Used Hyundai i30 Engine

The i30 has run across three distinct generations: Mk1 (FD) from 2007 to 2012, Mk2 (GD) from 2012 to 2017 with a facelift in 2015, and Mk3 (PD) from 2017 onwards – engines are not interchangeable between generations. Within a generation, the engine code (stamped on the block and listed on your V5 or a VIN check) is the single most reliable guide, as mechanical spec often changed mid-run regardless of the badge on the car. Always give your engine code to the breaker rather than relying on year alone.

The 2014 car sits in the Mk2 (GD) pre-facelift period, while a 2016 car is post the 2015 facelift, so both are within the same Mk2 generation – which is a good starting point. However, ancillary fittings and mounting points can change across a facelift, so you should confirm with the breaker whether a pre-facelift donor engine carries across cleanly to your post-2015 car by quoting them both registration numbers. Matching engine codes between donor and recipient gives the best chance of a straightforward swap.

For a used engine, the trim level – whether that's S, SE, SR, N Line, or Premium – does not determine fitment; what matters is the engine code, fuel type, and gearbox type. An engine from an SE and an engine from an N Line with the same code are mechanically the same unit, though you may find ancillary parts such as brackets or sensors differ cosmetically or in positioning between builds. Confirm the exact engine code match with the breaker and let them cross-reference against your registration to avoid any surprises.

Yes – fuel type is fundamental and a diesel engine cannot be substituted for a petrol unit or vice versa, regardless of generation or year. Within the same fuel type, common Mk2 i30 petrols include the 1.4 and 1.6 GDi and T-GDi units, while diesels ran 1.4 and 1.6 CRDi variants, each with their own engine codes. Always confirm the engine code from your V5 or a VIN check and supply it to the breaker so they can match the correct unit.

ECU pairing and immobiliser coding vary depending on how the engine management system is set up in your specific car, and this is something you must confirm with your fitting garage and the breaker rather than assuming it's a straight swap. A breaker can advise whether the donor engine is supplied with or without its ECU, but whether recoding is needed for your registration is not something that can be stated as a blanket rule. Raise this question before you buy so you can factor any coding work into your budget.

Gearbox type matters for fitment because the engine and transmission are mated components, and the flywheel, mounts, and sometimes ancillary bracketry differ between manual and automatic applications. If your car is an automatic, you should ideally source an engine from another automatic donor, and confirm this with the breaker when you provide your registration and engine code. Mixing transmission types can create complications that make the swap significantly more involved than a like-for-like replacement.