BMW M20 engine

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.

Technical specifications of BMW M20 series engines.

Modified: M20B20VE
Exact capacity1991 cm³
Power systemcarburetor
Engine power122 HP
Torque163 nm
Engine blockcast iron R6
Block headaluminum 12v
Cylinder diameter80 mm
Piston stroke.66 mm
Compression ratio9.2
Engine featuresthere is no
Hydraulic compensator. there is no
Timing drivestrip
Timing phase adjusterthere is no
Turbochargingthere is no
What oils to use4.25 liters 5W-30
Fuel type92
Environmental classEURO 0
Approximate life expectancy300 000 HP
Modified: M20B20 (KE, LE and DME versions)
Exact capacity1991 cm³
Power systemJetronic / Motronic
Engine power120 - 130 HP
Torque165 - 175 nm
Engine blockcast iron R6
Block headaluminum 12v
Cylinder diameter80 mm
Piston stroke.66 mm
Compression ratio8.8 - 9.8
Engine featuresthere is no
Hydraulic compensator. there is no
Timing drivebelt
Timing phase adjusterthere is no
Turbochargingthere is no
What oils to use4.25 liters 5W-30
Fuel type92
Environmental classEURO 1/2
Approximate life expectancy320 000 HP
Modified: M20B23 (KE and LE versions)
Exact capacity2316 cm³
Power systemJetronic K / L
Engine power140 - 150 HP
Torque175 - 205 nm
Engine blockcast iron R6
Block headaluminum 12v
Cylinder diameter80 mm
Piston stroke.76.8 mm
Compression ratio9.5 - 9.8
Engine featuresthere is no
Hydraulic compensator. there is no
Timing drivestrip
Timing phase adjusterthere is no
Turbochargingthere is no
What oils to use4.5 liters 5W-30
Fuel type92
Environmental classEURO 1
Approximate life expectancy330 000 HP
Modified: M20B25 (ME and DME versions)
Exact capacity2494 cm³
Power systemMotronic ME / DME
Engine power170 - 175 HP
Torque220 - 225 nm
Engine blockcast iron R6
Block headaluminum 12v
Cylinder diameter84 mm
Piston stroke.75 mm
Compression ratio8.8 - 9.7
Engine featuresthere is no
Hydraulic compensator. there is no
Timing drivebelt
Timing phase adjusterthere is no
Turbochargingthere is no
What oils to use4.75 liters 5W-30
Fuel type92
Environmental classEURO 2
Approximate life expectancy340 000 HP
Modification: M20B27 (ME and DME versions)
Exact capacity2693 cm³
Power systemMotronic ME / DME
Engine power120 - 130 HP
Torque230 - 240 nm
Engine blockcast iron R6
Block headaluminum 12v
Cylinder diameter84 mm
Piston stroke.81 mm
Compression ratio8.5 - 11.0
Engine featuresthere is no
Hydraulic compensator. there is no
Timing drivestrip
Timing phase adjusterthere is no
Turbochargingthere is no
What oils to use4.8 liters 5W-30
Fuel type92
Environmental classEURO 2
Approximate life expectancy350 000 HP

Fuel consumption BMW M20 engine

An example could be the BMW 520i from 1986 with a manual gearbox.
City10.9 litry
Route6.7 litry
Mixed8.8 litry

Engine Overview and Common Failures

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.

Engine Bmw M20

BMW
3-Series E211977 - 1982
3-Series E301982 - 1992
5-Series E121977 - 1981
5-Series E281981 - 1987
5-Series E341988 - 1990
Z1 Roadster1989 - 1991

Engines from the same line as BMW M20 engine

See Also

BMW M30 engine

The BMW M30 petrol engine series, with a displacement ranging from 2.5 to 3.5 liters, was produced from 1968 to 1992 and installed in several generations of popular models in the 5, 6, or 7 Series. This powertrain also served as the basis for many racing engines produced by the company. The inline-6 lineup includes: M20, M50, M52, M54, N52, N53, N54, N55, and B58.

BMW N54 engine

The 3.0-liter turbocharged gasoline engine BMV N54 was produced by the company from 2006 to 2016 and installed in many popular models: 1-Series, 3-Series, 5-Series, 7-Series, and X6. This engine was actively used by Alpina to create their super powerful drivetrains. The inline-six engine lineup includes: M20, M30, M50, M52, M54, N52, N53, N55, and B58.

BMW B58 Engine

The BMW B58 engine series, with a capacity of 3.0 liters and six cylinders, has been assembled in Munich since 2015 and used in the sporty versions of rear-wheel drive models by the German company. There are two generations of these engines, as well as the S58 line of sport units based on them. The R6 line includes: M20, M30, M50, M52, M54, N52, N53, N54, and N55.

BMW N63 engine

The BMW N63 V8 engine series with a capacity of 4.0 and 4.4 liters has been produced since 2008 and is practically installed in all modern, large models of the German automotive group. There are also several sport versions of this engine with the S63 index and power up to 600 HP. The V8 engine line also includes units: M60, M62, and N62.

Toyota 3S-FE engine

The 2.0-liter 16-valve Toyota 3S-FE engine was produced by the company from 1986 to 2003 and was installed in many models such as Celica, Camry, Carina, and Caldina. This power unit is considered one of the most reliable engines of its time. The S series includes: 3S-FC, 3S-FSE, 3S-GE, 3S-GTE, 4S-Fi, 4S-FE, and 5S-FE.

Toyota 2TZ-FZE engine

The 2.4-liter Toyota 2TZ-FZE engine was produced in Japan from 1994 to 1999 and was installed in rear-wheel drive and all-wheel drive minivans. This engine was specifically developed to be placed under the floor of the body, has a tilt angle of 75 degrees, and features mechanical supercharging. The TZ engine family also includes the 2TZ-FE engine.