Hyundai i20 GB
Weaknesses, engine ratings and buying advice
The Hyundai i20 GB (2014–2020) is a solid supermini — same platform as Kia Rio. Affordable, reliable, 5-year warranty.
Engine choice: G3LC (1.0 T-GDi, 74–88 kW) — best engine, turbo three-cylinder, timing chain. DCT on 1.0 T-GDi: can judder in crawl — known Hyundai/Kia issue.
Test-drive checklist: DCT city launch (judder?), 1.0 T-GDi turbo response, brakes.
2026 market: 2016–2019 with 30,000 miles $7,700–11,000. Insider pick: 1.0 T-GDi (G3LC) with 5-speed manual.
120 PS
i20 · Benzin
Sensible and forgettable
Decent99–101 PS
1.4L (Kappa) Benzin
5 weaknesses
Good Choice101–120 PS
1.0L T-GDI (Kappa II) Benzin
6 weaknesses
Stay Away!Generations
Engine Overview
The Hyundai i20 GB is available with 5 engine variants — from 75 to 120 hp.
Hyundai's tiniest diesel — three cylinders, barely any power reserve, and a sound that takes getting used to. Cheap to run though.
- !! DPF clogging from 90,000 km
Small diesel 1.4 CRDi with mandatory DPF: short trips prevent regeneration. Engine designed for motorway use; unsuitable as a city car due to frequent DPF problems.
Symptoms: DPF warning light, engine limp mode, power loss, increased fuel consumption. - !! Turbocharger — premature wear on small diesel from 120,000 km
The small turbo of the D3FA runs at very high speeds and is prone to bearing wear with irregular oil changes. Turbo failures on the 1.1L are economically problematic given the engine size vs. repair cost ratio.
Symptoms: Whistling or rattling turbo noise; oil consumption from turbo; power loss; blue smoke plume. - !! Injector wear — small diesel from 130,000 km
Common-rail injectors in the D3FA wear prematurely due to sulphur-rich fuel and high pressures. Repair costs are disproportionately high relative to vehicle value.
Symptoms: Rough idle; cold start problems; increased fuel consumption; black smoke on acceleration.
+ 2 more engine weaknesses + vehicle weaknesses
Compact turbodiesel for superminis and hatches. Good low-down shove, but injectors can get tired with age.
- !! Timing chain stretch at high mileage from 130,000 km
The D4FC timing chain stretches from approximately 120,000 km and can skip teeth, causing valve damage. Dirty oil accelerates wear considerably.
Symptoms: Metallic rattling on cold start, check engine light, power loss, in worst case sudden engine stop. - !! Injector seal blow-by clogs oil circuit from 100,000 km
Defective copper sealing washers on the injectors allow combustion gases into the oil circuit. Coked-up oil blocks the oil strainer and turbo oil gallery, leading to turbo damage.
Symptoms: Blue smoke, rising oil level (diesel contamination), turbo noise, power loss. - !! Turbo failure from oil starvation after blocked oil strainer from 150,000 km
Carbon residue from injector seal blow-by blocks the oil strainer. The turbo receives insufficient oil and seizes — follow-on costs often exceed the vehicle's value.
Symptoms: Whistling turbo noise, blue exhaust clouds, sudden power loss, oil pressure warning.
+ 2 more engine weaknesses + vehicle weaknesses
Turbocharged three-pot with direct injection. Peppy and frugal, but the turbo and GDI setup need attentive upkeep.
- !! Turbocharger sensitivity on small displacement from 90,000 km
The small turbo in the G3LC is very sensitive to oil quality. Extended oil change intervals or burned oil lead to bearing wear. Turbo failures from 80,000 km are well documented.
Symptoms: Whining noise from the turbo area, power loss, blue smoke on acceleration, increased oil consumption. - !! Timing chain tensioner Kappa T-GDi from 60,000 km
The timing chain of the 1.0 T-GDi Kappa II can be damaged in under 30,000 km when oil changes are neglected. Kia/Hyundai introduced a revised chain tensioner in 2020.
Symptoms: Rattling on cold start, check engine light, in the worst case chain jump with valve damage. - !! Timing chain stretches prematurely from 55,000 km
The G3LC 1.0 T-GDI Kappa II shows a clear tendency to timing chain stretch as early as 40,000–66,000 km. Worn tensioners and guide rails are responsible for the cold-start rattle.
Symptoms: Metallic rattling from the engine bay on cold start that improves at operating temperature; in advanced cases, constant noise and rough running
+ 3 more engine weaknesses + vehicle weaknesses
Solid four-cylinder NA with chain drive. Reliable, easy on fuel, and enough for city duty.
- !! Turbocharger Sensitivity in Small-Displacement Engine from 100,000 km
The tiny turbocharger in the 1.0 T-GDi operates under high thermal stress. Oil change intervals below 10,000 km are strongly recommended. Switching off without a cooling-down period damages the turbo bearings.
Symptoms: Whining under full load, reduced boost pressure, oil seeping from the turbocharger. - !! Intake Valve Carbon Buildup T-GDi from 60,000 km
Despite its small displacement, the Kappa 1.0 T-GDi accumulates soot on intake valves through direct injection. Short-trip driving significantly promotes carbon buildup.
Symptoms: Idle stumble, delayed cold start, power dip, cold-start misfires. - !! Timing Chain Tensioner Wear from 100,000 km
The chain tensioner in the 1.4L Kappa loses function with extended oil change intervals. Cold-start rattling is the typical warning; if ignored, the chain jumps and bends valves.
Symptoms: Metallic rattling immediately after cold start for a few seconds, check engine light with severe wear.
+ 2 more engine weaknesses + vehicle weaknesses
NA engine with chain and variable valve timing. Frugal and low-fuss for everyday commuting.
- !! Water Pump Premature Failure from 120,000 km
The G4LC water pump is considered a typical weak point. Leaks and reduced service life are well documented in workshop reports; preventive replacement at 120,000 km is advisable.
Symptoms: Coolant loss, overheating warning, grinding or whining from the pump when heavily worn. - !! Oil Consumption from Poor Lubrication from 130,000 km
The G4LC has a lubrication characteristic rated as 'moderate'. Oil consumption rises with higher mileage due to piston ring wear; regular oil level checks are strongly recommended.
Symptoms: Oil level dropping between service intervals, blue smoke especially after engine braking or idle phases. - !! Timing Chain Stretch from 150,000 km
The simple roller chains in the G4LC stretch relatively quickly under spirited driving or with delayed oil changes. Replacement is recommended at around 200,000 km or on first sign of rattling.
Symptoms: Cold-start rattling, check engine light for camshaft position, poorer throttle response.
+ 2 more engine weaknesses + vehicle weaknesses
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Headlight and tail light failures Inspection flags low-beam headlights, rear lights and indicators on the i20 GB regularly. Bulb failures, connector corrosion and deteriorating headlight seals are typical weak points. Symptoms: Headlight or rear light out, indicator sound changes (rapid flashing), inspection defects from 60,000 km | Low | |
| Door mirrors creak Like its predecessor, the electric door mirrors creak when adjusting or folding. A typical i20 recurring issue due to plastic play in the mirror housing. Symptoms: Creaking when folding or electrically adjusting the mirrors from 50,000 km | Low | |
| Lighting and indicators faulty Low-beam, rear lighting and indicators are flagged more than average at inspection. Bulb failures and incorrectly aimed headlights occur regularly. Symptoms: Indicator or rear light failure, headlight dazzles oncoming traffic from 70,000 km | Low |
Test Reports
TÜV Report 2026
The second i20 shows above-average low defect rates at MOT when young.
2025-11ADAC Breakdown Statistics 2025
The i20 GB shows average breakdown figures with slight weaknesses on the starter battery.
2025-04Top Reported Issues
Alternatives
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Known Problems and Issues +
A total of 37 weaknesses have been documented for the Hyundai i20 GB (2014–2020) — 26 engine-related and 11 vehicle-related. One problem engine: G3LC (1.0L T-GDI (Kappa II)). Typical issues affect Electronics, Suspension, Gearbox, Brakes. Considered reliable: G4LC (1.4L (Kappa)).
i20 (D3FA, 2014–2018) — Be Careful: DPF clogging, Turbocharger — premature wear on small diesel, Injector wear — small diesel. Power: 75 PS.
i20 (D4FC, 2014–2018) — Be Careful: Timing chain stretch at high mileage, Injector seal blow-by clogs oil circuit, Turbo failure from oil starvation after blocked oil strainer. Power: 90 PS.
i20 (G4LA, 2014–2018) — Be Careful: Turbocharger Sensitivity in Small-Displacement Engine, Intake Valve Carbon Buildup T-GDi, Timing Chain Tensioner Wear. Power: 84–86 PS.
i20 (G4LA, 2014–2018) — Be Careful: Turbocharger Sensitivity in Small-Displacement Engine, Intake Valve Carbon Buildup T-GDi, Timing Chain Tensioner Wear. Power: 75 PS.
i20 (G3LC, 2016–2018) — Stay Away!: Turbocharger sensitivity on small displacement, Timing chain tensioner Kappa T-GDi, Timing chain stretches prematurely. Power: 101 PS.
i20 (G3LC, 2016–2018) — Stay Away!: Turbocharger sensitivity on small displacement, Timing chain tensioner Kappa T-GDi, Timing chain stretches prematurely. Power: 120 PS.
i20 (G4LA, 2018–2020) — Be Careful: Turbocharger Sensitivity in Small-Displacement Engine, Intake Valve Carbon Buildup T-GDi, Timing Chain Tensioner Wear. Power: 84 PS.
What to watch out for with the Hyundai i20? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
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Last updated: February 2026 · All information without guarantee