BMW: B70A BMW B70A

Brand: BMW Type: Petrol Configuration: V12 Production Years: 1987 - 1994 Production: Munich, Germany
86 Brand engines
1 Modifications

Technical Specifications

Engine Displacement (4,988 cc)
Configuration V12
Number of Cylinders 12
Valves per Cylinder 2
Power 295 - 300 л.с.
Torque 450 Н*м
Cylinder Bore 84.00 mm
Piston Stroke 75.00 mm
Compression Ratio 8.8:1
Firing Order 1-7-5-11-3-9-6-12-2-8-4-10
Fuel System Bosch Motronic
Aspiration Naturally Aspirated
Intercooler No
Maximum RPM 6,000 rpm
Max Torque RPM 4,100 rpm
Valve Train SOHC
Timing Drive Chain
Timing Chain Replacement 250000 or as needed
Block Material Aluminum
Head Material Aluminum
Engine Weight 240 kg
Dimensions (L×W×H) null mm
Lubrication System Wet sump
Cooling System Liquid cooling

Additional Information

Engine Family BMW V12 engine series
Manufacturing Plant Munich, Germany
Successor M73

Maintenance

Engine Oil Capacity 8 L (with filter: 8.5 L)
Recommended Viscosity 10W-40
Oil Standard API SJ
Recommended Brands Castrol, Mobil 1, Shell
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: 12129061862
Gap: 0.8 mm
Quantity: 12 pcs
Replace every 30 000 km
Coolant Capacity 13.5 L
Coolant Type G11 (BMW Coolant)
Coolant Change Interval 60 000 km
Thermostat Opening Temperature 80°C
Operating Temperature 90°C
Max Operating Temperature 110°C
Critical Temperature 120°C
Annual Maintenance Cost 1000-1500 USD

Reliability

Reliability rating: 8/10

Expected lifespan: 300 000 km

Common problems

Problem Severity Mileage Repair cost
Valve cover gasket leaks Medium 100000-150000 km $300-500
Cooling system failures High 120000-180000 km $800-1200

Known defects

  • Early models had issues with the timing chain tensioner

Tuning potential

Tuning potential: Medium | Max. safe power: 450 hp

Stage Power Torque Method Cost
Stage 1 320 hp 480 Nm ECU remap
Reliability impact: Minimal 		$1000
Stage 2 350 hp 520 Nm -
Required: Exhaust system upgrade, ECU remap
Reliability impact: Low 		$3000
Stage 3 400 hp 580 Nm -
Required: Forced induction, Forged internals
Reliability impact: Medium-High 		$10000

Popular modifications

  • Cold air intake
  • Performance exhaust
  • ECU tuning

Tuning limitations

  • Cooling system limitations
  • Transmission durability

Cars with the BMW: B70A engine

This engine was fitted to 1 model

Photo Brand Model Generation Production years
i7 (G70) BMW i7 i7 (G70) 2022 - present

All modifications (1)

Vehicle Generation Modification Power Gearbox Drive
BMW i7 i7 (G70) i7 xDrive40 335 л.с. 8-Автомат 4x4 335 hp 8-Автомат 4x4

Interesting Facts

  • The B70A was BMW's first production V12 engine.
  • It was one of the most advanced engines of its time, featuring electronic throttle control.

Applications

Total produced: 31000

Vehicle Generation Years Power Markets
BMW 7 Series E32 1987-1994 295hp Europe, USA

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

Drive types: RWD

Fuel Economy

Fuel Type Petrol 95
Octane Rating Minimum: 91 | Recommended: 95
Consumption (City) 18 L/100km
Consumption (Highway) 11 L/100km
Consumption (Combined) 14.5 L/100km
Real Consumption 15.5 L/100km
Fuel Tank Capacity 90 L
Range 620 km
Cost per 100 km 20-25 USD

Emissions Standards

Emission Standard Euro 1
CO₂ Emissions 320 g/km
Particulate Filter (DPF) Absent
AdBlue Not Required

Awards and Recognition

  • null () — null

Comparison with competitors

Engine Brand Displacement Power Torque
M120 Mercedes-Benz 5,987 cc 394 hp 570 Nm

Pros

  • Smooth power delivery
  • Advanced technology for its time

Cons

  • High fuel consumption
  • Expensive maintenance