Car comparison

Bentley Bentayga SPEED 6.0 TSI W12vsMercedes-Benz GLS (X167) AMG GLS 63 V8

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

New comparison

Bentley Bentayga

SPEED 6.0 TSI W12

635 hpGasolineAWDAutomaticTwin-turboSUV2019-2020

Mercedes-Benz GLS (X167)

AMG GLS 63 V8

612 hp3982 ccGasolineAWDAutomaticTurbochargedSUV2020-2023

Comparison overview

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

Bentley Bentayga SPEED 6.0 TSI W12

Quickest 0-100 km/h
3.9 s
Fastest top speed
306 km/h
190 mph
Most powerful
635 hp
474 kW
Highest torque
900 Nm
664 lb-ft
Lightest
2,491 kg
5,492 lb
Best power-to-weight
255 hp/t
190 kW/t
3.9 kg/hp
Best overall score
88/100
Best performance score
87/100
Best practicality score
91/100

Mercedes-Benz GLS (X167) AMG GLS 63 V8

Lowest combined fuel consumption
12.0 L/100 km
19.6 mpg US
23.5 mpg UK
Best economy score
75/100

Specification comparison

Specification comparison
Model	BentleyBentaygaSPEED 6.0 TSI W12	Mercedes-BenzGLS (X167)AMG GLS 63 V8
Power	635hp474kW	612hp456kW
Torque	900Nm664lb-ft	850Nm627lb-ft
Curb weight	2,491kg5,492lb	2,555kg5,633lb
Gross weight	-	3,395kg7,485lb
Top speed	306 km/h 190 mph	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Calculated
To 99% top speed	59.3s99% target: 303 km/h / 188 mph Calculated	51.9s99% target: 257 km/h / 160 mph Calculated
0-100 km/h	3.9s	4.2s
0-200 km/h	11.6s Calculated	14.4s Calculated
0-60 mph	3.7s Calculated	4.0s Calculated
Fuel consumption	13.1L/100 km18mpg US21.6mpg UK	12L/100 km19.6mpg US23.5mpg UK
Fuel consumption city	-	15.4L/100 km15.3mpg US18.3mpg UK
Fuel consumption highway	-	10L/100 km23.5mpg US28.2mpg UK
Quarter mile	11.7s Calculated	12.3s Calculated
Power-to-weight	255hp/t190kW/t116hp/1000 lb Calculated	240hp/t179kW/t109hp/1000 lb Calculated
Torque-to-weight	361Nm/t242lb-ft/ton Calculated	333Nm/t223lb-ft/ton Calculated
Estimated range	-	750km466mi Calculated
Displacement	-	3,982cc243cu in
Wheelbase	-	3,135mm123in
Trunk volume	-	355L
Max trunk volume	-	2,400L
Doors	5	5
Seats	5	7
Fuel tank	-	90L
CO2 emissions	308g/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 W12Mercedes-Benz GLS (X167) AMG GLS 63 V8PowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
BentleyBentaygaSPEED 6.0 TSI W12	5,000-5,750 rpm	1,500-5,000 rpm	6,000 rpm
Mercedes-BenzGLS (X167)AMG GLS 63 V8	5,750-6,500 rpm	2,500-4,500 rpm	6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	BentleyBentaygaSPEED 6.0 TSI W12	Mercedes-BenzGLS (X167)AMG GLS 63 V8
	Acceleration checkpoints
0-60 mph 0-97 km/h	3.7 s	4.0 s
0-100 km/h 0-62 mph	3.9 s	4.2 s
0-200 km/h 0-124 mph	11.6 s	14.4 s
Top speed	306 km/h 190 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
330 ft 101 m	5.2 s	5.3 s
1/8 mile 201 m	7.7 s	8.0 s
1000 ft 305 m	9.9 s	10.3 s
1/4 mile 402 m	11.7 s	12.3 s
Trap speed 1/4 mile 402 m	201 km/h 125 mph	187 km/h 116 mph

Power comparison

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

Chart data table
Vehicle	Value
BentleyBentaygaSPEED 6.0 TSI W12	635 hp 474 kW
Mercedes-BenzGLS (X167)AMG GLS 63 V8	612 hp 456 kW

Bentley Bentayga SPEED 6.0 TSI W12 has 23 hp more than Mercedes-Benz GLS (X167) AMG GLS 63 V8.

The biggest power difference is between Mercedes-Benz GLS (X167) AMG GLS 63 V8 and Bentley Bentayga SPEED 6.0 TSI W12: 23 hp (17 kW).

Torque comparison

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

Chart data table
Vehicle	Value
BentleyBentaygaSPEED 6.0 TSI W12	900 Nm 664 lb-ft
Mercedes-BenzGLS (X167)AMG GLS 63 V8	850 Nm 627 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
BentleyBentaygaSPEED 6.0 TSI W12	2,491 kg 5,492 lb
Mercedes-BenzGLS (X167)AMG GLS 63 V8	2,555 kg 5,633 lb

Top speed without limiter comparison

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

Chart data table
Vehicle	Value
BentleyBentaygaSPEED 6.0 TSI W12	306 km/h 190 mph
Mercedes-BenzGLS (X167)AMG GLS 63 V8	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

Chart data table
Vehicle	Value
BentleyBentaygaSPEED 6.0 TSI W12	3.9 s
Mercedes-BenzGLS (X167)AMG GLS 63 V8	4.2 s

The biggest 0-100 km/h difference is between Bentley Bentayga SPEED 6.0 TSI W12 and Mercedes-Benz GLS (X167) AMG GLS 63 V8: 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
Vehicle	Value
BentleyBentaygaSPEED 6.0 TSI W12	13.1 L/100 km 18.0 mpg US 21.6 mpg UK
Mercedes-BenzGLS (X167)AMG GLS 63 V8	12.0 L/100 km 19.6 mpg US 23.5 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz GLS (X167) AMG GLS 63 V8 and Bentley Bentayga SPEED 6.0 TSI W12: 1.1 L/100 km.

Power-to-weight comparison

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

Chart data table
Vehicle	Value
BentleyBentaygaSPEED 6.0 TSI W12	255 hp/t 190 kW/t 3.9 kg/hp
Mercedes-BenzGLS (X167)AMG GLS 63 V8	240 hp/t 179 kW/t 4.2 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
BentleyBentaygaSPEED 6.0 TSI W12	635 hp 474 kW	3.9 s	306 km/h 190 mph
Mercedes-BenzGLS (X167)AMG GLS 63 V8	612 hp 456 kW	4.2 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.

Vehicle

Performance score

Practicality score

BentleyBentaygaSPEED 6.0 TSI W12

Power	635 hp 474 kW
0-100 km/h	3.9 s
Top speed 306 km/h 190 mph

Doors/seats	5 doors 5 seats
Trunk	-
Length	-
Height	-

Mercedes-BenzGLS (X167)AMG GLS 63 V8

Power	612 hp 456 kW
0-100 km/h	4.2 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

Doors/seats	5 doors 7 seats
Trunk	355 L 12.5 cu ft
Length	-
Height	-

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Vehicle

Performance score

Fuel economy score

BentleyBentaygaSPEED 6.0 TSI W12

Power	635 hp 474 kW
0-100 km/h	3.9 s
Top speed 306 km/h 190 mph

13.1 L/100 km

18.0 mpg US

21.6 mpg UK

Mercedes-BenzGLS (X167)AMG GLS 63 V8

Power	612 hp 456 kW
0-100 km/h	4.2 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

12.0 L/100 km

19.6 mpg US

23.5 mpg UK

Bentley Bentayga SPEED 6.0 TSI W12 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
Vehicle	Fuel consumption, L/100 km	0-100 km/h, s
BentleyBentaygaSPEED 6.0 TSI W12	13.1 L/100 km 18.0 mpg US 21.6 mpg UK	3.9 s
Mercedes-BenzGLS (X167)AMG GLS 63 V8	12.0 L/100 km 19.6 mpg US 23.5 mpg UK	4.2 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
Vehicle	Power-to-weight, hp/t	Fuel 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
Mercedes-BenzGLS (X167)AMG GLS 63 V8	240 hp/t 179 kW/t 4.2 kg/hp	12.0 L/100 km 19.6 mpg US 23.5 mpg UK

Detailed score breakdown

Vehicle

BentleyBentaygaSPEED 6.0 TSI W12

Mercedes-BenzGLS (X167)AMG GLS 63 V8

Power

635 hp

474 kW

612 hp

456 kW

Torque

900 Nm

664 lb-ft

850 Nm

627 lb-ft

Acceleration

3.9 s

4.2 s

Top speed

306 km/h

190 mph

Unrestricted

260 km/h162 mph

Restricted

250 km/h155 mph

Lightness

2,491 kg

5,492 lb

2,555 kg

5,633 lb

Fuel consumption

13.1 L/100 km

18.0 mpg US

21.6 mpg UK

12.0 L/100 km

19.6 mpg US

23.5 mpg UK

Practicality

Doors/seats	5 doors 5 seats
Trunk	-
Length	-
Height	-

Doors/seats	5 doors 7 seats
Trunk	355 L 12.5 cu ft
Length	-
Height	-

Range score

750 km

466 mi

CO2 score

308 g/km

Trunk score

355 L

12.5 cu ft

Power-to-weight score

255 hp/t

190 kW/t

3.9 kg/hp

240 hp/t

179 kW/t

4.2 kg/hp

Overall

Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Average annual distanceDistance unitFuel price in your local currencyPrice unit

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
Vehicle	Bentley Bentayga SPEED 6.0 TSI W12	Mercedes-Benz GLS (X167) AMG GLS 63 V8
Consumption	13.1 L/100 km18 mpg US21.6 mpg UK	12 L/100 km19.6 mpg US23.5 mpg UK
Cost / 100 km	22.93 LC100 km	21.00 LC100 km
Cost / 100 mi	36.89 LC100 mi	33.80 LC100 mi
Annual fuel used	1,965 L519 US gal432 UK gal	1,800 L476 US gal396 UK gal
Annual fuel cost	3,439 LC/year	3,150 LC/year