The company assembled the 1.1-liter 3-cylinder Mitsubishi 3A91 engine from 2004 to 2012 and installed it only on the sixth generation of the Colt model and the Smart hatchback similar to it. According to the nomenclature of the Daimler-Chrysler concern, such a power unit is known as the Mercedes M134.
The 3A9 family also includes engines: 3A90 and 3A92.
The engine was installed on:
- Mitsubishi Colt 6 (Z30) in 2004 – 2012;
- Smart Forfour 1 (W454) in 2004 – 2006.
Specifications
| Production years | 2004-2012 |
| Displacement, cc | 1124 |
| Fuel system | distributed injection |
| Power output, hp | 75 |
| Torque output, Nm | 100 |
| Cylinder block | aluminum R3 |
| Block head | aluminum 12v |
| Cylinder bore, mm | 75 |
| Piston stroke, mm | 84.8 |
| Compression ratio | 10.5 |
| Features | DOHC |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | MIVEC |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 3.2 |
| Fuel type | petrol |
| Euro standards | EURO 4/5 |
| Fuel consumption, L/100 km (for Mitsubishi Colt 2005) — city — highway — combined |
7.0 4.6 5.5 |
| Engine lifespan, km | ~220 000 |
| Weight, kg | 92 |
Disadvantages of the Mitsubishi 3A91 engine
- In the early years there were problems with floating speeds, but everyone was treated with firmware;
- And so the main problems of this power unit are associated only with lubricant consumption;
- Thin piston rings lie already by 100,000 km of run and an oil burner appears;
- After 150,000 km, the timing chain often needs to be replaced and most often with a phase regulator;
- There are no hydraulic lifters here, so do not forget about adjusting valve clearances.
