M50B20 BMW M50B20

Рядний 6-циліндровий двигун BMW з електронним впорском пального, відомий своєю надійністю та плавністю роботи.

Brand: BMW Type: Petrol Configuration: Inline-6 Production Years: 1989 - 1994 Production: Munich, Germany
86 Brand engines
3 Modifications

Technical Specifications

Engine Displacement 2.0 L (1,991 cc)
Configuration Inline-6
Number of Cylinders 6
Valves per Cylinder 4
Power 150 л.с.
Torque 190 Н*м
Cylinder Bore 80.00 mm
Piston Stroke 66.00 mm
Compression Ratio 10.0:1
Firing Order 1-5-3-6-2-4
Fuel System Multi-point fuel injection
Aspiration Naturally Aspirated
Intercooler No
Maximum RPM 6,500 rpm
Max Torque RPM 4,700 rpm
Valve Train DOHC
Timing Drive Belt
Timing belt replacement interval 100,000 km
Block Material Cast Iron
Head Material Aluminum
Engine Weight 170 kg
Dimensions (L×W×H) null mm
Lubrication System Wet sump
Cooling System Liquid cooling

Additional Information

Engine Family BMW M50 engine series
Manufacturing Plant Munich, Germany
Predecessor M20B20
Successor M52B20

Maintenance

Engine Oil Capacity 6.5 L (with filter: 6.75 L)
Recommended Viscosity 10W-40
Oil Standard ACEA A3/B3
Recommended Brands Castrol GTX, Mobil 1, Shell Helix
Oil Change Interval 10 000 km or 12 mo
Oil Filter 11421730389
Air Filter 13721730946
Replace every 40 000 km
Fuel filter 13321740985
Spark Plugs Type: Copper
Part number: 12129071003
Gap: 0.8 mm
Quantity: 6 pcs
Replace every 30 000 km
Coolant Capacity 10 L
Coolant Type G11 (BMW Coolant)
Coolant Change Interval 100 000 km
Thermostat Opening Temperature 88°C
Operating Temperature 90°C
Max Operating Temperature 110°C
Critical Temperature 120°C
Annual Maintenance Cost 500-800 USD

Reliability

Reliability rating: 8/10

Expected lifespan: 300 000 km

Common problems

Problem Severity Mileage Repair cost
Water pump failure Medium 100000-150000 km $200-400
Valve cover gasket leak Low 120000-180000 km $100-200

Known defects

  • Early models had issues with Nikasil cylinder lining

Tuning potential

Tuning potential: Medium | Max. safe power: 250 hp

Stage Power Torque Method Cost
Stage 1 170 hp 210 Nm ECU remap
Reliability impact: Minimal
$400
Stage 2 190 hp 230 Nm ECU, Exhaust System
Required: Exhaust system, Intake system
Reliability impact: Low
$1500
Stage 3 220 hp 260 Nm -
Required: Turbo conversion, Forged internals
Reliability impact: Medium
$5000

Popular modifications

Tuning limitations

  • Stock internals limit power increase
  • Cooling system may require upgrades

Cars with the M50B20 engine

This engine was fitted to 2 models

Photo Brand Model Generation Production years
No photo
BMW 3 Series 3 series (E36) 1991 - 1998
5 series (E34) BMW 5 Series 5 series (E34) 1988 - 1995

All modifications (3)

Vehicle Generation Modification Power Gearbox Drive
BMW 3 Series 3 series (E36) BMW 320i 2.0 л.с. 6-МКП 2WD 150 hp 6-МКП 2WD
BMW 3 Series 3 series (E36) BMW 320i 2.0 л.с. 5-Автомат 2WD 150 hp 5-Автомат 2WD
BMW 5 Series 5 series (E34) BMW 520i 2.0 150 л.с. 5-МКП 2WD 150 hp 5-МКП 2WD

Interesting Facts

  • First BMW engine to feature VANOS variable valve timing
  • Known for its smooth operation and reliability

Applications

Total produced: unknown

Vehicle Generation Years Power Markets
BMW 3 Series E36 1990-1994 150hp Europe, USA
BMW 5 Series E34 1990-1994 150hp Europe, USA

Compatible transmissions: 5-speed Manual, 4-speed Automatic

Drive types: RWD

Fuel Economy

Fuel Type Petrol 95
Octane Rating Minimum: 91 | Recommended: 95
Consumption (City) 12 L/100km
Consumption (Highway) 7.5 L/100km
Consumption (Combined) 9.5 L/100km
Real Consumption 10 L/100km
Fuel Tank Capacity 65 L
Range 684 km
Cost per 100 km 15-20 USD

Emissions Standards

Emission Standard Euro 1
CO₂ Emissions 220 g/km
Particulate Filter (DPF) Absent
AdBlue Not Required

Comparison with competitors

Engine Brand Displacement Power Torque
1G-FE Toyota 1,988 cc 160 hp 200 Nm

Pros

  • Smooth and reliable inline-6 design
  • Good balance of power and efficiency

Cons

  • Higher maintenance costs compared to 4-cylinder engines
  • Older technology compared to newer engines