks similar. Confirm the emissions standard and engine code of the donor vehicle with the breaker before purchasing.