Second Hand Peugeot 108 Catalytic Converter

Yes, all Peugeot 108 petrol variants were fitted with a catalytic converter as standard — it forms part of the exhaust system and is required for emissions compliance and MOT. The 108 was only ever sold in the UK with petrol engines, so every example on the road will have a cat. There was no diesel variant of the 108 sold in the UK, so there is no DPF to consider on this model.

The Peugeot 108 ran from 2014 to 2021 with a facelift introduced in 2018, and while the engine lineup remained centred on the 1.0 VTi and 1.2 VTi units throughout, emissions certification can differ across that boundary. A cat from a pre-facelift car may not meet the same Euro standard as a post-2018 model, which could cause an MOT failure even if it physically fits. Confirm with the breaker exactly which engine code and emissions standard the donor cat was certified to before buying.

Yes, engine code is the most important thing to match — the 108 was available with a 1.0-litre three-cylinder (engine code 1KR) and a 1.2-litre three-cylinder (engine code HMZ/EB2), and the cats for these engines are not interchangeable. Give the breaker your exact engine code, which you can find on your V5C or by asking a dealer to check against your registration. Never assume a cat will fit just because the car looks the same externally.

No — trim level makes no difference to catalytic converter fitment on the Peugeot 108. Whether your car is an Access, Active, Allure, or Roland Garros edition, the cat is determined entirely by the engine code and the emissions standard the car was built to, not by how the car is equipped inside or out. You may find cosmetic differences around the exhaust exit on some trim specifications, but the cat itself is unaffected by trim.

The Peugeot 108, Toyota Aygo, and Citroën C1 are sister cars built on the same platform and sharing the same engine family, so there is a reasonable chance of overlap — but whether a specific used cat from one of those models will interchange with your 108 is strong confirm-with-breaker territory. Match engine codes carefully and ask the breaker to verify the part number against your registration before purchase. Fitting a cat from the wrong variant or emissions era could result in an MOT failure.

Not necessarily — the cat must match the emissions standard the vehicle was originally certified to, and fitting one from an earlier Euro standard could result in a fail even if the part physically bolts on. The 108 spans both Euro 5 and Euro 6 certification depending on year of manufacture, so this is not a trivial difference. Always confirm with the breaker that the donor cat came from a vehicle of the same engine code and equivalent emissions era as yours.