Hyundai i30 Replacement Engine Guide: FD, GD and PD Engine Codes Explained

The Hyundai i30 is one of the most common cars on Australian roads, and one of the most common engine enquiries we get. It is also one of the easiest to get wrong, because across three generations Hyundai fitted at least six different petrol engines to it, and two of them look identical from the outside. This guide lists every i30 engine by generation, what tends to fail on each, and how to be certain you are ordering the right brand new replacement.

i30 engines by generation

The important thing this table shows is that model year is not enough. A 2015 i30 could have a 1.4, a 1.6 GDI, a 1.8 or a diesel. Our guide to finding the engine number on a car shows where the code is stamped, and the Hyundai engine code guide explains what the letters mean.

FD i30 (2007-2012): 2.0 G4GC

The FD’s 2.0 litre G4GC is a port-injected Beta II engine with a timing belt. It is a simple, tough engine whose main enemies are age and skipped belt changes. A snapped belt on an interference engine bends valves, and by now most FDs are on their second or third belt. If yours has valve damage or a worn bottom end, a brand new G4GC is a straightforward swap. We supply the G4GC for the Elantra HD and Tucson JM; the i30 FD unit is the same family, so call with your VIN and we will confirm the correct variant.

GD i30 (2012-2017): G4FA, G4FD and G4NB

This is the generation where confusion starts. Three petrol engines, and the 1.6 and 1.8 badges were not always on the boot.

1.4 G4FA (base Active, manual): a small Gamma MPI engine, timing chain, very few known faults beyond oil consumption on high-kilometre cars. Brand new: G4FA 1.4 engine for i30 2011-2016.

1.6 G4FD GDI: the direct-injection Gamma. Being GDI, it builds carbon on the intake valves and is harder on its high-pressure fuel pump than the MPI engines; a rough cold idle and hesitation are the usual signs. Our GDI vs MPI guide explains why. Brand new: G4FD 1.6 GDI engine for i30 2012-2017.

1.8 G4NB MPI: the most common GD engine in Australia and the one with the most enquiries. The Nu family is known for oil consumption that, left unchecked, leads to bearing and ring damage. A G4NB that has been run low is the classic case for replacement rather than repair. Brand new: G4NB 1.8 long engine for i30 GD 2012-2017.

PD i30 (2017-2023): G4NC, G4FJ and G4KH

2.0 G4NC GDI (Active, Elite, Premium): the direct-injection 2.0 Nu. Same oil-consumption watch as the G4NB plus GDI carbon. It is the volume engine of the PD range and the one we ship most. Brand new: G4NC 2.0 GDI long engine for i30. Our G4NC buyer guide covers the variants.

1.6 T-GDI G4FJ (SR, N Line): the turbocharged Gamma. Strong and quick, but a turbo GDI engine that has been run on stretched oil intervals suffers turbo bearing wear, carbon build-up and, in the worst cases, piston damage. Brand new: G4FJ 1.6 turbo long engine for i30 PD 2018-2022.

2.0 T-GDI G4KH (i30 N): the performance Theta II turbo. Enthusiast cars get driven hard, and a G4KH that has spun a bearing or dropped a ring land on a tuned car is a replacement job. Brand new: G4KH 2.0 turbo engine for i30 2018-2023.

Long engine or short engine?

Most of our i30 engines are supplied as long engines – block, crank, pistons, head, valvetrain and timing assembled and tested – so your mechanic transfers the intake, exhaust, injectors, sensors and ancillaries from the old engine. That is the fastest, lowest-risk way to replace an engine. If you are unsure what comes across, our guide on long engine vs short engine spells it out, and how heavy is a car engine covers the practical side of freight and lifting.

Confirming fitment before you order

Every i30 engine we sell is matched to your VIN before it leaves. Model year, badge and even the engine code alone are not always enough, because Hyundai revised heads, sumps and sensor positions mid-generation. The process is in how to confirm Hyundai engine fitment. Send us the VIN and the engine code, and we do the rest.

What you get with a brand new i30 engine

• Brand new OEM-spec engine, never used, never repaired
• Hot and cold tested before dispatch, with a heat tab fitted
• VIN-checked fitment
• Free freight anywhere in Australia – see how crate engine delivery works
• 12-month or 50,000 km parts warranty

Whether a brand new engine is the right choice for your car depends on its age, value and how long you plan to keep it. A reconditioned or good used engine can suit an older car; a brand new engine suits a car you want to keep for years without wondering about its history. We laid the trade-offs out fairly in new vs reconditioned engines in Australia.

Fitting and running in

An i30 engine swap is a one to two day job for a competent workshop. The old engine’s failure cause has to be fixed first – a blocked PCV, a faulty oil cooler, a contaminated intake – or the new engine inherits it. Our guides on common crate engine installation errors and how to run in a new engine cover the first 1,500 km.

Frequently Asked Questions

Which i30 engine is the most reliable?

The 1.4 G4FA and 2.0 G4GC have the fewest known issues. The 1.8 G4NB and 2.0 G4NC are fine when the oil level is watched. The turbo engines reward regular servicing and punish neglect.

Can I put a 2.0 G4NC in a GD i30 that had a 1.8 G4NB?

Not as a simple swap. The engines share a family but differ in injection, ECU, wiring and mounts, and changing engine type has registration implications – see is it legal to put a different engine in your car. Replace like with like.

How much does a new i30 engine cost?

Prices are on each product page and range from the 1.4 and 1.6 engines at the lower end to the 2.0 turbo at the top. Freight is free Australia-wide. Our Hyundai engine cost guide gives the wider picture.

Do you ship to my mechanic?

Yes. Most customers have the engine delivered straight to their workshop. Call 1300 200 320 with your VIN and engine code, or browse the full Hyundai engines range.

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