The BMW M20 petrol engine series with a capacity ranging from 2.0 to 2.7 liters was produced from 1977 to 1992 and installed in the most popular models of that time: the 3 Series and the 5 Series. This engine also served as the power unit for the very unusual roadster identified by the symbol Z1. The R6 engine lineup includes: M30, M50, M52, M54, N52, N53, N54, N55, and B58.
| Exact capacity | 1991 cm³ |
| Power system | carburetor |
| Engine power | 122 HP |
| Torque | 163 nm |
| Engine block | cast iron R6 |
| Block head | aluminum 12v |
| Cylinder diameter | 80 mm |
| Piston stroke. | 66 mm |
| Compression ratio | 9.2 |
| Engine features | there is no |
| Hydraulic compensator. | there is no |
| Timing drive | strip |
| Timing phase adjuster | there is no |
| Turbocharging | there is no |
| What oils to use | 4.25 liters 5W-30 |
| Fuel type | 92 |
| Environmental class | EURO 0 |
| Approximate life expectancy | 300 000 HP |
| Exact capacity | 1991 cm³ |
| Power system | Jetronic / Motronic |
| Engine power | 120 - 130 HP |
| Torque | 165 - 175 nm |
| Engine block | cast iron R6 |
| Block head | aluminum 12v |
| Cylinder diameter | 80 mm |
| Piston stroke. | 66 mm |
| Compression ratio | 8.8 - 9.8 |
| Engine features | there is no |
| Hydraulic compensator. | there is no |
| Timing drive | belt |
| Timing phase adjuster | there is no |
| Turbocharging | there is no |
| What oils to use | 4.25 liters 5W-30 |
| Fuel type | 92 |
| Environmental class | EURO 1/2 |
| Approximate life expectancy | 320 000 HP |
| Exact capacity | 2316 cm³ |
| Power system | Jetronic K / L |
| Engine power | 140 - 150 HP |
| Torque | 175 - 205 nm |
| Engine block | cast iron R6 |
| Block head | aluminum 12v |
| Cylinder diameter | 80 mm |
| Piston stroke. | 76.8 mm |
| Compression ratio | 9.5 - 9.8 |
| Engine features | there is no |
| Hydraulic compensator. | there is no |
| Timing drive | strip |
| Timing phase adjuster | there is no |
| Turbocharging | there is no |
| What oils to use | 4.5 liters 5W-30 |
| Fuel type | 92 |
| Environmental class | EURO 1 |
| Approximate life expectancy | 330 000 HP |
| Exact capacity | 2494 cm³ |
| Power system | Motronic ME / DME |
| Engine power | 170 - 175 HP |
| Torque | 220 - 225 nm |
| Engine block | cast iron R6 |
| Block head | aluminum 12v |
| Cylinder diameter | 84 mm |
| Piston stroke. | 75 mm |
| Compression ratio | 8.8 - 9.7 |
| Engine features | there is no |
| Hydraulic compensator. | there is no |
| Timing drive | belt |
| Timing phase adjuster | there is no |
| Turbocharging | there is no |
| What oils to use | 4.75 liters 5W-30 |
| Fuel type | 92 |
| Environmental class | EURO 2 |
| Approximate life expectancy | 340 000 HP |
| Exact capacity | 2693 cm³ |
| Power system | Motronic ME / DME |
| Engine power | 120 - 130 HP |
| Torque | 230 - 240 nm |
| Engine block | cast iron R6 |
| Block head | aluminum 12v |
| Cylinder diameter | 84 mm |
| Piston stroke. | 81 mm |
| Compression ratio | 8.5 - 11.0 |
| Engine features | there is no |
| Hydraulic compensator. | there is no |
| Timing drive | strip |
| Timing phase adjuster | there is no |
| Turbocharging | there is no |
| What oils to use | 4.8 liters 5W-30 |
| Fuel type | 92 |
| Environmental class | EURO 2 |
| Approximate life expectancy | 350 000 HP |
| City | 10.9 litry |
| Route | 6.7 litry |
| Mixed | 8.8 litry |
The weight of the M20 engine according to the catalog is 117 kg. The weight of the M20 engine according to the catalog is 177 kg. Malfunctions in the cooling system often lead to engine overheating and cylinder head cracks. Also, at mileages above 200-250 thousand km, the camshaft bed often wears out. The timing belt lasts about 50,000 km, and if it breaks, it can cause valve bending and piston damage. There are no hydraulic compensators, and the valves have to be adjusted every 10-20 thousand km. With high mileage, oil starts to constantly leak from all gaskets and seals.
| 3-Series E21 | 1977 - 1982 |
| 3-Series E30 | 1982 - 1992 |
| 5-Series E12 | 1977 - 1981 |
| 5-Series E28 | 1981 - 1987 |
| 5-Series E34 | 1988 - 1990 |
| Z1 Roadster | 1989 - 1991 |
The BMW B38 series of three-cylinder engines with a capacity of 1.5 liters has been produced since 2013 and is installed in front-wheel drive cars as B38A15, in rear-wheel drive cars as B38B15, and in hybrids as B38K15. These units are also installed in Mini models: the 1.2-liter B38A12A and the 1.5-liter B38A15A. Currently, the R3 line only includes one family of engines.
The BMW M43 petrol engine series with a capacity ranging from 1.6 to 1.9 liters was produced from 1993 to 2002 and installed in popular models such as the E34 body of the 5 Series, as well as the E36 and E46 bodies of the 3 Series. There was also a 16-valve version of the 1.9-liter engine with its own designation, M44B19. The line of BMW four-cylinder engines includes: M10, M40, N42, N43, N45, N46, N13, N20, and B48.
The BMW N43 petrol engine series with a displacement of 1.6 and 2.0 liters was produced from 2007 to 2013 and installed in the 1-Series (E87), 3-Series (E90) and 5-Series (E60) models. This system differed from its predecessors by the presence of direct fuel injection. The four-cylinder engine lineup includes: M10, M40, M43, N42, N45, N46, N13, N20, and B48.
The 1.6-liter turbo petrol engine BMW N13 was produced by the company from 2011 to 2016 and was only installed in two models of the group: 1-Series (F20) and 3-Series (F30). This engine was developed in cooperation with PSA and is known there as EP6CDT. The R4 line includes: M10, M40, M43, N42, N43, N45, N46, N20, and B48.
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.