Second Hand Vauxhall Grandland X Catalytic Converter

Yes, all Vauxhall Grandland X variants have a catalytic converter of some form — petrol engines use a conventional catalytic converter, while diesel engines use a catalytic converter as part of a wider exhaust aftertreatment system that also includes a diesel particulate filter (DPF). The Grandland X was sold in the UK from 2017 onwards, and all engine options across that range were required to meet at least Euro 6 emissions standards, so every variant left the factory with emissions control equipment fitted. If you are unsure exactly which system your car has, check your V5C or confirm the engine code with a breaker before ordering.

The Grandland X received a significant facelift in 2019, which also brought updated engine and emissions equipment, so a pre-facelift unit (2017–2019) and a post-facelift unit (2019 onwards) should be treated as separate fitment generations even though the cars may look similar underneath. Whether a specific catalytic converter crosses that 2019 boundary is strong confirm-with-breaker territory — give the breaker both registration numbers and ask them to check engine codes and part numbers against each other before purchasing. Assuming a pre-facelift and post-facelift cat are interchangeable is a risk not worth taking, particularly with MOT emissions testing in mind.

No, trim level does not affect catalytic converter fitment on the Grandland X — SE, SE Nav, Sport Nav, Elite, Elite Nav, and Ultimate are all cosmetic and equipment grades built on the same engine and exhaust architecture. What matters is the engine code and fuel type (petrol or diesel), not whether the car has leather seats or a larger infotainment screen. When contacting a breaker, quote your registration and engine code rather than your trim name, and you will get a more useful answer.

No, the 1.2 turbo petrol and the 1.6 turbo petrol are different engines with different exhaust systems, and their catalytic converters are not the same part. Always quote your engine code to the breaker — it will be on your V5C and is the most reliable way to ensure you are quoted for the correct unit. Do not assume that because two cars are both petrol Grandland Xs the cats are interchangeable.

No — petrol and diesel exhaust aftertreatment systems are completely different and are not interchangeable under any circumstances. A diesel Grandland X uses a catalytic converter combined with a DPF and other diesel-specific components, while a petrol model uses a standalone three-way catalytic converter designed for petrol combustion chemistry. Fitting the wrong type would cause an immediate MOT failure and could damage the engine management system.

Catalytic converters do degrade over time and mileage as the precious metal substrate inside wears, so a used cat from a very high-mileage donor car may still pass MOT when first fitted but could fail sooner than one from a lower-mileage vehicle. Ask the breaker for the donor car's mileage and, where possible, whether the car was scrapped for a reason unrelated to the engine or exhaust. Confirming the engine code matches yours remains the most important step before any other consideration.