Since 1997, only Japan has produced the 1.5-liter Toyota 1NZ-FXE engine. Initially, it was limited to the Prius, but it eventually extended to other hybrid models. The motor has an ETCS-i electronic throttle and a VVT-i phase regulator on the intake shaft.
The 1NZ-FE and 2NZ-FE engines are also part of the NZ family.
The engine was mounted 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
The engine gradually starts to use oil at very high mileage;
Oil leaks are common, particularly from the rear crankshaft oil seal; the hydraulic tensioner frequently fails after 150,000 kilometers and the timing chain is pulled; carbon deposits in the intake and on the throttle are typically the cause of the floating engine speed.