Engine Toyota 1SZ-FE

The 1.0-liter Toyota 1SZ-FE engine was produced from 1999 to 2005 in Japan for the Yaris family of models only. The motor was equipped with a phase control system of the VVT-i type only at the inlet, and the gas distribution mechanism of the unit was driven using a Morse chain.

The SZ family also includes engines: 2SZ‑FE and 3SZ‑VE.

The engine was installed on:

  • Toyota Platz XP10 in 1999 – 2005;
  • Toyota Yaris XP10 in 1999 – 2005.


Production years 1999-2005
Displacement, cc 997
Fuel system MPI
Power output, hp 69
Torque output, Nm 95
Cylinder block cast iron R4
Block head aluminum 16v
Cylinder bore, mm 69
Piston stroke, mm 66.7
Compression ratio 10.0
Features no
Hydraulic lifters no
Timing drive Morse chain
Phase regulator VVT-i intake
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 3.2
Fuel type petrol
Euro standards EURO 3/4
Fuel consumption, L/100 km (for Toyota Yaris 2000)
— city
— highway
— combined
Engine lifespan, km ~200 000
Weight, kg 91

Disadvantages of the 1SZ-FE engine

  • This engine is extremely sensitive to quality and especially to the timing of oil changes;
  • There is a chain jump and a meeting of valves with pistons due to the wedge of the hydraulic tensioner;
  • In severe frost and vice versa, the heat may leak air into the intake manifold;
  • Due to the design of the pump, oil is carried through the system for a long time after the engine starts;
  • It is very difficult to adjust the valves, since you need to change the entire drive sleeve.

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