Car comparison

BMW 8 Series (G15) M850ivsBMW 8 Series (E31) 850Ci 5.4

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

New comparison

BMW 8 Series (G15)

M850i

530 hp4395 ccGasolineAWDAutomaticTurbochargedCoupe2018-2020
VS

BMW 8 Series (E31)

850Ci 5.4

326 hp5379 ccGasolineRWDAutomaticNaturally aspiratedCoupe1994-1999

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
    3.7 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
    280 hp/t
    209 kW/t
    3.6 kg/hp
  • Largest trunk
    420 L
  • Best overall score
    75/100
  • Best performance score
    86/100
  • Best economy score
    79/100
  • Best practicality score
    52/100

Specification comparison

Specification comparison
ModelBMW8 Series (G15)M850iBMW8 Series (E31)850Ci 5.4
Power
530hp395kW
326hp243kW
Torque
750Nm553lb-ft
490Nm361lb-ft
Curb weight
1,890kg4,167lb
1,880kg4,145lb
Gross weight
2,395kg5,280lb
2,300kg5,071lb
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
48.6s99% target: 262 km/h / 163 mph
Calculated
90.9s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
3.7s
6.3s
0-200 km/h
12.7s
Calculated
22.6s
Calculated
0-60 mph
3.5s
Calculated
6.0s
Calculated
Fuel consumption
10.5L/100 km22.4mpg US26.9mpg UK
-
Fuel consumption city-
21.1L/100 km11.1mpg US13.4mpg UK
Fuel consumption highway-
9.9L/100 km23.8mpg US28.5mpg UK
Quarter mile
11.7s
Calculated
14.3s
Calculated
Power-to-weight
280hp/t209kW/t127hp/1000 lb
Calculated
173hp/t129kW/t79hp/1000 lb
Calculated
Torque-to-weight
397Nm/t266lb-ft/ton
Calculated
261Nm/t174lb-ft/ton
Calculated
Estimated range
648km402mi
Calculated
-
Displacement
4,395cc268cu in
5,379cc328cu in
Length
4,851mm191in
4,780mm188in
Width
1,902mm75in
1,855mm73in
Height
1,346mm53in
1,340mm53in
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
CO2 emissions
240g/km
-

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) 850Ci 5.4PowerTorque
  • BMW 8 Series (G15) M850i: Power / Torque
  • BMW 8 Series (E31) 850Ci 5.4: 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)850Ci 5.45,000 rpm3,900 rpm5,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW8 Series (G15)M850iBMW8 Series (E31)850Ci 5.4
Acceleration checkpoints
0-60 mph
0-97 km/h
3.5 s
6.0 s
0-100 km/h
0-62 mph
3.7 s
6.3 s
0-200 km/h
0-124 mph
12.7 s
22.6 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
6.3 s
1/8 mile
201 m
7.6 s
9.4 s
1000 ft
305 m
9.8 s
12.1 s
1/4 mile
402 m
11.7 s
14.3 s
Trap speed
1/4 mile
402 m
194 km/h
120 mph
163 km/h
101 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)850Ci 5.4
326 hp
243 kW

BMW 8 Series (G15) M850i has 204 hp more than BMW 8 Series (E31) 850Ci 5.4.

The biggest power difference is between BMW 8 Series (E31) 850Ci 5.4 and BMW 8 Series (G15) M850i: 204 hp (152 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)850Ci 5.4
490 Nm
361 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW8 Series (G15)M850i
1,890 kg
4,167 lb
BMW8 Series (E31)850Ci 5.4
1,880 kg
4,145 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)850Ci 5.4
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)M850i3.7 s
BMW8 Series (E31)850Ci 5.46.3 s

The biggest 0-100 km/h difference is between BMW 8 Series (G15) M850i and BMW 8 Series (E31) 850Ci 5.4: 2.6 s.

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
280 hp/t
209 kW/t
3.6 kg/hp
BMW8 Series (E31)850Ci 5.4
173 hp/t
129 kW/t
5.8 kg/hp

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
3.7 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
BMW8 Series (E31)850Ci 5.4
326 hp
243 kW
6.3 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/h3.7 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)850Ci 5.4
Power
326 hp
243 kW
0-100 km/h6.3 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
1,340 mm
52.8 in

Detailed score breakdown

Detailed score breakdown
VehicleBMW8 Series (G15)M850iBMW8 Series (E31)850Ci 5.4
Power
530 hp
395 kW
326 hp
243 kW
Torque
750 Nm
553 lb-ft
490 Nm
361 lb-ft
Acceleration
3.7 s
6.3 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,890 kg
4,167 lb
1,880 kg
4,145 lb
Fuel consumption
10.5 L/100 km
22.4 mpg US
26.9 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
1,340 mm
52.8 in
Range score
648 km
402 mi
-
CO2 score
240 g/km
-
Trunk score
420 L
14.8 cu ft
320 L
11.3 cu ft
Power-to-weight score
280 hp/t
209 kW/t
3.6 kg/hp
173 hp/t
129 kW/t
5.8 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) M850i
Consumption10.5 L/100 km22.4 mpg US26.9 mpg UK
Cost / 100 km18.38 LC100 km
Cost / 100 mi29.57 LC100 mi
Annual fuel used1,575 L416 US gal346 UK gal
Annual fuel cost2,756 LC/year

Head-to-head comparisons

BMW 8 Series (G15) M850i

  • Has 204 hp more
  • Has 260 Nm more
  • Is 2.6 s quicker from 0-100 km/h
  • Has 107 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
  • Best power-to-weight ratio
  • Largest trunk

Cons

  • Heaviest

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 8 Series (G15) M850i
BMW 8 Series (E31) 850Ci 5.4
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BMW 8 Series (G15) M850i vs BMW 8 Series (E31) 850Ci 5.4 - car comparison - FastVsFaster