Car comparison

Bentley Bentayga SPEED 6.0 TSI W12vsAlfa Romeo Stelvio (949) 2.9T Bi-Turbo V6

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

New comparison
VS

Alfa Romeo Stelvio (949)

2.9T Bi-Turbo V6

510 hp2891 ccGasolineAWDAutomaticTwin-turboSUV2018-2022

Comparison overview

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

Best choices

Alfa Romeo Stelvio (949) 2.9T Bi-Turbo V6

  • Quickest 0-100 km/h
    3.8 s
  • Lightest
    1,830 kg
    4,034 lb
  • Best power-to-weight
    279 hp/t
    208 kW/t
    3.6 kg/hp
  • Lowest combined fuel consumption
    9.8 L/100 km
    24.0 mpg US
    28.8 mpg UK
  • Lowest CO2 emissions
    227 g/km
  • Best economy score
    81/100

Bentley Bentayga SPEED 6.0 TSI W12

  • Fastest top speed
    306 km/h
    190 mph
  • Most powerful
    635 hp
    474 kW
  • Highest torque
    900 Nm
    664 lb-ft
  • Best overall score
    88/100
  • Best performance score
    87/100
  • Best practicality score
    91/100

Specification comparison

Specification comparison
ModelBentleyBentaygaSPEED 6.0 TSI W12Alfa RomeoStelvio (949)2.9T Bi-Turbo V6
Power
635hp474kW
510hp380kW
Torque
900Nm664lb-ft
600Nm443lb-ft
Curb weight
2,491kg5,492lb
1,830kg4,034lb
Top speed
306 km/h
190 mph
283 km/h
176 mph
To 99% top speed
59.3s99% target: 303 km/h / 188 mph
Calculated
44.9s99% target: 280 km/h / 174 mph
Calculated
0-100 km/h
3.9s
3.8s
0-200 km/h
11.6s
Calculated
11.2s
Calculated
0-60 mph
3.7s
Calculated
3.6s
Calculated
Fuel consumption
13.1L/100 km18mpg US21.6mpg UK
9.8L/100 km24mpg US28.8mpg UK
Fuel consumption city-
12.3L/100 km19.1mpg US23.0mpg UK
Fuel consumption highway-
8.4L/100 km28mpg US33.6mpg UK
Quarter mile
11.7s
Calculated
11.6s
Calculated
Power-to-weight
255hp/t190kW/t116hp/1000 lb
Calculated
279hp/t208kW/t126hp/1000 lb
Calculated
Torque-to-weight
361Nm/t242lb-ft/ton
Calculated
328Nm/t219lb-ft/ton
Calculated
Estimated range-
653km406mi
Calculated
Displacement-
2,891cc176cu in
Length-
4,686mm184in
Width-
1,903mm75in
Height-
1,693mm67in
Wheelbase-
2,818mm111in
Doors
5
5
Seats
5
5
Fuel tank-
64L
CO2 emissions
308g/km
227g/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.

Bentley Bentayga SPEED 6.0 TSI W12Alfa Romeo Stelvio (949) 2.9T Bi-Turbo V6PowerTorque
  • Bentley Bentayga SPEED 6.0 TSI W12: Power / Torque
  • Alfa Romeo Stelvio (949) 2.9T Bi-Turbo V6: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BentleyBentaygaSPEED 6.0 TSI W125,000-5,750 rpm1,500-5,000 rpm6,000 rpm
Alfa RomeoStelvio (949)2.9T Bi-Turbo V66,500 rpm2,500 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBentleyBentaygaSPEED 6.0 TSI W12Alfa RomeoStelvio (949)2.9T Bi-Turbo V6
Acceleration checkpoints
0-60 mph
0-97 km/h
3.7 s
3.6 s
0-100 km/h
0-62 mph
3.9 s
3.8 s
0-200 km/h
0-124 mph
11.6 s
11.2 s
Top speed
306 km/h
190 mph
283 km/h
176 mph
Drag race simulation
60 ft
18 m
2.0 s
2.0 s
330 ft
101 m
5.2 s
5.2 s
1/8 mile
201 m
7.7 s
7.7 s
1000 ft
305 m
9.9 s
9.8 s
1/4 mile
402 m
11.7 s
11.6 s
Trap speed
1/4 mile
402 m
201 km/h
125 mph
203 km/h
126 mph

Power comparison

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

Chart data table
VehicleValue
BentleyBentaygaSPEED 6.0 TSI W12
635 hp
474 kW
Alfa RomeoStelvio (949)2.9T Bi-Turbo V6
510 hp
380 kW

Bentley Bentayga SPEED 6.0 TSI W12 has 125 hp more than Alfa Romeo Stelvio (949) 2.9T Bi-Turbo V6.

The biggest power difference is between Alfa Romeo Stelvio (949) 2.9T Bi-Turbo V6 and Bentley Bentayga SPEED 6.0 TSI W12: 125 hp (93 kW).

Torque comparison

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

Chart data table
VehicleValue
BentleyBentaygaSPEED 6.0 TSI W12
900 Nm
664 lb-ft
Alfa RomeoStelvio (949)2.9T Bi-Turbo V6
600 Nm
443 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BentleyBentaygaSPEED 6.0 TSI W12
2,491 kg
5,492 lb
Alfa RomeoStelvio (949)2.9T Bi-Turbo V6
1,830 kg
4,034 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
BentleyBentaygaSPEED 6.0 TSI W12
306 km/h
190 mph
Alfa RomeoStelvio (949)2.9T Bi-Turbo V6
283 km/h
176 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
BentleyBentaygaSPEED 6.0 TSI W123.9 s
Alfa RomeoStelvio (949)2.9T Bi-Turbo V63.8 s

Although Bentley Bentayga SPEED 6.0 TSI W12 has more power, Alfa Romeo Stelvio (949) 2.9T Bi-Turbo V6 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Alfa Romeo Stelvio (949) 2.9T Bi-Turbo V6 and Bentley Bentayga SPEED 6.0 TSI W12: 0.1 s.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
BentleyBentaygaSPEED 6.0 TSI W12
13.1 L/100 km
18.0 mpg US
21.6 mpg UK
Alfa RomeoStelvio (949)2.9T Bi-Turbo V6
9.8 L/100 km
24.0 mpg US
28.8 mpg UK

The biggest fuel consumption difference is between Alfa Romeo Stelvio (949) 2.9T Bi-Turbo V6 and Bentley Bentayga SPEED 6.0 TSI W12: 3.3 L/100 km.

Power-to-weight comparison

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

Chart data table
VehicleValue
BentleyBentaygaSPEED 6.0 TSI W12
255 hp/t
190 kW/t
3.9 kg/hp
Alfa RomeoStelvio (949)2.9T Bi-Turbo V6
279 hp/t
208 kW/t
3.6 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BentleyBentaygaSPEED 6.0 TSI W12
635 hp
474 kW
3.9 s
306 km/h
190 mph
Alfa RomeoStelvio (949)2.9T Bi-Turbo V6
510 hp
380 kW
3.8 s
283 km/h
176 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
BentleyBentaygaSPEED 6.0 TSI W12
Power
635 hp
474 kW
0-100 km/h3.9 s
Top speed
306 km/h
190 mph
Doors/seats
5 doors
5 seats
Trunk-
Length-
Height-
Alfa RomeoStelvio (949)2.9T Bi-Turbo V6
Power
510 hp
380 kW
0-100 km/h3.8 s
Top speed
283 km/h
176 mph
Doors/seats
5 doors
5 seats
Trunk-
Length
4,686 mm
184.5 in
Height
1,693 mm
66.7 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
BentleyBentaygaSPEED 6.0 TSI W12
Power
635 hp
474 kW
0-100 km/h3.9 s
Top speed
306 km/h
190 mph
13.1 L/100 km
18.0 mpg US
21.6 mpg UK
Alfa RomeoStelvio (949)2.9T Bi-Turbo V6
Power
510 hp
380 kW
0-100 km/h3.8 s
Top speed
283 km/h
176 mph
9.8 L/100 km
24.0 mpg US
28.8 mpg UK

Alfa Romeo Stelvio (949) 2.9T Bi-Turbo V6 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
BentleyBentaygaSPEED 6.0 TSI W12
13.1 L/100 km
18.0 mpg US
21.6 mpg UK
3.9 s
Alfa RomeoStelvio (949)2.9T Bi-Turbo V6
9.8 L/100 km
24.0 mpg US
28.8 mpg UK
3.8 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
BentleyBentaygaSPEED 6.0 TSI W12
255 hp/t
190 kW/t
3.9 kg/hp
13.1 L/100 km
18.0 mpg US
21.6 mpg UK
Alfa RomeoStelvio (949)2.9T Bi-Turbo V6
279 hp/t
208 kW/t
3.6 kg/hp
9.8 L/100 km
24.0 mpg US
28.8 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBentleyBentaygaSPEED 6.0 TSI W12Alfa RomeoStelvio (949)2.9T Bi-Turbo V6
Power
635 hp
474 kW
510 hp
380 kW
Torque
900 Nm
664 lb-ft
600 Nm
443 lb-ft
Acceleration
3.9 s
3.8 s
Top speed
306 km/h
190 mph
283 km/h
176 mph
Lightness
2,491 kg
5,492 lb
1,830 kg
4,034 lb
Fuel consumption
13.1 L/100 km
18.0 mpg US
21.6 mpg UK
9.8 L/100 km
24.0 mpg US
28.8 mpg UK
Practicality
Doors/seats
5 doors
5 seats
Trunk-
Length-
Height-
Doors/seats
5 doors
5 seats
Trunk-
Length
4,686 mm
184.5 in
Height
1,693 mm
66.7 in
Range score
-
653 km
406 mi
CO2 score
308 g/km
227 g/km
Power-to-weight score
255 hp/t
190 kW/t
3.9 kg/hp
279 hp/t
208 kW/t
3.6 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
VehicleBentley Bentayga SPEED 6.0 TSI W12Alfa Romeo Stelvio (949) 2.9T Bi-Turbo V6
Consumption13.1 L/100 km18 mpg US21.6 mpg UK9.8 L/100 km24 mpg US28.8 mpg UK
Cost / 100 km22.93 LC100 km17.15 LC100 km
Cost / 100 mi36.89 LC100 mi27.60 LC100 mi
Annual fuel used1,965 L519 US gal432 UK gal1,470 L388 US gal323 UK gal
Annual fuel cost3,439 LC/year2,573 LC/year

Head-to-head comparisons

Bentley Bentayga SPEED 6.0 TSI W12

  • Has 125 hp more
  • Has 300 Nm more
  • Has 23 km/h (14 mph) higher top speed

Pros

  • Highest top speed
  • Most powerful
  • Highest torque

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Heaviest
  • Highest CO2 emissions

Alfa Romeo Stelvio (949) 2.9T Bi-Turbo V6

  • Is 661 kg lighter
  • Is 0.1 s quicker from 0-100 km/h
  • Uses 3.3 L/100 km less fuel
  • Has 24 hp/t better power-to-weight
  • Emits 81 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio

Cons

  • Lowest power
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Bentley Bentayga SPEED 6.0 TSI W12
Alfa Romeo Stelvio (949) 2.9T Bi-Turbo V6
Compare selected cars
2 vehicles selected

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