Car comparison

BMW 8 Series (G15) M850ivsBMW 8 Series (E31) 850Csi 5.6

Compare specs, acceleration, fuel consumption, dimensions, practicality, and estimated running costs side by side.

New comparison

BMW 8 Series (G15)

M850i

530 hp4395 ccGasolineAWDAutomaticTurbochargedCoupe2020-2022
VS

BMW 8 Series (E31)

850Csi 5.6

380 hp5576 ccGasolineRWDManualNaturally aspiratedCoupe1992-1996

Comparison overview

Use the estimates as comparison hints and verify exact figures before making decisions.

Best choices

BMW 8 Series (G15) M850i

  • Quickest 0-100 km/h
    3.8 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    530 hp
    395 kW
  • Highest torque
    750 Nm
    553 lb-ft
  • Best power-to-weight
    275 hp/t
    205 kW/t
    3.6 kg/hp
  • Lowest combined fuel consumption
    10.0 L/100 km
    23.5 mpg US
    28.2 mpg UK
  • Largest trunk
    420 L
  • Best overall score
    75/100
  • Best performance score
    86/100
  • Best economy score
    80/100
  • Best practicality score
    52/100

Specification comparison

Specification comparison
ModelBMW8 Series (G15)M850iBMW8 Series (E31)850Csi 5.6
Power
530hp395kW
380hp283kW
Torque
750Nm553lb-ft
550Nm406lb-ft
Curb weight
1,930kg4,255lb
1,900kg4,189lb
Gross weight
2,395kg5,280lb
2,340kg5,159lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
49.9s99% target: 262 km/h / 163 mph
Calculated
83.2s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
3.8s
6.0s
0-200 km/h
13.0s
Calculated
21.1s
Calculated
0-60 mph
3.6s
Calculated
5.7s
Calculated
Fuel consumption
10L/100 km23.5mpg US28.2mpg UK
12.8L/100 km18.4mpg US22.1mpg UK
Fuel consumption city
14L/100 km16.8mpg US20.2mpg UK
-
Fuel consumption highway
7.7L/100 km30.5mpg US36.7mpg UK
-
Quarter mile
11.8s
Calculated
14.1s
Calculated
Power-to-weight
275hp/t205kW/t125hp/1000 lb
Calculated
200hp/t149kW/t91hp/1000 lb
Calculated
Torque-to-weight
389Nm/t260lb-ft/ton
Calculated
289Nm/t194lb-ft/ton
Calculated
Estimated range
680km423mi
Calculated
703km437mi
Calculated
Displacement
4,395cc268cu in
5,576cc340cu in
Length
4,851mm191in
4,780mm188in
Width
1,902mm75in
1,855mm73in
Height
1,346mm53in
1,330mm52in
Wheelbase
2,822mm111in
2,684mm106in
Front track
1,627mm64in
1,554mm61in
Rear track
1,642mm65in
1,562mm61in
Ground clearance
128mm5in
-
Trunk volume
420L
320L
Doors
2
2
Seats
4
4
Fuel tank
68L
90L

Performance charts

Use the estimates as comparison hints and verify exact figures before making decisions.

Dyno simulation

Estimated stock-style power and torque curves by engine speed.

BMW 8 Series (G15) M850iBMW 8 Series (E31) 850Csi 5.6PowerTorque
  • BMW 8 Series (G15) M850i: Power / Torque
  • BMW 8 Series (E31) 850Csi 5.6: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW8 Series (G15)M850i5,500-6,000 rpm1,800-4,600 rpm6,250 rpm
BMW8 Series (E31)850Csi 5.65,300 rpm4,000 rpm5,550 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW8 Series (G15)M850iBMW8 Series (E31)850Csi 5.6
Acceleration checkpoints
0-60 mph
0-97 km/h
3.6 s
5.7 s
0-100 km/h
0-62 mph
3.8 s
6.0 s
0-200 km/h
0-124 mph
13.0 s
21.1 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
1.9 s
2.4 s
330 ft
101 m
5.1 s
6.2 s
1/8 mile
201 m
7.7 s
9.2 s
1000 ft
305 m
9.9 s
11.9 s
1/4 mile
402 m
11.8 s
14.1 s
Trap speed
1/4 mile
402 m
192 km/h
119 mph
167 km/h
103 mph

Power comparison

Bar comparison chart for Power. Higher is better · hp / kW

Chart data table
VehicleValue
BMW8 Series (G15)M850i
530 hp
395 kW
BMW8 Series (E31)850Csi 5.6
380 hp
283 kW

BMW 8 Series (G15) M850i has 150 hp more than BMW 8 Series (E31) 850Csi 5.6.

The biggest power difference is between BMW 8 Series (E31) 850Csi 5.6 and BMW 8 Series (G15) M850i: 150 hp (112 kW).

Torque comparison

Bar comparison chart for Torque. Higher is better · Nm / lb-ft

Chart data table
VehicleValue
BMW8 Series (G15)M850i
750 Nm
553 lb-ft
BMW8 Series (E31)850Csi 5.6
550 Nm
406 lb-ft

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / lb

Chart data table
VehicleValue
BMW8 Series (G15)M850i
1,930 kg
4,255 lb
BMW8 Series (E31)850Csi 5.6
1,900 kg
4,189 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
BMW8 Series (G15)M850i
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
BMW8 Series (E31)850Csi 5.6
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
BMW8 Series (G15)M850i3.8 s
BMW8 Series (E31)850Csi 5.66.0 s

The biggest 0-100 km/h difference is between BMW 8 Series (G15) M850i and BMW 8 Series (E31) 850Csi 5.6: 2.2 s.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
BMW8 Series (G15)M850i
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
BMW8 Series (E31)850Csi 5.6
12.8 L/100 km
18.4 mpg US
22.1 mpg UK

The biggest fuel consumption difference is between BMW 8 Series (G15) M850i and BMW 8 Series (E31) 850Csi 5.6: 2.8 L/100 km.

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
VehicleValue
BMW8 Series (G15)M850i
275 hp/t
205 kW/t
3.6 kg/hp
BMW8 Series (E31)850Csi 5.6
200 hp/t
149 kW/t
5.0 kg/hp

Estimated range comparison

Bar comparison chart for Estimated range. Higher is better · km / mi

Chart data table
VehicleValue
BMW8 Series (G15)M850i
680 km
423 mi
BMW8 Series (E31)850Csi 5.6
703 km
437 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW8 Series (G15)M850i
530 hp
395 kW
3.8 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
BMW8 Series (E31)850Csi 5.6
380 hp
283 kW
6.0 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph

Most attractive quadrant

Scatter chart with performance score on the X axis and practicality score on the Y axis.

Chart data table
VehiclePerformance scorePracticality score
BMW8 Series (G15)M850i
Power
530 hp
395 kW
0-100 km/h3.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
420 L
14.8 cu ft
Length
4,851 mm
191.0 in
Height
1,346 mm
53.0 in
BMW8 Series (E31)850Csi 5.6
Power
380 hp
283 kW
0-100 km/h6.0 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
320 L
11.3 cu ft
Length
4,780 mm
188.2 in
Height
1,330 mm
52.4 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
BMW8 Series (G15)M850i
Power
530 hp
395 kW
0-100 km/h3.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
BMW8 Series (E31)850Csi 5.6
Power
380 hp
283 kW
0-100 km/h6.0 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
12.8 L/100 km
18.4 mpg US
22.1 mpg UK

BMW 8 Series (G15) M850i is closest to the top-right balance target for performance and fuel economy.

Acceleration vs fuel consumption

Cars closer to the lower-left corner offer a better mix of quick acceleration and low fuel consumption.

Acceleration vs fuel consumption data table
VehicleFuel consumption, L/100 km0-100 km/h, s
BMW8 Series (G15)M850i
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
3.8 s
BMW8 Series (E31)850Csi 5.6
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
6.0 s

Power-to-weight vs fuel consumption

The shaded area favors higher power-to-weight with lower combined fuel consumption.

Power-to-weight vs fuel consumption data table
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
BMW8 Series (G15)M850i
275 hp/t
205 kW/t
3.6 kg/hp
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
BMW8 Series (E31)850Csi 5.6
200 hp/t
149 kW/t
5.0 kg/hp
12.8 L/100 km
18.4 mpg US
22.1 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW8 Series (G15)M850iBMW8 Series (E31)850Csi 5.6
Power
530 hp
395 kW
380 hp
283 kW
Torque
750 Nm
553 lb-ft
550 Nm
406 lb-ft
Acceleration
3.8 s
6.0 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,930 kg
4,255 lb
1,900 kg
4,189 lb
Fuel consumption
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
420 L
14.8 cu ft
Length
4,851 mm
191.0 in
Height
1,346 mm
53.0 in
Doors/seats
2 doors
4 seats
Trunk
320 L
11.3 cu ft
Length
4,780 mm
188.2 in
Height
1,330 mm
52.4 in
Range score
680 km
423 mi
703 km
437 mi
Trunk score
420 L
14.8 cu ft
320 L
11.3 cu ft
Power-to-weight score
275 hp/t
205 kW/t
3.6 kg/hp
200 hp/t
149 kW/t
5.0 kg/hp
Overall
Fixed score
Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Enter the fuel price in your local currency, for example €/L, $/gal, £/L or any other local currency.

LC = Local Currency

Fuel cost and annual usage
VehicleBMW 8 Series (G15) M850iBMW 8 Series (E31) 850Csi 5.6
Consumption10 L/100 km23.5 mpg US28.2 mpg UK12.8 L/100 km18.4 mpg US22.1 mpg UK
Cost / 100 km17.50 LC100 km22.40 LC100 km
Cost / 100 mi28.16 LC100 mi36.05 LC100 mi
Annual fuel used1,500 L396 US gal330 UK gal1,920 L507 US gal422 UK gal
Annual fuel cost2,625 LC/year3,360 LC/year

Head-to-head comparisons

BMW 8 Series (G15) M850i

  • Has 150 hp more
  • Has 200 Nm more
  • Is 2.2 s quicker from 0-100 km/h
  • Uses 2.8 L/100 km less fuel
  • Has 75 hp/t better power-to-weight
  • Has 100 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Largest trunk

Cons

  • Heaviest

BMW 8 Series (E31) 850Csi 5.6

  • Is 30 kg lighter
  • Has 23 km (14 mi) more estimated range

Pros

  • Lightest
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Highest combined fuel consumption
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 8 Series (G15) M850i
BMW 8 Series (E31) 850Csi 5.6
Compare selected cars
2 vehicles selected

Popular comparisons

M850i
M850i V8
VS
BMW8 Series (G15)M850ivsBMW8 Series Gran Coupe (G16)M850i V8
850Csi 5.6
840i
VS
BMW8 Series (E31)850Csi 5.6vsBMW8 Series (G15)840i
M850i
850Ci 5.4
VS
BMW8 Series (G15)M850ivsBMW8 Series (E31)850Ci 5.4
M850i
Competition 3.0
VS
BMW8 Series (G15)M850ivsBMWM4 (G82)Competition 3.0
850Csi 5.6
GT 3.0
VS
BMW8 Series (E31)850Csi 5.6vsBMWM3 Coupe (E36)GT 3.0
M850i
M50 83.9 kWh
VS
BMW8 Series (G15)M850ivsBMWi4 (G26)M50 83.9 kWh
850Csi 5.6
S 600 V12
VS
BMW8 Series (E31)850Csi 5.6vsMercedes-BenzS-class Coupe (C140)S 600 V12
M850i
4.4 V8
VS
BMW8 Series (G15)M850ivsBMWM8 Gran Coupe (F93)4.4 V8
850Csi 5.6
3.2i 24V
VS
BMW8 Series (E31)850Csi 5.6vsBMWM3 Coupe (E46)3.2i 24V
M850i
4.4 V8
VS
BMW8 Series (G15)M850ivsBMWM8 Coupe (F92)4.4 V8
850Csi 5.6
3.2
VS
BMW8 Series (E31)850Csi 5.6vsBMWZ3 M Coupe (E36/8)3.2
M850i
3.0
VS
BMW8 Series (G15)M850ivsBMWM2 (G87)3.0
BMW 8 Series (G15) M850i vs BMW 8 Series (E31) 850Csi 5.6 - car comparison - FastVsFaster