Used Mazda 6 Engine

The Mazda 6 ran across three main generations: first gen (GG/GY) 2002–2007, second gen (GH) 2008–2012, and third gen (GJ) 2013–2024, with a facelift in 2015. Engines within the same generation are the strongest starting point for compatibility, but the engine code printed on your V5 or revealed by a VIN check is the single most important detail — a matching code from a donor car is far more reliable than matching year alone. Always confirm the exact code with your breaker before ordering.

2012 sits in the second-gen GH (2008–2012) and 2013 is the start of the third-gen GJ, so you are crossing a generation boundary — these are substantially different platforms with different engine families. A swap across that boundary is very unlikely to be straightforward, and you should not assume compatibility based on year alone. Route this directly to your breaker with both registration numbers so they can check the engine codes on each side.

Trim level — whether SE, Sport, Executive, or any other — does not determine which engine was fitted; what matters is the engine code, fuel type, gearbox type (manual or automatic), and the production year within the generation. Mazda fitted the same engine variants across multiple trims in the same model year, so a Sport donor and an SE recipient can share an engine provided the codes match. Bear in mind the breaker's donor car may differ in interior specification, but that has no bearing on whether the engine itself will fit.

Yes — petrol and diesel engines are entirely different units and are not interchangeable under any circumstances. Within each fuel type there are also multiple variants across the generations, for example the 2.2-litre SkyActiv-D diesel used in third-gen GJ cars is a completely different engine to the 2.0-litre diesels found in first and second-gen cars. Always confirm you are quoting for the correct fuel type and match the engine code exactly.

It can do, because some engine variants were paired exclusively with a manual or an automatic gearbox and may have differences in the flywheel, sensor locations, or ancillary mounts depending on which transmission they drove. The safest approach is to source an engine from a car with the same gearbox type as yours and to confirm with your breaker whether any ancillary components need to transfer across. Matching the engine code remains the primary check, but gearbox type should be stated when you request a quote.

The third-gen GJ received a facelift in 2015, and while the core engine families carried over, there can be mid-production changes to ancillary components, sensor configurations, and engine mounts that are not always well documented. Name the facelift year (2015) when speaking to your breaker and give them your exact engine code from the V5 or a VIN check, as this lets them identify a closely matched donor. Whether a pre-facelift or post-facelift unit will bolt straight in without modification is something your breaker will need to confirm against your specific registration.