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 | petrol |
| 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.
