In 2006, the 4.6-liter Toyota 1UR-FSE engine was first made available as a power source for potent executive class vehicles. This motor has a VVT-iE electric phase shifter at the intake and a unique D4-S direct fuel injection system.
The engines in the UR family are 1URFE, 1URFSE, 2URGSE, 2URFSE, and 3URFE.
The engine was mounted on:
- Toyota Crown Majesta S200 in 2009 – 2013;
- Lexus GS 460 S190 in 2007 – 2011;
- Lexus LS 460 XF40 in 2006 – 2017.
Specifications
| Production years | since 2006 |
| Displacement, cc | 4608 |
| Fuel system | direct injection |
| Power output, hp | 365 – 392 |
| Torque output, Nm | 460 – 500 |
| Cylinder block | aluminum V8 |
| Block head | aluminum 32v |
| Cylinder bore, mm | 94 |
| Piston stroke, mm | 83 |
| Compression ratio | 11.8 |
| Features | ACIS and ETCS-i |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | Dual VVT-i |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 8.6 |
| Fuel type | petrol |
| Euro standards | EURO 4/5 |
| Fuel consumption, L/100 km (for Lexus LS 460 2008) — city — highway — combined |
16.5 7.9 11.1 |
| Engine lifespan, km | ~400 000 |
| Weight, kg | 222 |
Disadvantages of the 1UR-FSE engine
The water pump has a limited resource and can leak up to 100,000 kilometers; the hydraulic tensioner frequently fails, loosening the timing chain tension; too thin valve springs burst in the early years of production; the ETCS-i electronic throttle system occasionally glitches; piston rings lie due to prolonged standing in traffic jams; owners complain about moderate oil consumption up to 0.5 liters per thousand; overall, this power unit is fairly reliable.