Mercedes-Benz GLE Oxygen Sensor Replacement Parts

Yes, but only on petrol-engined GLE variants — the petrol engine management system uses lambda/oxygen sensors before and after the catalytic converter to control fuel mixture and monitor emissions. Diesel GLE models (which make up a large portion of UK sales) do not use oxygen sensors in the same way; diesels use NOx sensors and other emissions components instead, so if your GLE is diesel, an oxygen sensor is not the part you need. If you are unsure whether your GLE is petrol or diesel, check your V5C or registration certificate before searching.

Engine code is the most important factor when sourcing a used GLE oxygen sensor — for example, the 3.0-litre petrol M276 engine used in the GLE 400 and GLE 43 AMG has a different sensor configuration to the 4.0-litre biturbo M177 found in the GLE 63 AMG. Sensors are matched to the exhaust manifold layout and ECU calibration for that specific engine, so a sensor from a different petrol engine code is unlikely to be a direct fit even if it looks similar. Always quote your engine code (found on your V5C or the engine bay sticker) when requesting a quote from a breaker.

The W166 GLE ran from 2015 to 2019 and the V167 generation replaced it from 2019 onwards, and these are distinct platforms with different engine families, so the oxygen sensors are not the same parts. Even where a similar petrol engine code carries across the boundary, the sensor connectors, pipe lengths and ECU mappings may differ between generations. Name the generation and engine code to your breaker and ask them to confirm against your specific registration before purchasing.

Trim level — whether AMG Line, Sport, SE or any other — does not affect which oxygen sensor is fitted; what matters is the engine code and model year. A GLE 400 AMG Line and a GLE 400 Sport with the same engine code will use identical oxygen sensors. The only cosmetic difference you might notice on a used sensor from a higher trim car is superficial, and it has no bearing on fitment or function.

The 2015 to 2019 period all falls within the W166 generation, so sensors from within that generation are more likely to be compatible provided the engine code matches exactly. However, emissions calibration updates and running changes during a production run mean you should still confirm the engine code and any part numbers with the breaker rather than assuming all W166 petrol sensors are interchangeable. Giving the breaker your full registration lets them cross-reference the correct sensor position (pre-cat or post-cat) for your exact build.

Yes, the Euro standard matters because Euro 6 brought tighter emissions thresholds and in some cases revised exhaust and sensor strategies compared to Euro 5 — fitting a sensor from the wrong emissions era could cause warning lights or an MOT emissions failure. The W166 GLE straddled the Euro 5 to Euro 6 transition during the mid-2010s, so two cars of the same model year could in principle be on different standards depending on build date. Confirm your car's Euro standard (visible on some V5Cs or via a free online checker using your registration) and share it with the breaker when requesting a quote.