The 4.6-liter Toyota 1UR-FSE engine was first introduced in 2006 as a power unit for powerful executive class models. This motor is equipped with a proprietary D4-S direct fuel injection system and a VVT-iE electric phase shifter at the intake.
The UR family includes engines: 1UR‑FE, 1UR‑FSE, 2UR‑GSE, 2UR‑FSE, 3UR‑FE.
The engine was installed 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
- Owners complain about moderate oil consumption up to 0.5 liters per thousand;
- The water pump has a small resource and can leak up to 100,000 km;
- Often the hydraulic tensioner fails, loosening the timing chain tension;
- In the early years of production, too thin valve springs burst;
- Glitches of the ETCS-i electronic throttle system periodically occur;
- From prolonged standing in traffic jams, piston rings lie;
- In general, the reliability of this power unit is pretty good.
