Description
The Toyota 1KR-FE is a compact 998 cc, 3-cylinder petrol engine used in the Toyota Yaris/Vitz and several other Toyota models. It is part of Toyota’s KR engine family and is designed primarily for low fuel consumption, light weight and reliable urban operation.
Toyota’s official Yaris specifications identify the engine as an in-line transverse 3-cylinder, DOHC 12-valve VVT-i engine with a 998 cc displacement, 71.0 × 84.0 mm bore and stroke. Depending on generation and market, factory output varies; early Yaris versions were rated at 68 bhp/69 PS and 93 Nm, while later versions were rated around 68 bhp/51 kW and 95 Nm.
| Specification | 1KR-FE | 2SZ-FE |
|---|---|---|
| Capacity | 998 cc | 1,296 cc |
| Cylinders | 3 | 4 |
| Valves | 12 | 16 |
| DOHC | Yes | Yes |
| VVT-i | Yes | Yes |
| Bore | 71 mm | 72 mm |
| Stroke | 84 mm | 79.6 mm |
| Typical power | ~68–71 PS | ~86–87 PS |
| Typical torque | ~93–95 Nm | ~121 Nm |
| Fuel | Petrol | Petrol |
| Specification | 1KR-FE | 1NR-FE |
|---|---|---|
| Capacity | 998 cc | 1,329 cc |
| Cylinders | 3 | 4 |
| Valves | 12 | 16 |
| Camshafts | DOHC | DOHC |
| VVT | VVT-i | Dual VVT-i |
| Bore | 71 mm | 72.5 mm |
| Stroke | 84 mm | 80.5 mm |
| Typical power | ~68 PS | ~100 PS |
| Typical torque | ~93–95 Nm | ~132 Nm |
TOYOTA YARIS 1.0L 1KR-FE
Engine code: 1KR-FE
Engine family: KR
Fuel: Petrol/Gasoline
Displacement: 998 cc
Some Japanese applications: 996 cc
Cylinders: 3
Configuration: Inline
Installation: Transverse
Valves: 12
Valves/cylinder: 4
Camshaft: DOHC
Variable valve timing: VVT-i
Bore: 71.0 mm
Stroke: 84.0 mm
Compression: 10.5:1 early / 11.5:1 later, depending on version
Aspiration: Naturally aspirated
Turbocharger: No
Fuel injection: Electronic
Ignition: Electronic
Engine management: ECU
Cooling: Liquid cooled
Block: Aluminum
Cylinder head: Aluminum alloy
Timing: Chain
Typical power: 68–71 PS @ 6,000 rpm
Typical torque: 93–95 Nm
Fuel: 95-octane petrol or higher for the referenced early European specification
Typical transmission: 5-speed manual / M-MT / CVT depending on application
Typical vehicles: Toyota Yaris/Vitz, Aygo, Passo, Belta, iQ and related applications.
The Toyota Yaris 1.0 1KR-FE is a 998 cc naturally aspirated 3-cylinder petrol engine with DOHC, 12 valves and VVT-i. Its core dimensions are 71.0 × 84.0 mm, and factory Yaris versions generally produce around 68–71 PS and 93–95 Nm, depending on generation and market.
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