BMW i5 Lambda Sensor Replacement Parts

No — the BMW i5 is a fully electric vehicle with no internal combustion engine, so it has no exhaust system, no catalytic converter, and no lambda (oxygen) sensor whatsoever. Lambda sensors are only fitted to petrol and diesel engines to measure exhaust gas oxygen content and regulate fuelling, none of which applies to a battery-electric drivetrain. If you own an i5 and have been quoted for a lambda sensor, it is worth double-checking whether the part lookup has confused your vehicle with the combustion-engined BMW 5 Series (G60 platform), which does use lambda sensors. A UK breaker specialising in BMW will be able to point you in the right direction once you confirm your exact registration.

Almost certainly yes — the i5 shares its G60 body shell with the current 5 Series (launched 2023), and many parts catalogues list them together, which can cause confusion. The petrol and mild-hybrid variants of the G60 5 Series do carry lambda sensors, whereas the i5 electric variants do not. If your vehicle has a registration that brings up i5 but a parts site is returning lambda sensor results, it is likely cross-referencing combustion-engine data from the same platform. Confirm your exact model designation (i5 eDrive40, i5 M60 etc.) with the breaker so they can verify there is no mix-up before any purchase.

Because the i5 is fully electric, there is no exhaust-related part to replace in the way a combustion car would require. If you have a fault code or warning light, it is most likely related to the high-voltage battery system, inverter, motor, or associated sensors rather than anything exhaust-based. A BMW-approved diagnostic check (or a specialist EV independent) will identify the correct component, as standard OBD lambda codes simply do not apply to this vehicle. Searching for the specific fault code rather than a part name is the best starting point before approaching a breaker.

No parts from a combustion 5 Series lambda sensor system would fit or serve any purpose on an i5, as the i5 has none of the exhaust, engine management, or fuelling hardware those sensors connect to. The 530e plug-in hybrid does carry lambda sensors as part of its petrol engine management, but that system is entirely absent on the i5. If you have established that you do need a lambda sensor and your vehicle is actually a combustion or hybrid 5 Series rather than an i5, confirm the precise engine code and registration with the breaker, as lambda sensor fitment on the G60 range is closely tied to engine variant and emissions specification.