KNOWN FAULTS · Toyota

Known faults for the Toyota Yaris (I).

2000–2005 · Petrol / Diesel

Sources are not verified in real time and no entry confirms that your car is affected.

2 known faults with sources

Engines: 1.0 / 1.3 / 1.5 VVT-i (Petrol) · 1.4 D-4D (Diesel)

Applies if: Weak points of this model from inspections, breakdown statistics and recalls; anything specific to one engine is stated in the sheet.

Oil, rust, MMT gearbox and campaigns on the Yaris IKnown weak points

Engine / equipment: Toyota Yaris I (petrol and 1.4 D-4D)
Period mentioned: 1998–2006
Symptoms: Oil leaking from the crankshaft seal and oil consumption on the small petrol engines; rust on rear arches, sills, tailgate and exhaust; leaking tail lights; wheel bearings, alternator, brakes and bushes; heavy clutch wear with the MMT automated gearbox.
Possible cause described: Recalls the guide says are closed: oil in the crankshaft sensor (the engine can stop), a B-pillar damper that could ignite with the pretensioner, a stiff accelerator pedal, airbags, seat runners, a corroded brake master cylinder and the steering column.
Check for the garage: Check by VIN that the campaigns were done; check rust, leaks and MMT clutch wear.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Engines: 1.4 D-4D (Diesel)

Injectors, dual-mass flywheel and oil consumption on the 1.4 D-4D (1ND-TV)Injection / turbo

Engine / equipment: 1.4 D-4D (1ND-TV): Yaris, Yaris Verso, iQ, Urban Cruiser, Corolla, Auris and Verso-S
Period mentioned: Approx. 2001–2018
Symptoms: Hard starting, rough idle, smoke and loss of power; noise or vibration from the flywheel when starting and releasing the clutch; oil consumption.
Possible cause described: Soot builds up in the injectors and EGR valve, especially with many short trips. The dual-mass flywheel wears and, in the worst case, damages the gearbox. Failures of the rail pressure regulator and oil consumption through the turbo or crankcase ventilation are also reported.
Check for the garage: Read the codes, run an injector back-leak test and check the EGR. Listen to the flywheel at idle with the clutch released. Measure oil consumption.
Cost cited in the source: Approx. €1,000–1,600 for dual-mass flywheel and clutch (German guide).A rough figure from the original database, not an up-to-date quote.