Car comparison

BMW 8 Series Convertible (G14) 840d · Stage 3vsBMW 8 Series Convertible (G14) 840d · Stage 2vsBMW 8 Series Convertible (G14) 840d · Stage 1vsBMW 8 Series Convertible (G14) 840d

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

New comparison
BMW logo

BMW 8 Series Convertible (G14)

840d (Stage 3)

496 hp2993 ccDieselAWDAutomaticTurbochargedCabriolet / convertible2019-2020
VS
BMW logo

BMW 8 Series Convertible (G14)

840d (Stage 2)

432 hp2993 ccDieselAWDAutomaticTurbochargedCabriolet / convertible2019-2020
VS
BMW logo

BMW 8 Series Convertible (G14)

840d (Stage 1)

384 hp2993 ccDieselAWDAutomaticTurbochargedCabriolet / convertible2019-2020
VS
BMW logo

BMW 8 Series Convertible (G14)

840d

320 hp2993 ccDieselAWDAutomaticTurbochargedCabriolet / convertible2019-2020

Comparison overview

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

Best choices

BMW 8 Series Convertible (G14) 840d (Stage 3) 496 hp

  • Quickest 0-100 km/h
    4.0 s
  • Fastest top speed
    295 km/h
    183 mph
  • Most powerful
    496 hp
    370 kW
  • Highest torque
    1,088 Nm
    802 lb-ft
  • Lightest
    1,955 kg
    4,310 lb
  • Best power-to-weight
    254 hp/t
    189 kW/t
    3.9 kg/hp
  • Lowest combined fuel consumption
    6.3 L/100 km
    37.3 mpg US
    44.8 mpg UK
  • Lowest city consumption
    7.4 L/100 km
    31.8 mpg US
    38.2 mpg UK
  • Lowest highway consumption
    5.6 L/100 km
    42.0 mpg US
    50.4 mpg UK
  • Lowest CO2 emissions
    166 g/km
  • Best estimated range
    1,048 km
    651 mi
  • Largest trunk
    350 L
  • Best overall score
    75/100
  • Best performance score
    88/100
  • Best economy score
    90/100
  • Best practicality score
    47/100

Specification comparison

Specification comparison
ModelBMW8 Series Convertible (G14)840d (Stage 3)496 hpBMW8 Series Convertible (G14)840d (Stage 2)432 hpBMW8 Series Convertible (G14)840d (Stage 1)384 hpBMW8 Series Convertible (G14)840d320 hp
Power
496hp370kW+176 hp
432hp322kW+112 hp
384hp286kW+64 hp
320hp239kW
Torque
1,088Nm802lb-ft+408 Nm
952Nm702lb-ft+272 Nm
850Nm627lb-ft+170 Nm
680Nm502lb-ft
Curb weight
1,955kg4,310lb
1,955kg4,310lb
1,955kg4,310lb
1,955kg4,310lb
Gross weight
2,485kg5,478lb
2,485kg5,478lb
2,485kg5,478lb
2,485kg5,478lb
Top speed
295 km/h
183 mph
+35 km/h
284 km/h
176 mph
+24 km/h
274 km/h
170 mph
+14 km/h
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
59.8s99% target: 292 km/h / 181 mph-16.4 s
Calculated
65.3s99% target: 281 km/h / 175 mph-10.9 s
Calculated
69.6s99% target: 271 km/h / 169 mph-6.6 s
Calculated
76.2s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.0s-1.3 s
4.3s-0.9 s
4.6s-0.6 s
5.2s
0-200 km/h
12.3s-7.2 s
Calculated
14.1s-5.3 s
Calculated
16.0s-3.5 s
Calculated
19.5s
Calculated
0-60 mph
3.8s-1.2 s
Calculated
4.1s-0.8 s
Calculated
4.4s-0.5 s
Calculated
4.9s
Calculated
Fuel consumption
6.3L/100 km37.3mpg US44.8mpg UK
6.3L/100 km37.3mpg US44.8mpg UK
6.3L/100 km37.3mpg US44.8mpg UK
6.3L/100 km37.3mpg US44.8mpg UK
Fuel consumption city
7.4L/100 km31.8mpg US38.2mpg UK
7.4L/100 km31.8mpg US38.2mpg UK
7.4L/100 km31.8mpg US38.2mpg UK
7.4L/100 km31.8mpg US38.2mpg UK
Fuel consumption highway
5.6L/100 km42mpg US50.4mpg UK
5.6L/100 km42mpg US50.4mpg UK
5.6L/100 km42mpg US50.4mpg UK
5.6L/100 km42mpg US50.4mpg UK
Quarter mile
11.9s-1.5 s
Calculated
12.3s-1.0 s
Calculated
12.7s-0.6 s
Calculated
13.4s
Calculated
Power-to-weight
254hp/t189kW/t115hp/1000 lb
Calculated
221hp/t165kW/t100hp/1000 lb
Calculated
196hp/t146kW/t89hp/1000 lb
Calculated
164hp/t122kW/t74hp/1000 lb
Calculated
Torque-to-weight
557Nm/t372lb-ft/ton
Calculated
487Nm/t326lb-ft/ton
Calculated
435Nm/t291lb-ft/ton
Calculated
348Nm/t233lb-ft/ton
Calculated
Estimated range
1,048km651mi
Calculated
1,048km651mi
Calculated
1,048km651mi
Calculated
1,048km651mi
Calculated
Displacement
2,993cc183cu in
2,993cc183cu in
2,993cc183cu in
2,993cc183cu in
Length
4,843mm191in
4,843mm191in
4,843mm191in
4,843mm191in
Width
1,902mm75in
1,902mm75in
1,902mm75in
1,902mm75in
Height
1,339mm53in
1,339mm53in
1,339mm53in
1,339mm53in
Wheelbase
2,822mm111in
2,822mm111in
2,822mm111in
2,822mm111in
Front track
1,619mm64in
1,619mm64in
1,619mm64in
1,619mm64in
Rear track
1,642mm65in
1,642mm65in
1,642mm65in
1,642mm65in
Ground clearance
118mm5in
118mm5in
118mm5in
118mm5in
Trunk volume
350L
350L
350L
350L
Doors
2
2
2
2
Seats
4
4
4
4
Fuel tank
66L
66L
66L
66L
CO2 emissions
166g/km
166g/km
166g/km
166g/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) 840d (Stage 3) 496 hpBMW 8 Series Convertible (G14) 840d (Stage 2) 432 hpBMW 8 Series Convertible (G14) 840d (Stage 1) 384 hpBMW 8 Series Convertible (G14) 840d 320 hpPowerTorque
  • BMW 8 Series Convertible (G14) 840d (Stage 3) 496 hp: Power / Torque
  • BMW 8 Series Convertible (G14) 840d (Stage 2) 432 hp: Power / Torque
  • BMW 8 Series Convertible (G14) 840d (Stage 1) 384 hp: Power / Torque
  • BMW 8 Series Convertible (G14) 840d 320 hp: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW8 Series Convertible (G14)840d (Stage 3)496 hp4,400 rpm1,750-2,250 rpm4,650 rpm
BMW8 Series Convertible (G14)840d (Stage 2)432 hp4,400 rpm1,750-2,250 rpm4,650 rpm
BMW8 Series Convertible (G14)840d (Stage 1)384 hp4,400 rpm1,750-2,250 rpm4,650 rpm
BMW8 Series Convertible (G14)840d320 hp4,400 rpm1,750-2,250 rpm4,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW8 Series Convertible (G14)840d (Stage 3)496 hpBMW8 Series Convertible (G14)840d (Stage 2)432 hpBMW8 Series Convertible (G14)840d (Stage 1)384 hpBMW8 Series Convertible (G14)840d320 hp
Acceleration checkpoints
0-60 mph
0-97 km/h
3.8 s
4.1 s
4.4 s
4.9 s
0-100 km/h
0-62 mph
4.0 s
4.3 s
4.6 s
5.2 s
0-200 km/h
0-124 mph
12.3 s
14.1 s
16.0 s
19.5 s
Top speed
295 km/h
183 mph
284 km/h
176 mph
274 km/h
170 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.0 s
2.0 s
2.1 s
2.2 s
330 ft
101 m
5.2 s
5.4 s
5.5 s
5.8 s
1/8 mile
201 m
7.8 s
8.1 s
8.3 s
8.7 s
1000 ft
305 m
10.0 s
10.4 s
10.7 s
11.2 s
1/4 mile
402 m
11.9 s
12.3 s
12.7 s
13.4 s
Trap speed
1/4 mile
402 m
197 km/h
122 mph
188 km/h
117 mph
181 km/h
112 mph
171 km/h
106 mph

Power comparison

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

BMW 8 Series Convertible (G14) 840d (Stage 3) 496 hp has 176 hp more than BMW 8 Series Convertible (G14) 840d 320 hp.

The biggest power difference is between BMW 8 Series Convertible (G14) 840d 320 hp and BMW 8 Series Convertible (G14) 840d (Stage 3) 496 hp: 176 hp (131 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)840d (Stage 3)496 hp
295 km/h
183 mph
BMW8 Series Convertible (G14)840d (Stage 2)432 hp
284 km/h
176 mph
BMW8 Series Convertible (G14)840d (Stage 1)384 hp
274 km/h
170 mph
BMW8 Series Convertible (G14)840d320 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) 840d (Stage 3) 496 hp and BMW 8 Series Convertible (G14) 840d 320 hp: 1.3 s.

The closest cars by acceleration are BMW 8 Series Convertible (G14) 840d (Stage 2) 432 hp and BMW 8 Series Convertible (G14) 840d (Stage 1) 384 hp, separated by only 0.3 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)840d (Stage 3)496 hp
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
BMW8 Series Convertible (G14)840d (Stage 2)432 hp
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
BMW8 Series Convertible (G14)840d (Stage 1)384 hp
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
BMW8 Series Convertible (G14)840d320 hp
6.3 L/100 km
37.3 mpg US
44.8 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)840d (Stage 3)496 hp
254 hp/t
189 kW/t
3.9 kg/hp
BMW8 Series Convertible (G14)840d (Stage 2)432 hp
221 hp/t
165 kW/t
4.5 kg/hp
BMW8 Series Convertible (G14)840d (Stage 1)384 hp
196 hp/t
146 kW/t
5.1 kg/hp
BMW8 Series Convertible (G14)840d320 hp
164 hp/t
122 kW/t
6.1 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)840d (Stage 3)496 hp
496 hp
370 kW
4.0 s
295 km/h
183 mph
BMW8 Series Convertible (G14)840d (Stage 2)432 hp
432 hp
322 kW
4.3 s
284 km/h
176 mph
BMW8 Series Convertible (G14)840d (Stage 1)384 hp
384 hp
286 kW
4.6 s
274 km/h
170 mph
BMW8 Series Convertible (G14)840d320 hp
320 hp
239 kW
5.2 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)840d (Stage 3)496 hp
Power
496 hp
370 kW
0-100 km/h4.0 s
Top speed
295 km/h
183 mph
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,843 mm
190.7 in
Height
1,339 mm
52.7 in
BMW8 Series Convertible (G14)840d (Stage 2)432 hp
Power
432 hp
322 kW
0-100 km/h4.3 s
Top speed
284 km/h
176 mph
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,843 mm
190.7 in
Height
1,339 mm
52.7 in
BMW8 Series Convertible (G14)840d (Stage 1)384 hp
Power
384 hp
286 kW
0-100 km/h4.6 s
Top speed
274 km/h
170 mph
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,843 mm
190.7 in
Height
1,339 mm
52.7 in
BMW8 Series Convertible (G14)840d320 hp
Power
320 hp
239 kW
0-100 km/h5.2 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
4,843 mm
190.7 in
Height
1,339 mm
52.7 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)840d (Stage 3)496 hp
Power
496 hp
370 kW
0-100 km/h4.0 s
Top speed
295 km/h
183 mph
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
BMW8 Series Convertible (G14)840d (Stage 2)432 hp
Power
432 hp
322 kW
0-100 km/h4.3 s
Top speed
284 km/h
176 mph
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
BMW8 Series Convertible (G14)840d (Stage 1)384 hp
Power
384 hp
286 kW
0-100 km/h4.6 s
Top speed
274 km/h
170 mph
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
BMW8 Series Convertible (G14)840d320 hp
Power
320 hp
239 kW
0-100 km/h5.2 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
6.3 L/100 km
37.3 mpg US
44.8 mpg UK

BMW 8 Series Convertible (G14) 840d (Stage 3) 496 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)840d (Stage 3)496 hp
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
4.0 s
BMW8 Series Convertible (G14)840d (Stage 2)432 hp
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
4.3 s
BMW8 Series Convertible (G14)840d (Stage 1)384 hp
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
4.6 s
BMW8 Series Convertible (G14)840d320 hp
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
5.2 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)840d (Stage 3)496 hp
254 hp/t
189 kW/t
3.9 kg/hp
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
BMW8 Series Convertible (G14)840d (Stage 2)432 hp
221 hp/t
165 kW/t
4.5 kg/hp
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
BMW8 Series Convertible (G14)840d (Stage 1)384 hp
196 hp/t
146 kW/t
5.1 kg/hp
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
BMW8 Series Convertible (G14)840d320 hp
164 hp/t
122 kW/t
6.1 kg/hp
6.3 L/100 km
37.3 mpg US
44.8 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW8 Series Convertible (G14)840d (Stage 3)496 hpBMW8 Series Convertible (G14)840d (Stage 2)432 hpBMW8 Series Convertible (G14)840d (Stage 1)384 hpBMW8 Series Convertible (G14)840d320 hp
Power
496 hp
370 kW
432 hp
322 kW
384 hp
286 kW
320 hp
239 kW
Torque
1,088 Nm
802 lb-ft
952 Nm
702 lb-ft
850 Nm
627 lb-ft
680 Nm
502 lb-ft
Acceleration
4.0 s
4.3 s
4.6 s
5.2 s
Top speed
295 km/h
183 mph
284 km/h
176 mph
274 km/h
170 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,955 kg
4,310 lb
1,955 kg
4,310 lb
1,955 kg
4,310 lb
1,955 kg
4,310 lb
Fuel consumption
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,843 mm
190.7 in
Height
1,339 mm
52.7 in
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,843 mm
190.7 in
Height
1,339 mm
52.7 in
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,843 mm
190.7 in
Height
1,339 mm
52.7 in
Doors/seats
2 doors
4 seats
Trunk
350 L
12.4 cu ft
Length
4,843 mm
190.7 in
Height
1,339 mm
52.7 in
Range score
1,048 km
651 mi
1,048 km
651 mi
1,048 km
651 mi
1,048 km
651 mi
CO2 score
166 g/km
166 g/km
166 g/km
166 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
254 hp/t
189 kW/t
3.9 kg/hp
221 hp/t
165 kW/t
4.5 kg/hp
196 hp/t
146 kW/t
5.1 kg/hp
164 hp/t
122 kW/t
6.1 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) 840d (Stage 3) 496 hpBMW 8 Series Convertible (G14) 840d (Stage 2) 432 hpBMW 8 Series Convertible (G14) 840d (Stage 1) 384 hpBMW 8 Series Convertible (G14) 840d 320 hp
Consumption6.3 L/100 km37.3 mpg US44.8 mpg UK6.3 L/100 km37.3 mpg US44.8 mpg UK6.3 L/100 km37.3 mpg US44.8 mpg UK6.3 L/100 km37.3 mpg US44.8 mpg UK
Cost / 100 km11.03 LC100 km11.03 LC100 km11.03 LC100 km11.03 LC100 km
Cost / 100 mi17.74 LC100 mi17.74 LC100 mi17.74 LC100 mi17.74 LC100 mi
Annual fuel used945 L250 US gal208 UK gal945 L250 US gal208 UK gal945 L250 US gal208 UK gal945 L250 US gal208 UK gal
Annual fuel cost1,654 LC/year1,654 LC/year1,654 LC/year1,654 LC/year

Head-to-head comparisons

BMW 8 Series Convertible (G14) 840d (Stage 3) 496 hp

  • Has 64 hp more
  • Has 136 Nm more
  • Is 0.4 s quicker from 0-100 km/h
  • Has 11 km/h (7 mph) higher top speed
  • Has 33 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) 840d
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BMW 8 Series Convertible (G14) 840d · Stage 3 vs BMW 8 Series Convertible (G14) 840d · Stage 2 vs BMW 8 Series Convertible (G14) 840d · Stage 1 vs BMW 8 Series Convertible (G14) 840d - car comparison - FastVsFaster