The 1.0-liter, 3-cylinder Mitsubishi 3B21 engine was produced in Japan from 2006 to 2014 and installed in the second generation of the popular Smart Fortwo model with the W451 body style in Europe. This engine is known as the Mercedes M132 according to Daimler-Chrysler's nomenclature. The 3B2 engine family also includes the engines: 3B20, 3B20T, and 3B21T.
| Exact capacity | 999 cm³ |
| Power system | distributed injection |
| Engine power | 61 - 71 HP |
| Torque | 89 - 92 nm |
| Engine block | aluminum R3 |
| Block head | aluminum 12v |
| Cylinder diameter | 72 mm |
| Piston stroke. | 81.8 mm |
| Compression ratio | 11.4 |
| Engine features | DOHC |
| Hydraulic compensator. | there is no |
| Timing drive | chain |
| Timing phase adjuster | MIVEC |
| Turbocharging | there is no |
| What oils to use | 3.3 liters 5W-30 |
| Fuel type | 95 |
| Environmental class | EURO 4/5 |
| Approximate life expectancy | 200 000 HP |
| City | 6.1 litry |
| Route | 4.0 litry |
| Mixed | 4.7 litry |
The weight of the engine 3B21 is 67 kg (without attachments). The engine number 3B21 can be found on the cylinder block. The engine exists in two versions and the simple modification does not cause any trouble. In the MHD hybrid, the starter-generator belt gets misaligned and wears out quickly. If the belt breaks, it leads to the pump stopping and the cylinder head immediately overheating. The rubber rings on the spark plug wells harden by 100,000 km and oil gets into them. There are no hydraulic compensators, and every 100,000 km, valve clearances need to be adjusted.
| Fortwo 2 (W451) | 2006 - 2014 |
The 0.7-liter, 3-cylinder turbocharged Mitsubishi 3B20T engine was produced from 2006 to 2020 and installed in popular kei-car models such as the eK Custom, eK Wagon, and the similar Nissan Dayz model. There are two generations of this powertrain: one for the i model and another for the eK series kei-cars. The 3B2 family also includes the following gasoline engines: - 3B20, - 3B21, and - 3B21T.
The 0.5-liter three-cylinder engine Mitsubishi 3G81 was produced only from 1987 to 1993 and installed in popular kei-car type vehicles of the Japanese company, such as Minica, Minicab, and Bravo. There are five versions of this engine, with many of them equipped with a five-valve cylinder head. The 3G8 family also includes the 3G83 engine.
The 1.1-liter gasoline engine Mitsubishi 4A31 was produced in Japan from 1995 to 2001 and was installed in local kei cars, including the popular Pajero Junior model. In addition to the fuel-injected version, there was also a modification with direct injection. The 4A3 family also includes the 4A30 engine.
The 1.6-liter Mitsubishi 4G32 engine was produced at the company's factories from 1969 to 1992 and was installed in the most popular models of the company, such as Galant, Lancer, Tredia, Cordia. This engine had numerous modifications, including a sport version with DOHC. The 4G3 engine line of Mitsubishi also includes engines: 4G33 and 4G37.
The 4.0-liter V8 petrol engine Jaguar AJ28 was produced by the company from 1999 to 2002 and only installed in advanced versions of the S-Type sedan before its first facelift. This engine was a variant of the AJ26 unit, which was used in the XK sports model. The AJ-V8 series includes the following engines: AJ33, AJ33S, AJ34, AJ34S, AJ126, AJ133 and AJ133S.
The 1.0-liter Toyota 1KR-VE engine has been produced since 2016 in Japan and is exclusively installed in compact models intended for the Southeast Asian markets. This aluminum, three-cylinder engine with a chain-driven timing system is equipped with the VVT-i variable valve timing system on the intake side. The KR family also includes the 1KR-DE and 1KR-FE engines.