Hyundai i20
Compact turbodiesel for superminis and hatches. Good low-down shove, but injectors can get tired with age.
Sensible and forgettable
The i20 GB drives fine without leaving any impression. Reliable, well-screwed-together, forgettable.
Engine Weaknesses 5
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.
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.
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.
D4FC in short-trip use is prone to DPF clogging because regeneration temperature is never reached. Occasional motorway runs are essential for filter health.
Symptoms: DPF warning light, engine limp mode, severe power loss, increased fuel consumption.
The EGR valve on the D4FC is prone to heavy carbon fouling, especially during short-trip operation. A stuck EGR valve causes rough idle and power loss in the lower RPM range.
Symptoms: Hesitation on pull-away, rough idle, increased consumption, occasional check engine light (P0401/P0403).
Vehicle Weaknesses 10
The i20 GB clutch wears prematurely in city use. With spirited driving or frequent stop-and-go, a shorter service life is to be expected. Clutch slip and judder are typical symptoms.
Rear drum brakes or disc brakes seize on the i20 GB in city-heavy use as they are rarely loaded hard. Inspection reports regularly flag rear brake performance.
Rust forms under the tailgate rubber seals because moisture is trapped there. Typical Hyundai weak point of this generation. Early detection and sealing recommended.
Owners of the i20 GB report uneven tyre wear that can indicate incorrect toe or camber settings.
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.
Rear brakes are barely used in city traffic and can seize as a result. Brake discs and pads can wear prematurely after only 30,000–40,000 km.
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.
Door mirrors on the i20 GB produce creaking and squeaking noises when driving, especially at low temperatures. The cause is plastic clips and rubber seals that become brittle with age.
Low-beam, rear lighting and indicators are flagged more than average at inspection. Bulb failures and incorrectly aimed headlights occur regularly.
Seat upholstery develops waves over time. Door mirrors creak with temperature fluctuations. Screen washer nozzle position is poorly placed.
Reports & Tests
368 owner complaints filed with NHTSA (2014–2020). Most reported: Engine (120), Airbags (91), Electrical (54).