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Hyundai
Tucson
NX4·
2021-2026
suv-soft
Price (AUD)
$28k-$55k
Body styles
5-door wagon
Drivetrain
Front-wheel drive (2.0 petrol, 1.6 turbo base, base hybrid), On-demand AWD with multi-terrain modes (1.6 turbo, 2.0 diesel, AWD hybrid)
Origin
Korea
Built in
Korea
Overview
The fourth-generation Tucson (NX4) launched in Australia in early 2021 with its bold 'Parametric Jewel' grille and a much bigger, more upmarket cabin, sold across Tucson, Elite and Highlander grades (plus the N Line styling pack). It is a monocoque on-road soft-roader, mechanically twinned with the Kia Sportage NQ5. The Australian engine line-up evolved: at launch you could buy the SmartStream 2.0 'Nu' naturally aspirated petrol (FWD, 6-speed torque-converter auto), the SmartStream 1.6 T-GDi 'Gamma' turbo petrol (7-speed wet dual-clutch, FWD or AWD) and the 2.0 'R-series' CRDi turbo-diesel (8-speed torque-converter auto, AWD only, with multi-terrain Snow/Mud/Sand modes). The diesel was dropped for MY25, and a 1.6 turbo-petrol hybrid (1.6 T-GDi + electric motor, 6-speed torque-converter auto, FWD or AWD) arrived from mid-2024. The single biggest used-buyer caveat is the 7-speed wet DCT behind the 1.6 turbo: it is widely reported for low-speed shudder, hesitation and lurchy take-up, and Hyundai/Kia DCTs have a track record of clutch and mechatronic problems. The 2.0 petrol auto and the hybrid's conventional 6-speed auto are the calmer, lower-risk transmissions. All engines are direct/turbo-charged GDi-family units (the 2.0 Nu is multi-point/GDi depending on build) so carbon and the wider Hyundai GDi oil-consumption reputation are worth checking, and the diesel brings the usual DPF/EGR short-trip concerns. NX4 was also caught up in Hyundai's ABS-module engine-fire recall (carryover risk on early build) and an NX4-specific Forward Collision-Avoidance phantom-braking recall.
Engines & variants
2.0L SmartStream petrol (2.0 GDi/MPi)
Engine
2.0L SmartStream naturally aspirated petrol I4 (Nu family)
Config
I4 NA
Displacement
1999cc
Power
115kW @ 6200rpm
Torque
192Nm @ 4500rpm
Drivetrain
FWD
Economy
8.1 L/100km combined (real-world ~9-10)
Tow (braked)
1600kg
Tow (unbraked)
750kg
Transmission
6AT
Timing chain / belt / gear
Timing chain (no scheduled belt replacement)
Pros
- Conventional 6-speed torque-converter auto - avoids the troublesome DCT entirely
- Simplest, lowest-risk NX4 powertrain - no turbo, no DPF
- Timing chain, no belt to replace
- Cheapest Tucson to buy and run; FWD-only keeps it simple
- 5-year unlimited-km Hyundai warranty on cars sold new
Cons
- Noticeably underpowered in a big body, especially loaded or on hills
- FWD only - no AWD option on the 2.0
- Lower 1600kg braked tow rating than the turbo/diesel
- Direct-injection carbon possible at high km on GDi builds
Known problems
low
GDi intake-valve carbon build-up
On direct-injection (GDi) builds of the Nu engine, carbon can accumulate on the intake valves over time (no port-injection wash), causing rough idle, hesitation or minor misfire at higher km.
Fix: Walnut-blast/intake clean if symptomatic; quality fuel and regular oil changes slow it.
medium
Engine oil consumption (Hyundai GDi tendency)
Hyundai's GDi/SmartStream petrols have a broader reputation for using oil between services; check the level and watch for low-oil or service warnings. Less acute than the older Theta II but worth monitoring.
Fix: Check oil monthly and top up to spec; keep records; an oil-consumption test at a dealer if it drinks heavily under warranty.
low
Reversing brake/auto-hold groan and low-speed driveline shunt
Owners report brake groan and minor driveline shunt at low speed/reverse; usually noise and calibration rather than a fault on the torque-converter auto cars.
Fix: Software update if available; clean/lube caliper slides and anti-squeal shims; generally tolerated.
1.6L T-GDi turbo petrol (7-speed DCT)
Engine
1.6L SmartStream direct-injection twin-scroll turbo petrol I4
Config
I4 turbo
Displacement
1598cc
Power
132kW @ 5500rpm
Torque
265Nm @ 1500-4500rpm
Drivetrain
FWD or on-demand AWD (with multi-terrain modes on AWD)
Economy
7.2-7.7 L/100km combined (real-world ~8.5-9.5)
Tow (braked)
1900kg
Tow (unbraked)
750kg
Transmission
7-speed wet dual-clutch (DCT)
Timing chain / belt / gear
Timing chain (no scheduled belt replacement)
Pros
- Strong, flexible turbo torque from low rpm - the pick for performance
- Available with AWD and multi-terrain modes
- Timing chain, no belt; quick and frugal when cruising
- Highest braked tow rating of the petrols (1900kg)
Cons
- 7-speed wet DCT is widely criticised for low-speed shudder, hesitation and lurch
- DCT clutch/mechatronic repairs are expensive out of warranty
- Direct-injection carbon possible at high km
- Jerky stop-start and crawl behaviour annoys many owners in traffic
Known problems
high
7-speed DCT low-speed shudder, hesitation and lurch
The wet 7-speed DCT is the NX4's signature complaint: shudder or judder pulling away, hesitation then a sudden lurch in stop-go traffic, double-bumping and delayed engagement, sometimes with a metallic clunk between 1st and 2nd. Some dealers dismiss it as 'characteristic'; in worse cases the clutch pack or mechatronic unit fails.
Fix: Apply the latest TCU/DCT software updates; have clutch take-up and engagement logs checked; budget for clutch-pack or mechatronic repair on neglected/out-of-warranty cars. Test-drive extensively in traffic before buying.
medium
DCT overheating / clutch judder in hot or heavy use
The dual-clutch can overheat and judder during prolonged crawling, towing or hot-weather stop-start, accelerating clutch wear and sometimes triggering a transmission warning/limp.
Fix: Software calibration; avoid riding the clutch on hills (use the brake); replace worn clutch packs; verify it is not in derate before purchase.
low
GDi intake-valve carbon build-up
As a direct-injection turbo, the 1.6 can accumulate intake-valve carbon over time, causing rough running and reduced response.
Fix: Walnut-blast/intake clean if symptomatic; quality fuel and regular oil changes help.
2.0L CRDi turbo-diesel (8-speed auto, AWD)
Engine
2.0L R-series common-rail VGT turbo-diesel I4 with DPF
Config
I4 turbo diesel
Displacement
1995cc
Power
137kW @ 4000rpm
Torque
416Nm @ 2000-2750rpm
Drivetrain
On-demand AWD (multi-terrain Snow/Mud/Sand)
Economy
6.3 L/100km combined (real-world ~7-8)
Tow (braked)
1900kg
Tow (unbraked)
750kg
Transmission
8AT
Timing chain / belt / gear
Timing chain (no scheduled belt replacement)
Pros
- Strong 416Nm torque - effortless touring and the best for towing/loads
- Conventional 8-speed torque-converter auto, not the DCT
- AWD with multi-terrain modes as standard; lowest highway fuel use
- Timing chain, no belt; long range from a tank
Cons
- DPF/EGR clogging on short urban trips is the classic diesel risk
- Discontinued after MY24 - thinner dealer diesel focus going forward
- Diesel injector and turbo repairs are expensive
- AWD-only and heaviest variant - worst around town if short-tripped
Known problems
high
DPF clogging and EGR / intake carbon (short-trip use)
Short urban trips stop the diesel particulate filter completing regeneration, leading to blockages, forced regens, EGR and intake soot, warning lights and eventually limp/derate. A classic small-diesel-in-an-SUV problem when the car only does town runs.
Fix: Do regular 20-30 min highway runs to allow regen; clean EGR/intake; replace the DPF on heavily blocked town cars; suit the diesel to touring buyers, not short-trip-only use.
medium
Diesel injector and turbo (VGT) faults
Common-rail injectors can develop leaks or fouling and the variable-geometry turbo can suffer actuator/vane problems, causing rough running, smoke, boost faults and power loss at higher km.
Fix: Diagnose and replace affected injector(s) or turbo/actuator; insist on full diesel service history before buying.
medium
Engine oil dilution / DPF regen oil rise
Like most modern diesels, interrupted DPF regens can wash fuel into the sump, raising and thinning the oil and accelerating wear if ignored.
Fix: Change oil on time (or early for short-trip cars), monitor the oil level, and allow regens to complete with regular longer drives.
1.6L T-GDi Hybrid (6-speed auto)
Engine
1.6L SmartStream T-GDi turbo petrol I4 with electric motor and 1.49kWh drive battery (full hybrid)
Config
I4 turbo + electric motor (HEV)
Displacement
1598cc
Power
172kW combined (system)
Torque
367Nm combined (system)
Drivetrain
FWD or on-demand AWD
Economy
5.3-6.0 L/100km combined (real-world ~5.5-7)
Tow (braked)
1650kg
Tow (unbraked)
750kg
Transmission
6AT
Timing chain / belt / gear
Timing chain (no scheduled belt replacement)
Pros
- Conventional 6-speed torque-converter auto, NOT the DCT - much smoother in traffic
- Strong 172kW/367Nm combined system; best fuel economy in the range
- Available FWD or AWD; arrived mid-2024 as the new flagship powertrain
- Newest, most refined Tucson drivetrain with the longest remaining warranty
Cons
- Newest variant - limited long-term reliability data and higher used prices
- Hybrid drive-battery and inverter repairs are expensive out of warranty
- Still a direct-injection turbo underneath (carbon/oil monitoring applies)
- Heavier than the 2.0 petrol; AWD adds further weight
Known problems
medium
Hybrid drive-battery / inverter degradation
As with any full hybrid, the high-voltage drive battery and power electronics can degrade or fault with age and high km; the NX4 hybrid is too new in Australia for a firm failure rate, but battery/inverter repairs are costly once out of warranty.
Fix: Confirm the high-voltage battery warranty status; have a hybrid-health check on older/high-km examples; keep to dealer hybrid servicing.
low
GDi intake-valve carbon build-up
The 1.6 turbo petrol side of the hybrid is direct-injection and can build intake-valve carbon over time, like the standalone 1.6 T-GDi.
Fix: Walnut-blast/intake clean if symptomatic; quality fuel and regular oil changes help.
low
12V auxiliary battery and hybrid stop-start niggles
Hybrids are sensitive to a weak 12V auxiliary battery, which can cause no-start, warning lights and stop-start/ready-mode glitches even when the drive battery is fine.
Fix: Replace a tired 12V battery with the correct spec; check charging and parasitic draw if symptoms persist.
Common problems (all variants)
high
ABS module engine-fire recall (carryover risk)
Hyundai recalled tens of thousands of Tucsons (spanning into early NX4-era build) over an ABS/HECU module that can short-circuit when exposed to moisture and start an engine-bay fire, with owners advised to park outside until rectified. Confirm any related ABS fuse/repair kit recall has been completed on the VIN.
Fix: Run the VIN through Hyundai Australia / Product Safety recall checks; have the free ABS fuse repair kit fitted if outstanding.
medium
Forward Collision-Avoidance phantom braking recall (NX4)
An NX4-specific recall covered the Forward Collision-Avoidance Assist system braking unexpectedly (phantom braking) for no reason, a safety and rear-end-crash risk addressed by a software update.
Fix: Confirm the FCA/ADAS software-update recall has been completed; have the dealer flash the latest software if not.
low
Infotainment and ADAS software glitches
The big touchscreen, wireless CarPlay/Android Auto and driver-assist systems can freeze, reboot, drop connection or throw spurious warnings; many issues are resolved by software updates rather than hardware.
Fix: Apply the latest infotainment/ADAS software updates; replace the head unit only if hardware-faulty.
low
Knock/rattle and minor electrical niggles
Owners report interior squeaks/rattles, occasional door-lock and sensor faults, and various minor electrical gremlins typical of a feature-heavy modern SUV.
Fix: Have rattles traced and trim re-clipped; address faulty sensors/modules individually; software updates where applicable.
low
Paint chipping and front-end stone damage
Like many modern Hyundais, the paint can chip on the bonnet and front bumper, and the large grille/sensor array is exposed to stone damage on Australian roads.
Fix: Paint protection film up front; touch-up or respray affected panels.