Engine Toyota 1NZ-FXE

The 1.5-liter Toyota 1NZ-FXE engine has been produced since 1997 only in Japan. At first, it was installed only on the Prius, but then it spread to other hybrid models of the concern. The motor is equipped with a VVT-i phase regulator on the intake shaft and an ETCS-i electronic throttle.

The NZ family also includes engines: 1NZ-FE and 2NZ-FE.

The engine was installed on:

  • Toyota Corolla E160 since 2012;
  • Toyota Prius 1 (XW10) in 1997 – 2003; Prius 2 (XW20) in 2003 – 2009; Prius C 1 (NHP10) since 2011;
  • Toyota Sienta 2 (XP170) since 2015;
  • Toyota Yaris 3 (XP130) since 2012.

Specifications

Production years since 1997
Displacement, cc 1497
Fuel system injector MPI
Power output, hp 70 – 77
Torque output, Nm 110 – 115
Cylinder block aluminum R4
Block head aluminum 16v
Cylinder bore, mm 75
Piston stroke, mm 84.7
Compression ratio 13 – 13.4
Features Hybrid
Hydraulic lifters since 2004
Timing drive chain
Phase regulator VVT-i intake
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 3.7
Fuel type 95
Euro standards EURO 4/5
Fuel consumption, L/100 km (for Toyota Prius 2006)
— city
— highway
— combined
5.5
4.7
5.1
Engine lifespan, km ~250 000
Weight, kg 144

Disadvantages of the 1NZ-FXE engine

  • At very high mileage, the engine gradually begins to consume oil;
  • After 150,000 km, the hydraulic tensioner often gives up and the timing chain is pulled;
  • The fault of the floating engine speed is usually carbon deposits in the intake and on the throttle;
  • Often there are oil leaks, especially from the rear crankshaft oil seal.

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