Car comparison

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

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

New comparison
BMW logo

BMW 8 Series Convertible (G14)

840i (Stage 3)

499 hp2998 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2020-2022
VS
BMW logo

BMW 8 Series Convertible (G14)

840i (Stage 2)

433 hp2998 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2020-2022
VS
BMW logo

BMW 8 Series Convertible (G14)

840i (Stage 1)

393 hp2998 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2020-2022
VS
BMW logo

BMW 8 Series Convertible (G14)

840i

333 hp2998 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2020-2022

Comparison overview

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

Best choices

BMW 8 Series Convertible (G14) 840i (Stage 3) 499 hp

  • Quickest 0-100 km/h
    4.0 s
  • Fastest top speed
    292 km/h
    181 mph
  • Most powerful
    499 hp
    372 kW
  • Highest torque
    775 Nm
    572 lb-ft
  • Lightest
    1,915 kg
    4,222 lb
  • Best power-to-weight
    261 hp/t
    195 kW/t
    3.8 kg/hp
  • Lowest combined fuel consumption
    8.0 L/100 km
    29.4 mpg US
    35.3 mpg UK
  • Lowest city consumption
    10.2 L/100 km
    23.1 mpg US
    27.7 mpg UK
  • Lowest highway consumption
    6.7 L/100 km
    35.1 mpg US
    42.2 mpg UK
  • Best estimated range
    850 km
    528 mi
  • Largest trunk
    350 L
  • Best overall score
    75/100
  • Best performance score
    88/100
  • Best economy score
    85/100
  • Best practicality score
    47/100

Specification comparison

Specification comparison
ModelBMW8 Series Convertible (G14)840i (Stage 3)499 hpBMW8 Series Convertible (G14)840i (Stage 2)433 hpBMW8 Series Convertible (G14)840i (Stage 1)393 hpBMW8 Series Convertible (G14)840i333 hp
Power
499hp372kW+166 hp
433hp323kW+100 hp
393hp293kW+60 hp
333hp248kW
Torque
775Nm572lb-ft+275 Nm
675Nm498lb-ft+175 Nm
610Nm450lb-ft+110 Nm
500Nm369lb-ft
Curb weight
1,915kg4,222lb
1,915kg4,222lb
1,915kg4,222lb
1,915kg4,222lb
Gross weight
2,400kg5,291lb
2,400kg5,291lb
2,400kg5,291lb
2,400kg5,291lb
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
59.4s99% target: 289 km/h / 180 mph-15.2 s
Calculated
68.2s99% target: 287 km/h / 178 mph-6.4 s
Calculated
68.6s99% target: 270 km/h / 168 mph-6.0 s
Calculated
74.6s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.0s-1.2 s
4.4s-0.8 s
4.7s-0.5 s
5.2s
0-200 km/h
12.6s-6.7 s
Calculated
14.2s-5.1 s
Calculated
16.1s-3.2 s
Calculated
19.3s
Calculated
0-60 mph
3.9s-1.1 s
Calculated
4.2s-0.7 s
Calculated
4.5s-0.5 s
Calculated
4.9s
Calculated
Fuel consumption
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
Fuel consumption city
10.2L/100 km23.1mpg US27.7mpg UK
10.2L/100 km23.1mpg US27.7mpg UK
10.2L/100 km23.1mpg US27.7mpg UK
10.2L/100 km23.1mpg US27.7mpg UK
Fuel consumption highway
6.7L/100 km35.1mpg US42.2mpg UK
6.7L/100 km35.1mpg US42.2mpg UK
6.7L/100 km35.1mpg US42.2mpg UK
6.7L/100 km35.1mpg US42.2mpg UK
Quarter mile
12.0s-1.4 s
Calculated
12.4s-0.9 s
Calculated
12.8s-0.6 s
Calculated
13.4s
Calculated
Power-to-weight
261hp/t195kW/t118hp/1000 lb
Calculated
226hp/t169kW/t103hp/1000 lb
Calculated
205hp/t153kW/t93hp/1000 lb
Calculated
174hp/t130kW/t79hp/1000 lb
Calculated
Torque-to-weight
405Nm/t271lb-ft/ton
Calculated
352Nm/t236lb-ft/ton
Calculated
319Nm/t213lb-ft/ton
Calculated
261Nm/t175lb-ft/ton
Calculated
Estimated range
850km528mi
Calculated
850km528mi
Calculated
850km528mi
Calculated
850km528mi
Calculated
Displacement
2,998cc183cu in
2,998cc183cu in
2,998cc183cu in
2,998cc183cu 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
1,627mm64in
1,627mm64in
1,627mm64in
1,627mm64in
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
68L
68L
68L
68L

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) 840i (Stage 3) 499 hpBMW 8 Series Convertible (G14) 840i (Stage 2) 433 hpBMW 8 Series Convertible (G14) 840i (Stage 1) 393 hpBMW 8 Series Convertible (G14) 840i 333 hpPowerTorque
  • BMW 8 Series Convertible (G14) 840i (Stage 3) 499 hp: Power / Torque
  • BMW 8 Series Convertible (G14) 840i (Stage 2) 433 hp: Power / Torque
  • BMW 8 Series Convertible (G14) 840i (Stage 1) 393 hp: Power / Torque
  • BMW 8 Series Convertible (G14) 840i 333 hp: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW8 Series Convertible (G14)840i (Stage 3)499 hp5,500-6,250 rpm1,700-4,000 rpm6,500 rpm
BMW8 Series Convertible (G14)840i (Stage 2)433 hp5,500-6,250 rpm1,700-4,000 rpm6,500 rpm
BMW8 Series Convertible (G14)840i (Stage 1)393 hp5,500-6,250 rpm1,700-4,000 rpm6,500 rpm
BMW8 Series Convertible (G14)840i333 hp5,500-6,250 rpm1,700-4,000 rpm6,500 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW8 Series Convertible (G14)840i (Stage 3)499 hpBMW8 Series Convertible (G14)840i (Stage 2)433 hpBMW8 Series Convertible (G14)840i (Stage 1)393 hpBMW8 Series Convertible (G14)840i333 hp
Acceleration checkpoints
0-60 mph
0-97 km/h
3.9 s
4.2 s
4.5 s
4.9 s
0-100 km/h
0-62 mph
4.0 s
4.4 s
4.7 s
5.2 s
0-200 km/h
0-124 mph
12.6 s
14.2 s
16.1 s
19.3 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
2.0 s
2.1 s
2.1 s
2.2 s
330 ft
101 m
5.3 s
5.4 s
5.6 s
5.8 s
1/8 mile
201 m
7.9 s
8.2 s
8.4 s
8.7 s
1000 ft
305 m
10.1 s
10.5 s
10.8 s
11.2 s
1/4 mile
402 m
12.0 s
12.4 s
12.8 s
13.4 s
Trap speed
1/4 mile
402 m
195 km/h
121 mph
188 km/h
117 mph
181 km/h
112 mph
172 km/h
107 mph

Power comparison

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

BMW 8 Series Convertible (G14) 840i (Stage 3) 499 hp has 166 hp more than BMW 8 Series Convertible (G14) 840i 333 hp.

The biggest power difference is between BMW 8 Series Convertible (G14) 840i 333 hp and BMW 8 Series Convertible (G14) 840i (Stage 3) 499 hp: 166 hp (124 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)840i (Stage 3)499 hp
292 km/h
181 mph
BMW8 Series Convertible (G14)840i (Stage 2)433 hp
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
BMW8 Series Convertible (G14)840i (Stage 1)393 hp
273 km/h
170 mph
BMW8 Series Convertible (G14)840i333 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) 840i (Stage 3) 499 hp and BMW 8 Series Convertible (G14) 840i 333 hp: 1.2 s.

The closest cars by acceleration are BMW 8 Series Convertible (G14) 840i (Stage 2) 433 hp and BMW 8 Series Convertible (G14) 840i (Stage 1) 393 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)840i (Stage 3)499 hp
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
BMW8 Series Convertible (G14)840i (Stage 2)433 hp
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
BMW8 Series Convertible (G14)840i (Stage 1)393 hp
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
BMW8 Series Convertible (G14)840i333 hp
8.0 L/100 km
29.4 mpg US
35.3 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)840i (Stage 3)499 hp
261 hp/t
195 kW/t
3.8 kg/hp
BMW8 Series Convertible (G14)840i (Stage 2)433 hp
226 hp/t
169 kW/t
4.4 kg/hp
BMW8 Series Convertible (G14)840i (Stage 1)393 hp
205 hp/t
153 kW/t
4.9 kg/hp
BMW8 Series Convertible (G14)840i333 hp
174 hp/t
130 kW/t
5.8 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)840i (Stage 3)499 hp
499 hp
372 kW
4.0 s
292 km/h
181 mph
BMW8 Series Convertible (G14)840i (Stage 2)433 hp
433 hp
323 kW
4.4 s
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
BMW8 Series Convertible (G14)840i (Stage 1)393 hp
393 hp
293 kW
4.7 s
273 km/h
170 mph
BMW8 Series Convertible (G14)840i333 hp
333 hp
248 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)840i (Stage 3)499 hp
Power
499 hp
372 kW
0-100 km/h4.0 s
Top speed
292 km/h
181 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)840i (Stage 2)433 hp
Power
433 hp
323 kW
0-100 km/h4.4 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
4,843 mm
190.7 in
Height
1,339 mm
52.7 in
BMW8 Series Convertible (G14)840i (Stage 1)393 hp
Power
393 hp
293 kW
0-100 km/h4.7 s
Top speed
273 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)840i333 hp
Power
333 hp
248 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)840i (Stage 3)499 hp
Power
499 hp
372 kW
0-100 km/h4.0 s
Top speed
292 km/h
181 mph
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
BMW8 Series Convertible (G14)840i (Stage 2)433 hp
Power
433 hp
323 kW
0-100 km/h4.4 s
Top speed
Unrestricted
290 km/h180 mph
Restricted
280 km/h174 mph
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
BMW8 Series Convertible (G14)840i (Stage 1)393 hp
Power
393 hp
293 kW
0-100 km/h4.7 s
Top speed
273 km/h
170 mph
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
BMW8 Series Convertible (G14)840i333 hp
Power
333 hp
248 kW
0-100 km/h5.2 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
8.0 L/100 km
29.4 mpg US
35.3 mpg UK

BMW 8 Series Convertible (G14) 840i (Stage 3) 499 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)840i (Stage 3)499 hp
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
4.0 s
BMW8 Series Convertible (G14)840i (Stage 2)433 hp
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
4.4 s
BMW8 Series Convertible (G14)840i (Stage 1)393 hp
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
4.7 s
BMW8 Series Convertible (G14)840i333 hp
8.0 L/100 km
29.4 mpg US
35.3 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)840i (Stage 3)499 hp
261 hp/t
195 kW/t
3.8 kg/hp
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
BMW8 Series Convertible (G14)840i (Stage 2)433 hp
226 hp/t
169 kW/t
4.4 kg/hp
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
BMW8 Series Convertible (G14)840i (Stage 1)393 hp
205 hp/t
153 kW/t
4.9 kg/hp
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
BMW8 Series Convertible (G14)840i333 hp
174 hp/t
130 kW/t
5.8 kg/hp
8.0 L/100 km
29.4 mpg US
35.3 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW8 Series Convertible (G14)840i (Stage 3)499 hpBMW8 Series Convertible (G14)840i (Stage 2)433 hpBMW8 Series Convertible (G14)840i (Stage 1)393 hpBMW8 Series Convertible (G14)840i333 hp
Power
499 hp
372 kW
433 hp
323 kW
393 hp
293 kW
333 hp
248 kW
Torque
775 Nm
572 lb-ft
675 Nm
498 lb-ft
610 Nm
450 lb-ft
500 Nm
369 lb-ft
Acceleration
4.0 s
4.4 s
4.7 s
5.2 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
1,915 kg
4,222 lb
1,915 kg
4,222 lb
1,915 kg
4,222 lb
1,915 kg
4,222 lb
Fuel consumption
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
8.0 L/100 km
29.4 mpg US
35.3 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
850 km
528 mi
850 km
528 mi
850 km
528 mi
850 km
528 mi
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
261 hp/t
195 kW/t
3.8 kg/hp
226 hp/t
169 kW/t
4.4 kg/hp
205 hp/t
153 kW/t
4.9 kg/hp
174 hp/t
130 kW/t
5.8 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) 840i (Stage 3) 499 hpBMW 8 Series Convertible (G14) 840i (Stage 2) 433 hpBMW 8 Series Convertible (G14) 840i (Stage 1) 393 hpBMW 8 Series Convertible (G14) 840i 333 hp
Consumption8 L/100 km29.4 mpg US35.3 mpg UK8 L/100 km29.4 mpg US35.3 mpg UK8 L/100 km29.4 mpg US35.3 mpg UK8 L/100 km29.4 mpg US35.3 mpg UK
Cost / 100 km14.00 LC100 km14.00 LC100 km14.00 LC100 km14.00 LC100 km
Cost / 100 mi22.53 LC100 mi22.53 LC100 mi22.53 LC100 mi22.53 LC100 mi
Annual fuel used1,200 L317 US gal264 UK gal1,200 L317 US gal264 UK gal1,200 L317 US gal264 UK gal1,200 L317 US gal264 UK gal
Annual fuel cost2,100 LC/year2,100 LC/year2,100 LC/year2,100 LC/year

Head-to-head comparisons

BMW 8 Series Convertible (G14) 840i (Stage 3) 499 hp

  • Has 67 hp more
  • Has 100 Nm more
  • Is 0.4 s quicker from 0-100 km/h
  • Has 2 km/h (1 mph) higher top speed
  • Has 35 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

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BMW 8 Series Convertible (G14) 840i
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Popular comparisons

BMW 8 Series Convertible (G14) 840i · Stage 3 vs BMW 8 Series Convertible (G14) 840i · Stage 2 vs BMW 8 Series Convertible (G14) 840i · Stage 1 vs BMW 8 Series Convertible (G14) 840i - car comparison - FastVsFaster