Car comparison

BMW 8 Series Convertible (G14) M850i · Stage 3vsBMW 8 Series Convertible (G14) M850i · Stage 2vsBMW 8 Series Convertible (G14) M850i · Stage 1vsBMW 8 Series Convertible (G14) M850i

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

New comparison
BMW logo

BMW 8 Series Convertible (G14)

M850i (Stage 3)

795 hp4395 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2019-2020
VS
BMW logo

BMW 8 Series Convertible (G14)

M850i (Stage 2)

689 hp4395 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2019-2020
VS
BMW logo

BMW 8 Series Convertible (G14)

M850i (Stage 1)

625 hp4395 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2019-2020
VS
BMW logo

BMW 8 Series Convertible (G14)

M850i

530 hp4395 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2019-2020

Comparison overview

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

Best choices

BMW 8 Series Convertible (G14) M850i (Stage 3) 795 hp

  • Quickest 0-100 km/h
    3.0 s
  • Fastest top speed
    292 km/h
    181 mph
  • Most powerful
    795 hp
    593 kW
  • Highest torque
    1,163 Nm
    857 lb-ft
  • Lightest
    2,015 kg
    4,442 lb
  • Best power-to-weight
    395 hp/t
    294 kW/t
    2.5 kg/hp
  • Lowest combined fuel consumption
    10.0 L/100 km
    23.5 mpg US
    28.2 mpg UK
  • Lowest city consumption
    13.6 L/100 km
    17.3 mpg US
    20.8 mpg UK
  • Lowest highway consumption
    8.0 L/100 km
    29.4 mpg US
    35.3 mpg UK
  • Lowest CO2 emissions
    229 g/km
  • Best estimated range
    680 km
    423 mi
  • Largest trunk
    350 L
  • Best overall score
    76/100
  • Best performance score
    90/100
  • Best economy score
    80/100
  • Best practicality score
    47/100

Specification comparison

Specification comparison
ModelBMW8 Series Convertible (G14)M850i (Stage 3)795 hpBMW8 Series Convertible (G14)M850i (Stage 2)689 hpBMW8 Series Convertible (G14)M850i (Stage 1)625 hpBMW8 Series Convertible (G14)M850i530 hp
Power
795hp593kW+265 hp
689hp514kW+159 hp
625hp466kW+95 hp
530hp395kW
Torque
1,163Nm857lb-ft+413 Nm
1,013Nm747lb-ft+263 Nm
915Nm675lb-ft+165 Nm
750Nm553lb-ft
Curb weight
2,015kg4,442lb
2,015kg4,442lb
2,015kg4,442lb
2,015kg4,442lb
Gross weight
2,515kg5,545lb
2,515kg5,545lb
2,515kg5,545lb
2,515kg5,545lb
Top speed
292 km/h
181 mph
+32 km/h
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
+30 km/h
Calculated
273 km/h
170 mph
+13 km/h
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
37.7s99% target: 289 km/h / 180 mph-12.6 s
Calculated
44.1s99% target: 287 km/h / 178 mph-6.2 s
Calculated
45.3s99% target: 270 km/h / 168 mph-5.1 s
Calculated
50.3s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
3.0s-0.9 s
3.3s-0.6 s
3.5s-0.4 s
3.9s
0-200 km/h
8.8s-4.9 s
Calculated
10.0s-3.7 s
Calculated
11.4s-2.3 s
Calculated
13.7s
Calculated
0-60 mph
2.9s-0.8 s
Calculated
3.2s-0.5 s
Calculated
3.4s-0.4 s
Calculated
3.7s
Calculated
Fuel consumption
10L/100 km23.5mpg US28.2mpg UK
10L/100 km23.5mpg US28.2mpg UK
10L/100 km23.5mpg US28.2mpg UK
10L/100 km23.5mpg US28.2mpg UK
Fuel consumption city
13.6L/100 km17.3mpg US20.8mpg UK
13.6L/100 km17.3mpg US20.8mpg UK
13.6L/100 km17.3mpg US20.8mpg UK
13.6L/100 km17.3mpg US20.8mpg UK
Fuel consumption highway
8L/100 km29.4mpg US35.3mpg UK
8L/100 km29.4mpg US35.3mpg UK
8L/100 km29.4mpg US35.3mpg UK
8L/100 km29.4mpg US35.3mpg UK
Quarter mile
10.6s-1.4 s
Calculated
11.0s-0.9 s
Calculated
11.4s-0.6 s
Calculated
12.0s
Calculated
Power-to-weight
395hp/t294kW/t179hp/1000 lb
Calculated
342hp/t255kW/t155hp/1000 lb
Calculated
310hp/t231kW/t141hp/1000 lb
Calculated
263hp/t196kW/t119hp/1000 lb
Calculated
Torque-to-weight
577Nm/t386lb-ft/ton
Calculated
502Nm/t336lb-ft/ton
Calculated
454Nm/t304lb-ft/ton
Calculated
372Nm/t249lb-ft/ton
Calculated
Estimated range
680km423mi
Calculated
680km423mi
Calculated
680km423mi
Calculated
680km423mi
Calculated
Displacement
4,395cc268cu in
4,395cc268cu in
4,395cc268cu in
4,395cc268cu in
Length
4,851mm191in
4,851mm191in
4,851mm191in
4,851mm191in
Width
1,902mm75in
1,902mm75in
1,902mm75in
1,902mm75in
Height
1,345mm53in
1,345mm53in
1,345mm53in
1,345mm53in
Wheelbase
2,822mm111in
2,822mm111in
2,822mm111in
2,822mm111in
Front track
1,627mm64in
1,627mm64in
1,627mm64in
1,627mm64in
Rear track
1,642mm65in
1,642mm65in
1,642mm65in
1,642mm65in
Ground clearance
125mm5in
125mm5in
125mm5in
125mm5in
Trunk volume
350L
350L
350L
350L
Doors
2
2
2
2
Seats
4
4
4
4
Fuel tank
68L
68L
68L
68L
CO2 emissions
229g/km
229g/km
229g/km
229g/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 Convertible (G14) M850i (Stage 3) 795 hpBMW 8 Series Convertible (G14) M850i (Stage 2) 689 hpBMW 8 Series Convertible (G14) M850i (Stage 1) 625 hpBMW 8 Series Convertible (G14) M850i 530 hpPowerTorque
  • BMW 8 Series Convertible (G14) M850i (Stage 3) 795 hp: Power / Torque
  • BMW 8 Series Convertible (G14) M850i (Stage 2) 689 hp: Power / Torque
  • BMW 8 Series Convertible (G14) M850i (Stage 1) 625 hp: Power / Torque
  • BMW 8 Series Convertible (G14) M850i 530 hp: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW8 Series Convertible (G14)M850i (Stage 3)795 hp5,500-6,000 rpm1,800-4,600 rpm6,250 rpm
BMW8 Series Convertible (G14)M850i (Stage 2)689 hp5,500-6,000 rpm1,800-4,600 rpm6,250 rpm
BMW8 Series Convertible (G14)M850i (Stage 1)625 hp5,500-6,000 rpm1,800-4,600 rpm6,250 rpm
BMW8 Series Convertible (G14)M850i530 hp5,500-6,000 rpm1,800-4,600 rpm6,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW8 Series Convertible (G14)M850i (Stage 3)795 hpBMW8 Series Convertible (G14)M850i (Stage 2)689 hpBMW8 Series Convertible (G14)M850i (Stage 1)625 hpBMW8 Series Convertible (G14)M850i530 hp
Acceleration checkpoints
0-60 mph
0-97 km/h
2.9 s
3.2 s
3.4 s
3.7 s
0-100 km/h
0-62 mph
3.0 s
3.3 s
3.5 s
3.9 s
0-200 km/h
0-124 mph
8.8 s
10.0 s
11.4 s
13.7 s
Top speed
292 km/h
181 mph
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
Likely limited
273 km/h
170 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
1.8 s
1.9 s
1.9 s
2.0 s
330 ft
101 m
4.7 s
4.8 s
5.0 s
5.2 s
1/8 mile
201 m
7.0 s
7.2 s
7.5 s
7.8 s
1000 ft
305 m
8.9 s
9.3 s
9.6 s
10.1 s
1/4 mile
402 m
10.6 s
11.0 s
11.4 s
12.0 s
Trap speed
1/4 mile
402 m
219 km/h
136 mph
210 km/h
130 mph
200 km/h
124 mph
189 km/h
118 mph

Power comparison

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

BMW 8 Series Convertible (G14) M850i (Stage 3) 795 hp has 265 hp more than BMW 8 Series Convertible (G14) M850i 530 hp.

The biggest power difference is between BMW 8 Series Convertible (G14) M850i 530 hp and BMW 8 Series Convertible (G14) M850i (Stage 3) 795 hp: 265 hp (198 kW).

Torque comparison

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

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / 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 Convertible (G14)M850i (Stage 3)795 hp
292 km/h
181 mph
BMW8 Series Convertible (G14)M850i (Stage 2)689 hp
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
BMW8 Series Convertible (G14)M850i (Stage 1)625 hp
273 km/h
170 mph
BMW8 Series Convertible (G14)M850i530 hp
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph

0-100 km/h comparison

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

The biggest 0-100 km/h difference is between BMW 8 Series Convertible (G14) M850i (Stage 3) 795 hp and BMW 8 Series Convertible (G14) M850i 530 hp: 0.9 s.

The closest cars by acceleration are BMW 8 Series Convertible (G14) M850i (Stage 2) 689 hp and BMW 8 Series Convertible (G14) M850i (Stage 1) 625 hp, separated by only 0.2 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 Convertible (G14)M850i (Stage 3)795 hp
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
BMW8 Series Convertible (G14)M850i (Stage 2)689 hp
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
BMW8 Series Convertible (G14)M850i (Stage 1)625 hp
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
BMW8 Series Convertible (G14)M850i530 hp
10.0 L/100 km
23.5 mpg US
28.2 mpg UK

Power-to-weight comparison

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

Chart data table
VehicleValue
BMW8 Series Convertible (G14)M850i (Stage 3)795 hp
395 hp/t
294 kW/t
2.5 kg/hp
BMW8 Series Convertible (G14)M850i (Stage 2)689 hp
342 hp/t
255 kW/t
2.9 kg/hp
BMW8 Series Convertible (G14)M850i (Stage 1)625 hp
310 hp/t
231 kW/t
3.2 kg/hp
BMW8 Series Convertible (G14)M850i530 hp
263 hp/t
196 kW/t
3.8 kg/hp

Estimated range comparison

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

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW8 Series Convertible (G14)M850i (Stage 3)795 hp
795 hp
593 kW
3.0 s
292 km/h
181 mph
BMW8 Series Convertible (G14)M850i (Stage 2)689 hp
689 hp
514 kW
3.3 s
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
BMW8 Series Convertible (G14)M850i (Stage 1)625 hp
625 hp
466 kW
3.5 s
273 km/h
170 mph
BMW8 Series Convertible (G14)M850i530 hp
530 hp
395 kW
3.9 s
Unrestricted
260 km/h162 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 Convertible (G14)M850i (Stage 3)795 hp
Power
795 hp
593 kW
0-100 km/h3.0 s
Top speed
292 km/h
181 mph
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,851 mm
191.0 in
Height
1,345 mm
53.0 in
BMW8 Series Convertible (G14)M850i (Stage 2)689 hp
Power
689 hp
514 kW
0-100 km/h3.3 s
Top speed
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,851 mm
191.0 in
Height
1,345 mm
53.0 in
BMW8 Series Convertible (G14)M850i (Stage 1)625 hp
Power
625 hp
466 kW
0-100 km/h3.5 s
Top speed
273 km/h
170 mph
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,851 mm
191.0 in
Height
1,345 mm
53.0 in
BMW8 Series Convertible (G14)M850i530 hp
Power
530 hp
395 kW
0-100 km/h3.9 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,851 mm
191.0 in
Height
1,345 mm
53.0 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 Convertible (G14)M850i (Stage 3)795 hp
Power
795 hp
593 kW
0-100 km/h3.0 s
Top speed
292 km/h
181 mph
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
BMW8 Series Convertible (G14)M850i (Stage 2)689 hp
Power
689 hp
514 kW
0-100 km/h3.3 s
Top speed
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
BMW8 Series Convertible (G14)M850i (Stage 1)625 hp
Power
625 hp
466 kW
0-100 km/h3.5 s
Top speed
273 km/h
170 mph
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
BMW8 Series Convertible (G14)M850i530 hp
Power
530 hp
395 kW
0-100 km/h3.9 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
10.0 L/100 km
23.5 mpg US
28.2 mpg UK

BMW 8 Series Convertible (G14) M850i (Stage 3) 795 hp 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 Convertible (G14)M850i (Stage 3)795 hp
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
3.0 s
BMW8 Series Convertible (G14)M850i (Stage 2)689 hp
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
3.3 s
BMW8 Series Convertible (G14)M850i (Stage 1)625 hp
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
3.5 s
BMW8 Series Convertible (G14)M850i530 hp
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
3.9 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 Convertible (G14)M850i (Stage 3)795 hp
395 hp/t
294 kW/t
2.5 kg/hp
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
BMW8 Series Convertible (G14)M850i (Stage 2)689 hp
342 hp/t
255 kW/t
2.9 kg/hp
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
BMW8 Series Convertible (G14)M850i (Stage 1)625 hp
310 hp/t
231 kW/t
3.2 kg/hp
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
BMW8 Series Convertible (G14)M850i530 hp
263 hp/t
196 kW/t
3.8 kg/hp
10.0 L/100 km
23.5 mpg US
28.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW8 Series Convertible (G14)M850i (Stage 3)795 hpBMW8 Series Convertible (G14)M850i (Stage 2)689 hpBMW8 Series Convertible (G14)M850i (Stage 1)625 hpBMW8 Series Convertible (G14)M850i530 hp
Power
795 hp
593 kW
689 hp
514 kW
625 hp
466 kW
530 hp
395 kW
Torque
1,163 Nm
857 lb-ft
1,013 Nm
747 lb-ft
915 Nm
675 lb-ft
750 Nm
553 lb-ft
Acceleration
3.0 s
3.3 s
3.5 s
3.9 s
Top speed
292 km/h
181 mph
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
273 km/h
170 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
2,015 kg
4,442 lb
2,015 kg
4,442 lb
2,015 kg
4,442 lb
2,015 kg
4,442 lb
Fuel consumption
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
10.0 L/100 km
23.5 mpg US
28.2 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,851 mm
191.0 in
Height
1,345 mm
53.0 in
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,851 mm
191.0 in
Height
1,345 mm
53.0 in
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,851 mm
191.0 in
Height
1,345 mm
53.0 in
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,851 mm
191.0 in
Height
1,345 mm
53.0 in
Range score
680 km
423 mi
680 km
423 mi
680 km
423 mi
680 km
423 mi
CO2 score
229 g/km
229 g/km
229 g/km
229 g/km
Trunk score
350 L
12.4 cu ft
350 L
12.4 cu ft
350 L
12.4 cu ft
350 L
12.4 cu ft
Power-to-weight score
395 hp/t
294 kW/t
2.5 kg/hp
342 hp/t
255 kW/t
2.9 kg/hp
310 hp/t
231 kW/t
3.2 kg/hp
263 hp/t
196 kW/t
3.8 kg/hp
Overall
Fixed score
Fixed score
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 Convertible (G14) M850i (Stage 3) 795 hpBMW 8 Series Convertible (G14) M850i (Stage 2) 689 hpBMW 8 Series Convertible (G14) M850i (Stage 1) 625 hpBMW 8 Series Convertible (G14) M850i 530 hp
Consumption10 L/100 km23.5 mpg US28.2 mpg UK10 L/100 km23.5 mpg US28.2 mpg UK10 L/100 km23.5 mpg US28.2 mpg UK10 L/100 km23.5 mpg US28.2 mpg UK
Cost / 100 km17.50 LC100 km17.50 LC100 km17.50 LC100 km17.50 LC100 km
Cost / 100 mi28.16 LC100 mi28.16 LC100 mi28.16 LC100 mi28.16 LC100 mi
Annual fuel used1,500 L396 US gal330 UK gal1,500 L396 US gal330 UK gal1,500 L396 US gal330 UK gal1,500 L396 US gal330 UK gal
Annual fuel cost2,625 LC/year2,625 LC/year2,625 LC/year2,625 LC/year

Head-to-head comparisons

BMW 8 Series Convertible (G14) M850i (Stage 3) 795 hp

  • Has 106 hp more
  • Has 150 Nm more
  • Is 0.3 s quicker from 0-100 km/h
  • Has 2 km/h (1 mph) higher top speed
  • Has 53 hp/t better power-to-weight

Pros

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

Cons

  • Highest CO2 emissions

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BMW 8 Series Convertible (G14) M850i
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BMW 8 Series Convertible (G14) M850i · Stage 3 vs BMW 8 Series Convertible (G14) M850i · Stage 2 vs BMW 8 Series Convertible (G14) M850i · Stage 1 vs BMW 8 Series Convertible (G14) M850i - car comparison - FastVsFaster