Cheap Fiat 500 Catalytic Converter

Yes, all petrol-engined Fiat 500s have a catalytic converter as part of the exhaust system — it is required to meet emissions regulations. The 500 has been sold in the UK from 2008 onwards in petrol variants including the 1.2, 1.4, and the turbocharged TwinAir engines, and each of these carries a cat. Diesel 500s are far less common in the UK but do exist, and those use a different emissions setup including a diesel particulate filter (DPF) rather than a traditional petrol cat.

The Fiat 500 received a significant update around 2015–2016 which brought Euro 6 emissions compliance, and this is a meaningful boundary for exhaust parts — a cat sourced from a pre-facelift Euro 5 car may not meet the emissions standard required for a post-2015 registered vehicle and could cause an MOT failure. Engine codes stayed similar across the range, so parts can look physically compatible while still being from the wrong emissions era. Always confirm with the breaker that the cat they have matches your car's registration and Euro emissions standard, not just the engine size.

For standard petrol 500s, trim level — whether Pop, Lounge, Colour Therapy or any other — does not affect which catalytic converter was fitted; what matters is the engine code and the emissions era of the donor vehicle. The Abarth 500 is a different case, as it uses the turbocharged 1.4 T-Jet engine and will have a different exhaust system to a standard 1.2 or TwinAir 500, so an Abarth cat is not interchangeable with a standard model cat. Always confirm the engine code with the breaker against your registration to be sure.

No — the 0.9 TwinAir is a turbocharged two-cylinder engine and its exhaust system, including the catalytic converter, is specific to that engine and different from the naturally aspirated 1.2 eight-valve unit. Even though both are small-capacity petrol engines, you should not assume the cats are interchangeable. Confirm the engine code with the breaker and check it matches your registration before purchasing.

A 2018 Fiat 500 would be built to Euro 6 standards, while a 2013 car sits in the Euro 5 era, and catalytic converters are emissions-specific parts, so fitting a newer-spec cat to an older car — or vice versa — is uncertain territory even if the engine code appears the same. The physical fitment may or may not work, and there are implications for emissions compliance and MOT. This is strong confirm-with-breaker territory — give the breaker both registrations and ask them to verify compatibility before you buy.

Used cats from breakers are a legitimate and often cost-effective option for replacing a failed or damaged converter, and reputable UK breakers will supply parts with the correct engine code and emissions era details. However, because cats are a targeted theft item, do make sure the breaker can confirm the part's provenance and that it matches your vehicle's registration details. Always confirm the specific interchange with the breaker, as even small differences in engine code or emissions standard can affect fitment and MOT compliance.