Since 2004, a variety of compact models have had the 1.0-liter Toyota 1KR-FE engine assembled in Poland and Japan. Only the intake shaft of the aluminum three-cylinder engine with a timing chain drive has the exclusive VVT-i variable valve timing system.
The engines 1KR-DE and 1KR-VE are also part of the KR family.
The engine was mounted on:
- Toyota Aygo 1 (AB10) in 2005 – 2014; Aygo 2 (AB40) since 2014;
- Toyota Belta 1 (XP90) in 2005 – 2012;
- Toyota iQ 1 (GJ10) in 2008 – 2015;
- Toyota Yaris 2 (XP90) in 2005 – 2011; Yaris 3 (XP130) since 2011;
- Daihatsu Sirion M300 in 2004 – 2010; Sirion M600 in 2010 – 2016; Sirion M700 since 2016;
- Daihatsu Cuore L275 in 2006 – 2016;
- Peugeot 107 I (B0) in 2005 – 2014; 108 I (B3) since 2014;
- Citroen C1 I (B0) in 2005 – 2014; C1 II (B4) since 2014.
Specifications
| Production years | since 2004 |
| Displacement, cc | 996 |
| Fuel system | injector MPI |
| Power output, hp | 68 – 71 |
| Torque output, Nm | 90 – 94 |
| Cylinder block | aluminum R3 |
| Block head | aluminum 12v |
| Cylinder bore, mm | 71 |
| Piston stroke, mm | 84 |
| Compression ratio | 10.5 |
| Features | ETCS-i |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | VVT-i intake |
| Turbocharging | no |
| Recommended engine oil | 5W-20 |
| Engine oil capacity, liter | 3.1 |
| Fuel type | petrol |
| Euro standards | EURO 4/5 |
| Fuel consumption, L/100 km (for Toyota Aygo 2007) — city — highway — combined |
5.5 4.1 4.6 |
| Engine lifespan, km | ~200 000 |
| Weight, kg | 75 |
Disadvantages of the 1KR-FE engine
Owners typically complain about loud knocks and vibrations at work;
The range of a single-row timing chain is between 100 and 120 thousand kilometers;
The liners frequently rotate as a result of clogged oil channels;
There are issues with starting the engine in cold weather, and the water pump has a limited resource.