Brand New G4NC 2.0L GDI Petrol Long Engine for Hyundai i30

About this engine

For a lot of Australians, the Hyundai i30 is simply the car that gets everything done: the commute, the shopping, the airport run, the first car handed down to a new driver. i30 variants that came from the factory with the G4NC, the 2.0L GDI petrol four from Hyundai’s Nu engine family, have proven willing workers, but no engine lasts forever, and a worn G4NC does not have to mean the end of an otherwise honest hatch.

This is a brand-new G4NC 2.0L GDI petrol long engine for the Hyundai i30, built to OEM fitment specification, internally upgraded where the original design was weakest, and hot and cold tested after assembly before it is crated.

Included with every purchase: a 12-month or 50,000 km parts warranty, freight-free delivery anywhere in Australia, and a VIN check before you pay so the engine is confirmed against your exact i30. Ring 1300 200 320 to have yours checked.

The i30's G4NC up close: design and common problems

Hyundai groups its mid-sized four-cylinder petrol engines into the Nu family, and the G4NC is the family's 2.0-litre direct-injection engine. Its siblings include the port-injected G4NA at the same capacity and the 1.8-litre G4NB, but the G4NC stands apart for its GDI system, which delivers fuel straight into the combustion chamber under high pressure rather than into the intake port.

For an i30 driver, that translated into keen response around town and good economy on the open road, in a package that revs cleanly and pulls smoothly. Camshaft drive is by chain, so the engine never asks for the periodic timing-belt replacement that older designs required.

What should an owner know about the design's ageing habits? Two things are well documented. Direct injection means the intake valves are never rinsed by fuel, so carbon can gradually settle on them across long distances, a trait shared by GDI engines industry-wide. More seriously, Nu-family engines at high kilometres, the G4NC among them, have a widely reported pattern of oil consumption creeping upward, with ring and bearing wear developing underneath it.

By the time an i30 is drinking a litre of oil between services or knocking on cold start, patch repairs rarely hold. A new long engine replaces every wearing part in one pass, at zero kilometres. This one keeps the fitment specification Hyundai wrote, so everything bolts up as designed, yet inside it the connecting rods, crankshaft, bearings and related parts are a grade above the originals, reinforcing the design where its record says it needed reinforcing.

Getting i30 fitment right

The i30 nameplate stretches across multiple generations and a wide spread of engines, petrol and diesel, port-injected and direct-injected. Two i30s of similar age can hide completely different hardware under the bonnet, so we never sell this engine on the strength of the model name alone.

The rule is simple: this long engine suits i30 vehicles that were originally manufactured with the G4NC 2.0L GDI petrol engine, and your VIN tells us definitively whether yours is one of them. The 17-character number is stamped on the build plate, visible at the base of the windscreen, and printed on your registration certificate. Phone it through on 1300 200 320 or send it in writing, and we will confirm the factory engine before taking payment. No match, no sale, and we will tell you which engine your car actually needs.

Alongside the VIN check, make sure the diagnosis is solid. Heavy oil use, low compression readings, blue exhaust smoke on startup and a load-dependent knock are the classic signs of a worn G4NC bottom end. A compression test and leak-down test at any workshop will confirm the picture in under an hour, and it is far cheaper than replacing an engine that only needed a sensor or a mount.

Once both boxes are ticked, your mechanic can quote the installation with confidence, because everything that bolts to the outside of the old engine carries straight over to the new one.

What you receive and the road back to driving

Your delivery is a crated long engine: the block built up with crankshaft, pistons and connecting rods, and the cylinder head assembled and fitted. Manifolds, injectors, the fuel rail, alternator, starter motor, air-conditioning compressor and the various external sensors are not supplied, because the ones on your current engine transfer across during installation. That is the standard economics of a long-engine swap: you pay for the parts that wear, and reuse the parts that do not.

The engine itself is built to OEM fitment specification with upgraded internals, and then hot and cold tested after assembly. Passing that test means compression, oil pressure and sealing were all verified with the engine actually running at temperature, before crating.

On the warranty: parts are covered for 12 months or 50,000 km, whichever comes first, provided a qualified mechanic performs the installation. A heat tab is fitted to every engine, and because it permanently records any overheat event, damage caused by overheating falls outside the cover. Have your i30's radiator, thermostat and hoses checked at install time and that exclusion should never matter.

Freight is free to any Australian address, workshop deliveries included. The path from here is short: VIN check, order, dispatch, installation, and your i30 is back on its daily rounds with a brand-new heart. The team on 1300 200 320 can walk you through any step.