| Mitsubishi 3A9 engine | |
|---|---|
 Mitsubishi 3A90 1.0 Mivec Engine (2013 Spacestar) | |
| Overview | |
| Manufacturer | MDC Power |
| Production | 2003–present |
| Layout | |
| Configuration | Naturally aspirated Straight-3 |
| Displacement | 1.0 L (999 cc) 1.1 L (1,124 cc) 1.2 L (1,193 cc) |
| Cylinder bore | 75 mm (2.95 in) |
| Piston stroke | 75.4 mm (2.97 in) 84.8 mm (3.34 in) 90 mm (3.54 in) |
| Cylinder block material | Aluminum |
| Cylinder head material | Aluminum |
| Valvetrain | DOHC 4 valves x cyl. with MIVEC |
| Compression ratio | 10.5:1 |
| Combustion | |
| Fuel system | Fuel injection |
| Fuel type | Unleaded regular gasoline, Gasohol E10, E20 |
| Cooling system | Water-cooled |
| Output | |
| Power output | 52–57 kW (71–77 PS; 70–76 bhp) |
| Torque output | 88–100 N⋅m (65–74 lb⋅ft) |
The Mitsubishi 3A9 engine is a range of all-alloy three cylinder engines from Mitsubishi Motors that were jointly developed with 4A9 engine family. They were introduced in the 2003 version of their Mitsubishi Colt supermini, and built by DaimlerChrysler-owned MDC Power in Germany (previously a joint venture).
For engine family characteristics see 4A9 engine family.