The M133 is a turbocharged inline-four engine produced by Mercedes-Benz. Since its debut in 2013, it has been awarded International Engine of the Year three times in the "Best New Engine" and "1.8-litre to 2-litre" categories.[1]
| Mercedes-Benz M133 | |
|---|---|
| Overview | |
| Manufacturer | Mercedes-AMG |
| Production | 2013–2019 |
| Layout | |
| Configuration | Inline-four engine |
| Displacement | 2.0 L (1,991 cc) |
| Cylinder bore | 83 mm (3.27 in) |
| Piston stroke | 92 mm (3.62 in) |
| Block material | Aluminium alloy |
| Head material | Aluminium alloy |
| Valvetrain | DOHC |
| Compression ratio | 8.6:1 |
| Combustion | |
| Turbocharger | Single twin-scroll |
| Fuel system | Direct injection |
| Fuel type | Gasoline |
| Output | |
| Power output | 265–280 kW (360–381 PS; 355–375 hp) |
| Torque output | 450–475 N⋅m (332–350 lb⋅ft) |
| Dimensions | |
| Dry weight | 147.8 kg (326 lb) |
| Chronology | |
| Successor | Mercedes-Benz M139 engine |
The M133 is based on the M270 engine but has been extensively revised by AMG.[2] It features a twin-scroll turbocharger, BlueDIRECT direct injection, iron-carbon alloy on the cylinder walls to reduce friction, and zircon in the cylinder heads to increase thermal conductivity.[3] The cooling system is also based on the one found in the Mercedes-Benz SLS AMG.[4] The M133 was updated in 2015, and features performance improvements of 15 kW (20 PS; 20 hp) and 25 N⋅m (18 lb⋅ft).[5]
| Engine | Power | Torque | Years |
|---|---|---|---|
| M133 DE20 LA | 265 kW (360 PS; 355 hp) at 6,000 rpm |
450 N⋅m (332 lb⋅ft) at 2,250–5,000 rpm |
2013–2015 |
| 280 kW (381 PS; 375 hp) at 6,000 rpm |
475 N⋅m (350 lb⋅ft) at 2,250–5,000 rpm |
2015–2018 |