Car comparison

Mercedes-Benz GLS (X167) GLS 600 V8vsRolls-Royce Cullinan 6.7 V12

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

New comparison

Mercedes-Benz GLS (X167)

GLS 600 V8

558 hp3982 ccGasolineAWDAutomaticTwin-turboSUV2020-2023

Rolls-Royce Cullinan

6.7 V12

571 hp6749 ccGasolineAWDAutomaticTwin-turboSUV2018-present

Comparison overview

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

Mercedes-Benz GLS (X167) GLS 600 V8

Quickest 0-100 km/h
4.9 s
Fastest top speed
260 km/h
162 mph Unrestricted
250 km/h
155 mph Restricted
Lowest combined fuel consumption
12.0 L/100 km
19.6 mpg US
23.5 mpg UK
Lowest CO2 emissions
273 g/km
Best overall score
80/100
Best performance score
79/100
Best economy score
75/100

Rolls-Royce Cullinan 6.7 V12

Most powerful
571 hp
426 kW
Highest torque
850 Nm
627 lb-ft
Lightest
2,660 kg
5,864 lb
Best power-to-weight
215 hp/t
160 kW/t
4.7 kg/hp
Largest trunk
526 L
Best practicality score
84/100

Specification comparison

Specification comparison
Model	Mercedes-BenzGLS (X167)GLS 600 V8	Rolls-RoyceCullinan6.7 V12
Power	558hp416kW	571hp426kW
Torque	730Nm538lb-ft	850Nm627lb-ft
Curb weight	2,785kg6,140lb	2,660kg5,864lb
Gross weight	3,250kg7,165lb	-
Top speed	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Calculated	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Calculated
To 99% top speed	73.1s99% target: 257 km/h / 160 mph Calculated	72.7s99% target: 257 km/h / 160 mph Calculated
0-100 km/h	4.9s	5.2s
0-200 km/h	18.5s Calculated	19.0s Calculated
0-60 mph	4.6s Calculated	4.9s Calculated
Fuel consumption	12L/100 km19.6mpg US23.5mpg UK	15L/100 km15.7mpg US18.8mpg UK
Fuel consumption city	-	22.4L/100 km10.5mpg US12.6mpg UK
Fuel consumption highway	-	11L/100 km21.4mpg US25.7mpg UK
Quarter mile	13.1s Calculated	13.4s Calculated
Power-to-weight	200hp/t149kW/t91hp/1000 lb Calculated	215hp/t160kW/t97hp/1000 lb Calculated
Torque-to-weight	262Nm/t175lb-ft/ton Calculated	320Nm/t214lb-ft/ton Calculated
Estimated range	750km466mi Calculated	-
Displacement	3,982cc243cu in	6,749cc412cu in
Length	5,205mm205in	5,341mm210in
Width	2,030mm80in	2,000mm79in
Height	1,838mm72in	1,835mm72in
Wheelbase	3,135mm123in	3,295mm130in
Front track	1,699mm67in	-
Rear track	1,723mm68in	-
Trunk volume	520L	526L
Doors	5	4
Seats	4	5
Fuel tank	90L	-
CO2 emissions	273g/km	341g/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.

Mercedes-Benz GLS (X167) GLS 600 V8Rolls-Royce Cullinan 6.7 V12PowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
Mercedes-BenzGLS (X167)GLS 600 V8	6,000-6,500 rpm	2,500-5,000 rpm	6,750 rpm
Rolls-RoyceCullinan6.7 V12	5,000 rpm	1,600 rpm	5,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	Mercedes-BenzGLS (X167)GLS 600 V8	Rolls-RoyceCullinan6.7 V12
	Acceleration checkpoints
0-60 mph 0-97 km/h	4.6 s	4.9 s
0-100 km/h 0-62 mph	4.9 s	5.2 s
0-200 km/h 0-124 mph	18.5 s	19.0 s
Top speed	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Limited	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Likely limited
	Drag race simulation
60 ft 18 m	2.1 s	2.2 s
330 ft 101 m	5.6 s	5.8 s
1/8 mile 201 m	8.5 s	8.7 s
1000 ft 305 m	11.0 s	11.2 s
1/4 mile 402 m	13.1 s	13.4 s
Trap speed 1/4 mile 402 m	174 km/h 108 mph	172 km/h 107 mph

Power comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLS (X167)GLS 600 V8	558 hp 416 kW
Rolls-RoyceCullinan6.7 V12	571 hp 426 kW

Rolls-Royce Cullinan 6.7 V12 has 13 hp more than Mercedes-Benz GLS (X167) GLS 600 V8.

The biggest power difference is between Mercedes-Benz GLS (X167) GLS 600 V8 and Rolls-Royce Cullinan 6.7 V12: 13 hp (10 kW).

Torque comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLS (X167)GLS 600 V8	730 Nm 538 lb-ft
Rolls-RoyceCullinan6.7 V12	850 Nm 627 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLS (X167)GLS 600 V8	2,785 kg 6,140 lb
Rolls-RoyceCullinan6.7 V12	2,660 kg 5,864 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
Mercedes-BenzGLS (X167)GLS 600 V8	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
Rolls-RoyceCullinan6.7 V12	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
Mercedes-BenzGLS (X167)GLS 600 V8	4.9 s
Rolls-RoyceCullinan6.7 V12	5.2 s

Although Rolls-Royce Cullinan 6.7 V12 has more power, Mercedes-Benz GLS (X167) GLS 600 V8 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Mercedes-Benz GLS (X167) GLS 600 V8 and Rolls-Royce Cullinan 6.7 V12: 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
Mercedes-BenzGLS (X167)GLS 600 V8	12.0 L/100 km 19.6 mpg US 23.5 mpg UK
Rolls-RoyceCullinan6.7 V12	15.0 L/100 km 15.7 mpg US 18.8 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz GLS (X167) GLS 600 V8 and Rolls-Royce Cullinan 6.7 V12: 3.0 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
Mercedes-BenzGLS (X167)GLS 600 V8	200 hp/t 149 kW/t 5.0 kg/hp
Rolls-RoyceCullinan6.7 V12	215 hp/t 160 kW/t 4.7 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
Mercedes-BenzGLS (X167)GLS 600 V8	558 hp 416 kW	4.9 s	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
Rolls-RoyceCullinan6.7 V12	571 hp 426 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.

Vehicle

Performance score

Practicality score

Mercedes-BenzGLS (X167)GLS 600 V8

Power	558 hp 416 kW
0-100 km/h	4.9 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

Doors/seats	5 doors 4 seats
Trunk	520 L 18.4 cu ft
Length	5,205 mm 204.9 in
Height	1,838 mm 72.4 in

Rolls-RoyceCullinan6.7 V12

Power	571 hp 426 kW
0-100 km/h	5.2 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

Doors/seats	4 doors 5 seats
Trunk	526 L 18.6 cu ft
Length	5,341 mm 210.3 in
Height	1,835 mm 72.2 in

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

Mercedes-BenzGLS (X167)GLS 600 V8

Power	558 hp 416 kW
0-100 km/h	4.9 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

Rolls-RoyceCullinan6.7 V12

Power	571 hp 426 kW
0-100 km/h	5.2 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

15.0 L/100 km

15.7 mpg US

18.8 mpg UK

Mercedes-Benz GLS (X167) GLS 600 V8 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
Mercedes-BenzGLS (X167)GLS 600 V8	12.0 L/100 km 19.6 mpg US 23.5 mpg UK	4.9 s
Rolls-RoyceCullinan6.7 V12	15.0 L/100 km 15.7 mpg US 18.8 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
Vehicle	Power-to-weight, hp/t	Fuel consumption, L/100 km
Mercedes-BenzGLS (X167)GLS 600 V8	200 hp/t 149 kW/t 5.0 kg/hp	12.0 L/100 km 19.6 mpg US 23.5 mpg UK
Rolls-RoyceCullinan6.7 V12	215 hp/t 160 kW/t 4.7 kg/hp	15.0 L/100 km 15.7 mpg US 18.8 mpg UK

Detailed score breakdown

Vehicle

Mercedes-BenzGLS (X167)GLS 600 V8

Rolls-RoyceCullinan6.7 V12

Power

558 hp

416 kW

571 hp

426 kW

Torque

730 Nm

538 lb-ft

850 Nm

627 lb-ft

Acceleration

4.9 s

5.2 s

Top speed

Unrestricted

260 km/h162 mph

Restricted

250 km/h155 mph

Unrestricted

260 km/h162 mph

Restricted

250 km/h155 mph

Lightness

2,785 kg

6,140 lb

2,660 kg

5,864 lb

Fuel consumption

12.0 L/100 km

19.6 mpg US

23.5 mpg UK

15.0 L/100 km

15.7 mpg US

18.8 mpg UK

Practicality

Doors/seats	5 doors 4 seats
Trunk	520 L 18.4 cu ft
Length	5,205 mm 204.9 in
Height	1,838 mm 72.4 in

Doors/seats	4 doors 5 seats
Trunk	526 L 18.6 cu ft
Length	5,341 mm 210.3 in
Height	1,835 mm 72.2 in

Range score

750 km

466 mi

CO2 score

273 g/km

341 g/km

Trunk score

520 L

18.4 cu ft

526 L

18.6 cu ft

Power-to-weight score

200 hp/t

149 kW/t

5.0 kg/hp

215 hp/t

160 kW/t

4.7 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	Mercedes-Benz GLS (X167) GLS 600 V8	Rolls-Royce Cullinan 6.7 V12
Consumption	12 L/100 km19.6 mpg US23.5 mpg UK	15 L/100 km15.7 mpg US18.8 mpg UK
Cost / 100 km	21.00 LC100 km	26.25 LC100 km
Cost / 100 mi	33.80 LC100 mi	42.25 LC100 mi
Annual fuel used	1,800 L476 US gal396 UK gal	2,250 L594 US gal495 UK gal
Annual fuel cost	3,150 LC/year	3,938 LC/year