Cheap Mercedes-Benz CLE Oxygen Sensor

Yes, the CLE (launched 2023 as a two-door coupé and cabriolet replacing both the C-Class Coupé and E-Class Coupé) uses petrol engines that do have lambda/oxygen sensors as part of the exhaust management system. However, the CLE range also includes diesel and mild-hybrid petrol variants, and the specific number and position of sensors will differ by engine code, so you need to confirm which engine your car has before sourcing a used sensor. Diesel variants use NOx and other exhaust sensors rather than a traditional wideband oxygen sensor, so confirm with the breaker exactly what your engine requires.

The CLE launched in 2023 and as of 2025 has not had a facelift, so sensors from the same engine code across the 2023–2025 production run are likely to be compatible. However, fitment depends primarily on engine code rather than model year, so always quote your engine code to the breaker rather than relying on year alone. Never assume fitment without the breaker confirming against your registration.

Trim level — whether your CLE is Avantgarde, AMG Line, or a full AMG 53 variant — does not in itself determine oxygen sensor fitment; what matters is the engine code. The AMG 53 uses a different engine (the M256 straight-six mild-hybrid) compared with the four-cylinder variants, so the sensor type and position will differ, but that difference is down to the engine, not the AMG Line badging on lesser models. Quote your engine code and registration to the breaker and they will confirm the correct sensor.

Petrol CLE engines typically have at least two oxygen sensors: an upstream (pre-cat) sensor and a downstream (post-cat) sensor, and some configurations may have additional sensors. The upstream and downstream sensors can look similar but are calibrated differently and are not interchangeable, so tell the breaker which position you need — upstream or downstream — along with your engine code. If you are unsure which has failed, your diagnostic fault code (e.g. P0136 or P0141) will indicate the bank and position.

No — diesel and petrol exhaust sensor technologies are fundamentally different; diesel variants use NOx sensors and other emissions-related sensors rather than the wideband lambda sensors found on petrol engines, and they are not interchangeable. Always make clear to the breaker whether your CLE is petrol or diesel and provide your engine code so they can supply the correct part. Fitting the wrong sensor type will not work and could cause MOT failure.

The CLE shares architecture with the W206 C-Class and shares engines with both the C-Class and outgoing W213 E-Class, so there is a reasonable chance sensors from matching engine codes across those models will interchange. However, whether a specific sensor from a specific year of C-Class or E-Class actually fits your CLE depends on the exact engine code and emissions calibration, and this is something you must confirm with the breaker against both registrations rather than assume from platform sharing alone.