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| Toyota KR engine | |
|---|---|
 1KR-FE in a Daihatsu Sirion | |
| Overview | |
| Manufacturer | Daihatsu |
| Production | 2004–present |
| Layout | |
| Configuration | Straight-3 |
| Displacement | 1.0 L (998 cc) |
| Cylinder bore | 71 mm (2.8 in) |
| Piston stroke | 84 mm (3.31 in) |
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC 4 valves x cyl. with VVT-i |
| Combustion | |
| Turbocharger | On 1KR-VET only |
| Fuel system | Multi-point fuel injection |
| Fuel type | Gasoline |
| Cooling system | Water-cooled |
| Output | |
| Power output | 48–72 kW (64–97 bhp; 65–98 PS) |
| Torque output | 85–140 N⋅m (63–103 lb⋅ft) |
| Dimensions | |
| Dry weight | 69 kg (152 lb) |
| Chronology | |
| Predecessor | |
The Toyota KR engine family is a straight-3 piston engine, designed by Daihatsu, a subsidiary of Toyota. The 1KR series uses aluminium engine blocks and chain driven DOHC cylinder heads. It uses multi-point fuel injection, and has 4 valves per cylinder. Some versions have VVT-i variable valve timing. The engine is exceptionally light: 69 kg (152 lb) with all ancillaries.