Back to catalog
Top issues
15 known problems · 1 high
high
High-pressure fuel pump / fuel control valve recall
2.0L T-GDi turbo petrol (i30 N)
medium
Battery drain / parasitic draw
All engines
medium
Electrical / warning-light faults (BCM, clock spring, ABS)
All engines
Recalls
1 on recordREC-006422
2025-09-01
Defect: The fuel pump impeller may become deformed under certain environmental conditions, interrupting the fuel supply.
Hazard: The engine may stall, resulting in a sudden loss of motive power.
Remedy: Contact an authorised Hyundai dealership to have the fuel pump impeller inspected and replaced, free of charge.
Affected: 18,634 units, i30 (PD), 2020-2021
Official notice: www.vehiclerecalls.gov.au · details checked 2026-09-29
Check a specific car by VIN at vehiclerecalls.gov.au.
At this odometer
See which of this car's known problems are due at that mileage, which should already have been dealt with, and what's coming up.
Generations
Best and worst years for the Hyundai i30 →
Before: i30 GD (2012-2017) →
After: i30 sedan continues; hatch replaced in market by Kona / next-gen small range
Price (AUD)
$15k-$45k
Body styles
5-door hatch, 5-door fastback (i30 Fastback / Fastback N)
Drivetrain
Front-wheel drive (FWD)
Origin
Korea
Built in
Korea
Overview
Australia's perennial small-car favourite and a former top seller, the PD-series i30 hatch arrived in 2017 and ran in various forms through the mid-2020s, sold as Go, Active, Elite, SR/N-Line, Premium and the standalone hot-hatch i30 N. The mainstream bread-and-butter car is the 2.0L Nu MPi/GDi petrol (Go/Active) - cheap, simple, naturally aspirated and genuinely reliable, with chain timing and an excellent five-year warranty backing it. A 1.6L CRDi turbo diesel was offered in the early years (roughly 2017-2018) before being quietly dropped as diesel demand in the segment collapsed. The enthusiast's pick is the 1.6L T-GDi turbo (originally SR, later N-Line, 150kW) paired with a slick 7-speed dual-clutch, and at the top sits the genuinely brilliant i30 N with its 2.0L Theta turbo. Each engine has a defining caveat: the 1.6 diesel's DPF/EGR sensitivity to short trips, the dual-clutch's low-speed shudder and clutch-pack wear, and the turbo petrols' direct-injection carbon and oil consumption (plus the well-publicised i30 N high-pressure fuel-pump recall). As a used buy the i30 is one of the safer small cars going, but the engine and gearbox you choose matters - and capped-price-service history is worth chasing.
Engines & variants
2.0L Nu MPi/GDi petrol
Engine
2.0L naturally aspirated DOHC D-CVVT petrol I4 (MPi, GDi on some)
Engine code
G4NA / G4NH
Config
I4 NA
Displacement
1999cc
Power
120-124kW @ 6200rpm (110kW in some later/MY tunes)
Torque
201-203Nm @ 4700rpm
Drivetrain
Front-wheel drive (FWD)
Economy
7.4-8.5 L/100km combined
Transmission
6MT, 6AT
Timing chain / belt / gear
Chain-driven
Pros
- Simple, proven naturally aspirated engine - no turbo or DPF complexity
- Chain timing, cheap servicing, runs on 91 RON
- Conventional 6-speed torque-converter auto (no dual-clutch shudder)
- Strong parts/dealer support and 5-year warranty backing
Cons
- Some examples consume oil between services - check the level regularly
- Modest performance; the 6-speed auto blunts it further
- GDi (direct-injection) versions can build intake carbon over time
- Not as economical as the turbo or diesel for the size
Known problems
medium
Oil consumption / engine wear (Nu family)
Like several Hyundai/Kia engines of the era, some 2.0 Nu units use more oil than expected between services - owners have reported needing a litre or two added, with rough idle or noise in worse cases tied to ring/bore wear.
Fix: Check oil regularly between services, keep to the schedule and use the correct grade; document any consumption and address under warranty where eligible.
low
Intake carbon build-up (GDi)
Direct-injection (GDi) variants can accumulate carbon on the intake valves over time, causing slightly rough running or a small power/economy loss.
Fix: Intake/walnut-blast clean if symptomatic; quality fuel and regular oil changes slow it.
1.6L CRDi turbo diesel
Engine
1.6L common-rail turbo diesel I4 with DPF
Engine code
D4FB / D4FE
Config
I4 turbo
Displacement
1582cc
Power
100kW @ 4000rpm
Torque
280-300Nm @ 1500-2750rpm
Drivetrain
Front-wheel drive (FWD)
Economy
4.5-5.6 L/100km combined
Transmission
6MT, 7DCT
Timing chain / belt / gear
Chain-driven (early D4FB); belt-driven on later Smartstream D4FE
Pros
- Excellent real-world economy and long touring range
- Strong low-down torque - relaxed highway and loaded driving
- Available with 7-speed dual-clutch or 6-speed manual
- Only offered briefly, so survivors are usually well kept
Cons
- DPF disagrees with short urban-only trips - regen needs highway running
- EGR and intake soot are the usual common-rail diesel maintenance items
- Dual-clutch versions add the DCT low-speed shudder risk
- Diesel commands a premium to buy and is rare in this body now
Known problems
medium
DPF clogging from short trips
The diesel particulate filter needs sustained driving (roughly 20+ minutes at highway speed) to complete a regeneration; mostly-urban, short-trip use lets soot accumulate until the DPF blocks and triggers warnings or limp mode.
Fix: Regular highway runs to allow regen; forced regen or professional DPF clean if blocked; replacement in severe cases.
medium
EGR / intake carbon build-up
Soot accumulation in the EGR valve and intake is the classic small common-rail diesel issue, causing rough running, codes or limp mode.
Fix: EGR and intake clean; quality oil and fuel, plus longer drives, slow recurrence.
medium
Injector wear at higher km
Common-rail injectors can wear at higher mileage, causing hard starting, smoke and rough idle.
Fix: Injector test and replacement by a diesel specialist; good filtration and fuel quality help.
1.6L T-GDi turbo petrol (SR / N-Line)
Engine
1.6L turbocharged direct-injection DOHC petrol I4
Engine code
Config
I4 turbo
Displacement
1591cc
Power
150kW @ 6000rpm
Torque
265Nm @ 1500-4500rpm
Drivetrain
Front-wheel drive (FWD)
Economy
7.0-7.7 L/100km combined
Transmission
6MT, 7DCT
Timing chain / belt / gear
Chain-driven
Pros
- Genuinely quick and flexible - the sweet spot of the range
- Slick 7-speed dual-clutch (or rare manual) and chain timing
- Warm-hatch feel without i30 N running costs
- Well-equipped SR/N-Line trims with good resale
Cons
- 7-speed dual-clutch can shudder/hesitate at low speed and in traffic
- Direct injection builds intake carbon over time
- Recommends 95/98 RON for best results - higher fuel cost
- DCT clutch packs are a wear item at high km
Known problems
medium
7-speed dual-clutch (DCT) low-speed shudder / jerk
The dry 7-speed dual-clutch can shudder, hesitate or jerk when taking off and in stop-start traffic; software recalibration helps many cars, but worn clutch packs eventually need replacement, and the unit can heat-soak in prolonged crawling.
Fix: Apply latest TCU/clutch software updates first; clutch-pack replacement if worn. Test drive in traffic before buying and seek service history.
low
Intake valve carbon build-up (T-GDi)
Direct injection leaves no fuel washing the intake valves, so carbon accumulates over time, causing slight roughness or power loss.
Fix: Walnut-blast/intake clean if symptomatic; regular oil changes and a catch-can help slow it.
low
Oil consumption on some examples
Some turbo-petrol examples use a little oil between services; left unchecked, low oil accelerates turbo and engine wear.
Fix: Check oil between services; keep levels correct and to schedule.
2.0L T-GDi turbo petrol (i30 N)
Engine
2.0L turbocharged direct-injection DOHC petrol I4 (TD04 turbo)
Engine code
G4KN
Config
I4 turbo
Displacement
1998cc
Power
202-206kW @ 6000rpm (up to 206kW post-facelift)
Torque
353-392Nm @ 2100-4700rpm (overboost)
Drivetrain
Front-wheel drive (FWD, electronic LSD)
Economy
8.5-10.5 L/100km combined (much higher when driven hard)
Transmission
6MT, 8DCT
Timing chain / belt / gear
Chain-driven
Pros
- One of the best-driving hot hatches of its era - genuine enthusiast car
- Strong, tuneable Theta turbo with e-LSD and adjustable modes
- Choice of cracking 6-speed manual or quick 8-speed wet DCT (facelift)
- Chain timing and a strong following with great parts/tuning support
Cons
- Subject to the high-pressure fuel-pump recall (sudden stall risk if unfixed)
- Direct-injection carbon and some oil consumption - check levels often
- TD04 turbo and engine punished by track use and low oil
- High consumables (tyres, brakes, fuel) when driven as intended
Known problems
high
High-pressure fuel pump / fuel control valve recall
A manufacturing defect in the high-pressure fuel pump (and a related fuel control valve issue) could let excess fuel into the pump, causing the engine to stall and suddenly lose drive. Thousands of 2017-2022 i30 N (and related Kona N) cars were recalled in Australia.
Fix: Confirm the relevant Hyundai recall(s) have been completed by VIN before purchase; have any outstanding work done at a dealer (free under recall).
medium
Oil consumption / engine wear (Theta II)
The Theta II family is known for oil consumption and, in worse cases, bearing/ring wear - the risk rises sharply with hard track use and missed oil changes.
Fix: Check oil frequently, change oil more often than the book (especially if tracked), and use the correct synthetic; document consumption for warranty.
low
Intake carbon and turbo/PCV issues
Direct injection causes intake-valve carbon, while EGR/PCV faults can add to carbon and pressure issues; the TD04 turbo suffers if oil is neglected.
Fix: Intake clean if symptomatic, maintain PCV/EGR, and keep oil fresh to protect the turbo.