Used Mercedes-Benz CLA Catalytic Converter

This crosses an important boundary: the CLA (C117) ran from 2013 to 2019, with a facelift in 2016, and crucially the 2016 facelift also brought Euro 6 emissions compliance to most engines, whereas earlier cars were Euro 5. A cat from a 2014 car may physically resemble the later part but could be calibrated to a different emissions standard, which risks failing MOT. Name the engine code from both cars when you speak to the breaker, and confirm the emissions specification matches before buying.

The CLA 200 and CLA 220 are both petrol variants but they use different engine codes and states of tune, so the catalytic converter is not necessarily interchangeable even within the same generation. Fitment here follows the engine code, not the model number on the bootlid. Confirm your exact engine code with the breaker against the registration of the donor car before purchasing.

Yes, the CLA diesel variants (such as the CLA 200d and CLA 220d) do have a catalytic converter, typically combined with or positioned alongside a diesel particulate filter (DPF) in the exhaust aftertreatment system. The exact configuration depends on the engine code and emissions generation of your specific car. Because diesel cat and DPF interchange is particularly sensitive to engine code and Euro standard, always confirm the donor car's registration and engine code with the breaker.

No, trim levels like AMG Line, Sport, or Urban do not affect catalytic converter fitment on the CLA — the cat follows the engine code and emissions era, not the trim badge. You can expect the used part to look identical regardless of which trim it came from. What matters is matching the engine code and Euro emissions standard, so focus on those details rather than the trim name of the donor car.

The C117 CLA launched in 2013 so first-generation cars are now well into the age range where dismantlers hold stock, and used cats do come up at breakers. However, because catalytic converters are a high-value theft target, supply from the dismantler network can be variable. It's worth contacting several breakers and being ready with your engine code and registration so they can confirm they have the correct Euro 5-spec unit for your early car.

Yes, this is a genuine risk — a cat from a different emissions era, even if it physically fits, may not meet the output standard your car was originally approved to, and an MOT emissions test could flag it. The 2016 facelift of the C117 CLA brought Euro 6 compliance for most engines, and crossing that boundary with the wrong part is particularly risky. Always confirm with the breaker that the donor car's engine code and Euro standard match your own vehicle's registration before fitting.