Hybrid versions of popular rear-wheel drive sedans are equipped with the 2.5-liter Toyota 2AR-FSE engine, which has been manufactured in Japan and the USA since 2012. The unit has a combined injection system D4-S, which combines direct and distributed injection, and runs on the Atkinson cycle.
The engines in the AR family are 6AR-FSE, 8AR-FTS, 2AR-FE, 2AR-FXE, 2AR-FSE, 5AR-FE, and 1AR-FE.
The engine was mounted on:
- Toyota Crown S210 in 2012 – 2018;
- Lexus IS 300h XE30 since 2013;
- Lexus GS 300h L10 since 2013.
Specifications
| Production years | since 2012 |
| Displacement, cc | 2494 |
| Fuel system | combined injection D4-S |
| Power output, hp | 178 |
| Torque output, Nm | 221 |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 90 |
| Piston stroke, mm | 98 |
| Compression ratio | 13.0 |
| Features | Hybrid |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | Dual VVT-i |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 4.4 |
| Fuel type | petrol |
| Euro standards | EURO 5 |
| Fuel consumption, L/100 km (for Lexus IS 300h 2015) — city — highway — combined |
4.6 4.6 4.4 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 151 |
Disadvantages of the 2AR-FSE engine
This motor is regarded as one of the most dependable in its class; the VVT-i produces a distinctive crackle when the engine is started;
There is a high risk of stretching a single-row timing chain after 200 thousand kilometers; the water pump occasionally fails after 50–80 thousand kilometers.