The 1ZR engine has the smallest displacement of 1.6 liters (1598 cc). Like all ZR engines, it is equipped with a 16-valve gas distribution system and a Dual VVT-i variable valve timing system on both camshafts. The 1ZR is equipped with a 4-speed automatic transmission or a 5-speed manual transmission.
Specifications
| Manufacturer | Toyota Motor Manufacturing West Virginia Shimoyama Plant |
| Also called | Toyota 1ZR |
| Production years | 2007 |
| Cylinder block alloy | aluminum |
| Fuel system | injector |
| Configuration | inline |
| Number of cylinders | 4 |
| Valves per cylinder | 4 |
| Piston stroke, mm | 78.5 |
| Cylinder bore, mm | 80.5 |
| Compression ratio | 10.2 10.7 |
| Displacement, cc | 1598 |
| Power output, hp | 126/6000 134/6400 |
| Torque output, Nm / rpm | 157/5200 160/4400 |
| Fuel type | 95 |
| Euro standards | Euro 5 |
| Weight, kg | — |
| Fuel consumption, L/100 km — city — highway — combined |
8.9 5.8 6.9 |
| Oil consumption, gr/1000 km | up to 1000 |
| Recommended engine oil | 0W-20 / 5W-20 / 5W-30 / 10W-30 |
| Engine oil capacity, liter | 4.7 |
| Oil change interval, km | 10000 (better 5000) |
| Normal engine operating temperature, °C | — | Engine lifespan, km — official information — real |
– 250-300 |
Frequent problems
- Fast oil consumption. The problem can be solved by using an analogue of W30 instead of oil with a viscosity of 5W-20 and 0W-20. If the mileage is high, you still need to measure the compression.
- Knocking in the motor. If noise occurs at average rpm, the timing chain tensioner must be replaced. Also, a similar sound can come from the generator belt. It needs to be changed.
- Idling problems. Instability of revolutions and other problems can be triggered by the throttle valve placement detector, as well as plaque on the valve itself.
A pump leak can also be added to unit failures, which must be changed every 50-70 thousand kilometers. The thermostat may become unusable, due to which the necessary heating does not occur. It is not uncommon for the VVTi valve to jam, and for this reason, power is lost. Despite all the flaws, the Toyota 1ZR engine is pretty good. With the right approach to maintenance, the owner will not have to change it even after a quarter of a million km of the distance traveled, and much longer.
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