
BMW 8 Series Convertible (G14)
Car comparison
Compare specs, acceleration, fuel consumption, dimensions, practicality, and estimated running costs side by side.
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BMW 8 Series Convertible (G14)

BMW 8 Series Convertible (G14)

BMW 8 Series Convertible (G14)

BMW 8 Series Convertible (G14)
Use the estimates as comparison hints and verify exact figures before making decisions.
| Model | BMW8 Series Convertible (G14)840i (Stage 3)499 hp | BMW8 Series Convertible (G14)840i (Stage 2)433 hp | BMW8 Series Convertible (G14)840i (Stage 1)393 hp | BMW8 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 | Unrestricted 290 km/h180 mph Restricted 280 km/h174 mph Calculated | 273 km/h 170 mph | 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 |
Use the estimates as comparison hints and verify exact figures before making decisions.
Estimated stock-style power and torque curves by engine speed.
| Vehicle | Peak power RPM | Peak torque RPM | Max engine speed |
|---|---|---|---|
| BMW8 Series Convertible (G14)840i (Stage 3)499 hp | 5,500-6,250 rpm | 1,700-4,000 rpm | 6,500 rpm |
| BMW8 Series Convertible (G14)840i (Stage 2)433 hp | 5,500-6,250 rpm | 1,700-4,000 rpm | 6,500 rpm |
| BMW8 Series Convertible (G14)840i (Stage 1)393 hp | 5,500-6,250 rpm | 1,700-4,000 rpm | 6,500 rpm |
| BMW8 Series Convertible (G14)840i333 hp | 5,500-6,250 rpm | 1,700-4,000 rpm | 6,500 rpm |
Estimated speed over time for selected vehicles.
| Metric | BMW8 Series Convertible (G14)840i (Stage 3)499 hp | BMW8 Series Convertible (G14)840i (Stage 2)433 hp | BMW8 Series Convertible (G14)840i (Stage 1)393 hp | BMW8 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 |
Bar comparison chart for Power. Higher is better · hp / kW
| Vehicle | Value |
|---|---|
| BMW8 Series Convertible (G14)840i (Stage 3)499 hp | 499 hp 372 kW |
| BMW8 Series Convertible (G14)840i (Stage 2)433 hp | 433 hp 323 kW |
| BMW8 Series Convertible (G14)840i (Stage 1)393 hp | 393 hp 293 kW |
| BMW8 Series Convertible (G14)840i333 hp | 333 hp 248 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).
Bar comparison chart for Torque. Higher is better · Nm / lb-ft
| Vehicle | Value |
|---|---|
| BMW8 Series Convertible (G14)840i (Stage 3)499 hp | 775 Nm 572 lb-ft |
| BMW8 Series Convertible (G14)840i (Stage 2)433 hp | 675 Nm 498 lb-ft |
| BMW8 Series Convertible (G14)840i (Stage 1)393 hp | 610 Nm 450 lb-ft |
| BMW8 Series Convertible (G14)840i333 hp | 500 Nm 369 lb-ft |
Bar comparison chart for Curb weight. Lower is better · kg / lb
| Vehicle | Value |
|---|---|
| BMW8 Series Convertible (G14)840i (Stage 3)499 hp | 1,915 kg 4,222 lb |
| BMW8 Series Convertible (G14)840i (Stage 2)433 hp | 1,915 kg 4,222 lb |
| BMW8 Series Convertible (G14)840i (Stage 1)393 hp | 1,915 kg 4,222 lb |
| BMW8 Series Convertible (G14)840i333 hp | 1,915 kg 4,222 lb |
Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph
| Vehicle | Value |
|---|---|
| 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 |
Bar comparison chart for 0-100 km/h. Lower is better · seconds
| Vehicle | Value |
|---|---|
| BMW8 Series Convertible (G14)840i (Stage 3)499 hp | 4.0 s |
| BMW8 Series Convertible (G14)840i (Stage 2)433 hp | 4.4 s |
| BMW8 Series Convertible (G14)840i (Stage 1)393 hp | 4.7 s |
| BMW8 Series Convertible (G14)840i333 hp | 5.2 s |
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.
Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK
| Vehicle | Value |
|---|---|
| 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 |
Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t
| Vehicle | Value |
|---|---|
| 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 |
Bar comparison chart for Estimated range. Higher is better · km / mi
| Vehicle | Value |
|---|---|
| BMW8 Series Convertible (G14)840i (Stage 3)499 hp | 850 km 528 mi |
| BMW8 Series Convertible (G14)840i (Stage 2)433 hp | 850 km 528 mi |
| BMW8 Series Convertible (G14)840i (Stage 1)393 hp | 850 km 528 mi |
| BMW8 Series Convertible (G14)840i333 hp | 850 km 528 mi |
Radar chart comparing normalized performance and fuel-consumption scores.
| Vehicle | Power | Acceleration | Top 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 |
Scatter chart with performance score on the X axis and practicality score on the Y axis.
| Vehicle | Performance score | Practicality score | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BMW8 Series Convertible (G14)840i (Stage 3)499 hp |
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| BMW8 Series Convertible (G14)840i (Stage 2)433 hp |
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| BMW8 Series Convertible (G14)840i (Stage 1)393 hp |
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| BMW8 Series Convertible (G14)840i333 hp |
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Cars closer to the top-right corner combine stronger performance with better fuel economy scores.
| Vehicle | Performance score | Fuel economy score | ||||||
|---|---|---|---|---|---|---|---|---|
| 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 | ||||||
BMW 8 Series Convertible (G14) 840i (Stage 3) 499 hp is closest to the top-right balance target for performance and fuel economy.
Cars closer to the lower-left corner offer a better mix of quick acceleration and low fuel consumption.
| Vehicle | Fuel consumption, L/100 km | 0-100 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 |
The shaded area favors higher power-to-weight with lower combined fuel consumption.
| Vehicle | Power-to-weight, hp/t | Fuel 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 |
| Vehicle | BMW8 Series Convertible (G14)840i (Stage 3)499 hp | BMW8 Series Convertible (G14)840i (Stage 2)433 hp | BMW8 Series Convertible (G14)840i (Stage 1)393 hp | BMW8 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 |
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| 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 |
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
| Vehicle | BMW 8 Series Convertible (G14) 840i (Stage 3) 499 hp | BMW 8 Series Convertible (G14) 840i (Stage 2) 433 hp | BMW 8 Series Convertible (G14) 840i (Stage 1) 393 hp | BMW 8 Series Convertible (G14) 840i 333 hp |
|---|---|---|---|---|
| Consumption | 8 L/100 km29.4 mpg US35.3 mpg UK | 8 L/100 km29.4 mpg US35.3 mpg UK | 8 L/100 km29.4 mpg US35.3 mpg UK | 8 L/100 km29.4 mpg US35.3 mpg UK |
| Cost / 100 km | 14.00 LC100 km | 14.00 LC100 km | 14.00 LC100 km | 14.00 LC100 km |
| Cost / 100 mi | 22.53 LC100 mi | 22.53 LC100 mi | 22.53 LC100 mi | 22.53 LC100 mi |
| Annual fuel used | 1,200 L317 US gal264 UK gal | 1,200 L317 US gal264 UK gal | 1,200 L317 US gal264 UK gal | 1,200 L317 US gal264 UK gal |
| Annual fuel cost | 2,100 LC/year | 2,100 LC/year | 2,100 LC/year | 2,100 LC/year |
Pros
No measurable advantages in the available data.























