Timing chain stretch (1SZ / 2SZ)
usually 120,000–220,000 km · Medium risk
engine codes: 1SZ-FE, 2SZ-FE
Signs: Rattle on start
Fix: Replace chain kit
€400–800
Engine: common problems, timing drive and oil
1.0 / 1.3 / 1.5 VVT-i (Toyota SZ / NZ)
Petrol · 998 / 1,298 / 1,329 / 1,497 cm³ · 50–81 kW
3
model generations
2
known faults
Enter your VIN and mileage and get a plan built for your exact engine and gearbox.
Fuel: Petrol. Timing drive: chain.
In our database this engine is fitted to 3 model generations, among them: Toyota Yaris II, Toyota Yaris I, Toyota Yaris Verso.
The most expensive known risk is timing chain stretch (1SZ / 2SZ): it usually appears at 120,000–220,000 km and costs €400–800 to fix.
Key facts
| Fuel | Petrol |
|---|---|
| Displacement | 998 / 1,298 / 1,329 / 1,497 cm³ |
| Power | 50–81 kW |
| Years | 1999–2013 |
| Timing drive | Chain |
| Oil | 5W-30 · API SL · ~3.7 L · every 15,000 km |
| Engine codes | 1SZ-FE, 2SZ-FE, 2NZ-FE, 1NZ-FE |
Known engine faults
Faults that belong to the engine itself. They apply to every model with this engine, and each model has its own extra faults on its model page.
Water pump
usually 120,000–200,000 km · Wear part
Signs: Coolant weep
Fix: Replace pump
€200–400
Engine-related service
Intervals and typical prices, using the Toyota Yaris II as an example. The app gives the exact plan for your car.
| Item | Interval | Typical price |
|---|---|---|
| Engine oil + oil filterEngine | every 15,000 km or every 12 months | €70–150 |
| Air filterEngine | every 30,000 km or every 24 months | €15–45 |
| Spark plugsIgnition | every 60,000 km or every 48 months | €50–160 |
| Auxiliary (serpentine) beltEngine | every 120,000 km | €70–180 |
| Coolant replacementCooling | every 150,000 km or every 96 months | €70–150 |
| Timing chain inspection (listen on cold start)Engine | every 150,000 km | €0–120 |
Models with this engine
Model generations this engine is fitted to.
Toyota Yaris I 1999–2005Toyota Yaris II 2005–2011Toyota Yaris Verso 1999–2005
Common questions
Does the 1.0 / 1.3 / 1.5 VVT-i (Toyota SZ / NZ) engine have a timing chain or a timing belt?
Chain.
What oil does the 1.0 / 1.3 / 1.5 VVT-i (Toyota SZ / NZ) engine take?
5W-30 · API SL · ~3.7 L · every 15,000 km.
What are the known problems with the 1.0 / 1.3 / 1.5 VVT-i (Toyota SZ / NZ) engine?
The faults with the highest risk: timing chain stretch (1SZ / 2SZ) (120,000–220,000 km, €400–800).
Which cars have the 1.0 / 1.3 / 1.5 VVT-i (Toyota SZ / NZ) engine?
Toyota Yaris II, Toyota Yaris I, Toyota Yaris Verso.
Sources and notes
Faults, intervals and prices are indicative and collected from public sources and owner experience; always rely on the service book and a qualified workshop. Test statistics: DVSA – Anonymised MOT tests and results, Open Government Licence v3.0. Dutch tests: RDW Open Data (CC0). Owner complaints: NHTSA ODI (public domain). Recalls: DVSA Vehicle Safety Branch Recalls Database, OGL v3.0. Brand and model names are trademarks of their owners and are used only to describe the vehicles.
Updated 08/10/2026