Car comparison

Mercedes-Benz GL (X166) AMG GL 63vsRolls-Royce Cullinan 6.7 V12

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

New comparison

Mercedes-Benz GL (X166)

AMG GL 63

558 hp5461 ccGasolineAWDAutomaticTwin-turboSUV2012-2015
VS

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.

Best choices

Mercedes-Benz GL (X166) AMG GL 63

  • Quickest 0-100 km/h
    4.9 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Lightest
    2,505 kg
    5,523 lb
  • Best power-to-weight
    223 hp/t
    166 kW/t
    4.5 kg/hp
  • Lowest combined fuel consumption
    12.3 L/100 km
    19.1 mpg US
    23.0 mpg UK
  • Lowest city consumption
    15.8 L/100 km
    14.9 mpg US
    17.9 mpg UK
  • Lowest highway consumption
    10.3 L/100 km
    22.8 mpg US
    27.4 mpg UK
  • Lowest CO2 emissions
    288 g/km
  • Largest trunk
    680 L
  • Best overall score
    83/100
  • Best performance score
    78/100
  • Best economy score
    74/100
  • Best practicality score
    93/100

Specification comparison

Specification comparison
ModelMercedes-BenzGL (X166)AMG GL 63Rolls-RoyceCullinan6.7 V12
Power
558hp416kW
571hp426kW
Torque
760Nm561lb-ft
850Nm627lb-ft
Curb weight
2,505kg5,523lb
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
78.6s99% target: 257 km/h / 160 mph
Calculated
72.6s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.9s
5.2s
0-200 km/h
19.2s
Calculated
19.0s
Calculated
0-60 mph
4.6s
Calculated
4.9s
Calculated
Fuel consumption
12.3L/100 km19.1mpg US23.0mpg UK
15L/100 km15.7mpg US18.8mpg UK
Fuel consumption city
15.8L/100 km14.9mpg US17.9mpg UK
22.4L/100 km10.5mpg US12.6mpg UK
Fuel consumption highway
10.3L/100 km22.8mpg US27.4mpg UK
11L/100 km21.4mpg US25.7mpg UK
Quarter mile
13.1s
Calculated
13.4s
Calculated
Power-to-weight
223hp/t166kW/t101hp/1000 lb
Calculated
215hp/t160kW/t97hp/1000 lb
Calculated
Torque-to-weight
303Nm/t203lb-ft/ton
Calculated
320Nm/t214lb-ft/ton
Calculated
Estimated range
813km505mi
Calculated
-
Displacement
5,461cc333cu in
6,749cc412cu in
Length
5,141mm202in
5,341mm210in
Width
1,982mm78in
2,000mm79in
Height
1,850mm73in
1,835mm72in
Wheelbase
3,075mm121in
3,295mm130in
Front track
1,677mm66in
-
Rear track
1,696mm67in
-
Trunk volume
680L
526L
Max trunk volume
2,300L
-
Doors
5
4
Seats
7
5
Fuel tank
100L
-
CO2 emissions
288g/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 GL (X166) AMG GL 63Rolls-Royce Cullinan 6.7 V12PowerTorque
  • Mercedes-Benz GL (X166) AMG GL 63: Power / Torque
  • Rolls-Royce Cullinan 6.7 V12: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzGL (X166)AMG GL 635,250-5,750 rpm2,000-5,000 rpm6,000 rpm
Rolls-RoyceCullinan6.7 V125,000 rpm1,600 rpm5,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzGL (X166)AMG GL 63Rolls-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
19.2 s
19.0 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely 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
172 km/h
107 mph
172 km/h
107 mph

Power comparison

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

Chart data table
VehicleValue
Mercedes-BenzGL (X166)AMG GL 63
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 GL (X166) AMG GL 63.

The biggest power difference is between Mercedes-Benz GL (X166) AMG GL 63 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
VehicleValue
Mercedes-BenzGL (X166)AMG GL 63
760 Nm
561 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
VehicleValue
Mercedes-BenzGL (X166)AMG GL 63
2,505 kg
5,523 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
VehicleValue
Mercedes-BenzGL (X166)AMG GL 63
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
VehicleValue
Mercedes-BenzGL (X166)AMG GL 634.9 s
Rolls-RoyceCullinan6.7 V125.2 s

Although Rolls-Royce Cullinan 6.7 V12 has more power, Mercedes-Benz GL (X166) AMG GL 63 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Mercedes-Benz GL (X166) AMG GL 63 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
VehicleValue
Mercedes-BenzGL (X166)AMG GL 63
12.3 L/100 km
19.1 mpg US
23.0 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 GL (X166) AMG GL 63 and Rolls-Royce Cullinan 6.7 V12: 2.7 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
Mercedes-BenzGL (X166)AMG GL 63
223 hp/t
166 kW/t
4.5 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
VehiclePowerAccelerationTop speed
Mercedes-BenzGL (X166)AMG GL 63
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.

Chart data table
VehiclePerformance scorePracticality score
Mercedes-BenzGL (X166)AMG GL 63
Power
558 hp
416 kW
0-100 km/h4.9 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
7 seats
Trunk
680 L
24.0 cu ft
Length
5,141 mm
202.4 in
Height
1,850 mm
72.8 in
Rolls-RoyceCullinan6.7 V12
Power
571 hp
426 kW
0-100 km/h5.2 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.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
Mercedes-BenzGL (X166)AMG GL 63
Power
558 hp
416 kW
0-100 km/h4.9 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
12.3 L/100 km
19.1 mpg US
23.0 mpg UK
Rolls-RoyceCullinan6.7 V12
Power
571 hp
426 kW
0-100 km/h5.2 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 GL (X166) AMG GL 63 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
Mercedes-BenzGL (X166)AMG GL 63
12.3 L/100 km
19.1 mpg US
23.0 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
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
Mercedes-BenzGL (X166)AMG GL 63
223 hp/t
166 kW/t
4.5 kg/hp
12.3 L/100 km
19.1 mpg US
23.0 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

Detailed score breakdown
VehicleMercedes-BenzGL (X166)AMG GL 63Rolls-RoyceCullinan6.7 V12
Power
558 hp
416 kW
571 hp
426 kW
Torque
760 Nm
561 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
2,505 kg
5,523 lb
2,660 kg
5,864 lb
Fuel consumption
12.3 L/100 km
19.1 mpg US
23.0 mpg UK
15.0 L/100 km
15.7 mpg US
18.8 mpg UK
Practicality
Doors/seats
5 doors
7 seats
Trunk
680 L
24.0 cu ft
Length
5,141 mm
202.4 in
Height
1,850 mm
72.8 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
813 km
505 mi
-
CO2 score
288 g/km
341 g/km
Trunk score
680 L
24.0 cu ft
526 L
18.6 cu ft
Power-to-weight score
223 hp/t
166 kW/t
4.5 kg/hp
215 hp/t
160 kW/t
4.7 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
VehicleMercedes-Benz GL (X166) AMG GL 63Rolls-Royce Cullinan 6.7 V12
Consumption12.3 L/100 km19.1 mpg US23 mpg UK15 L/100 km15.7 mpg US18.8 mpg UK
Cost / 100 km21.53 LC100 km26.25 LC100 km
Cost / 100 mi34.64 LC100 mi42.25 LC100 mi
Annual fuel used1,845 L487 US gal406 UK gal2,250 L594 US gal495 UK gal
Annual fuel cost3,229 LC/year3,938 LC/year

Head-to-head comparisons

Mercedes-Benz GL (X166) AMG GL 63

  • Is 155 kg lighter
  • Is 0.3 s quicker from 0-100 km/h
  • Uses 2.7 L/100 km less fuel
  • Has 8 hp/t better power-to-weight
  • Has 154 L more trunk volume
  • Emits 53 g/km less CO2

Pros

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

Cons

  • Lowest power

Rolls-Royce Cullinan 6.7 V12

  • Has 13 hp more
  • Has 90 Nm more

Pros

  • Most powerful
  • Highest torque

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
Mercedes-Benz GL (X166) AMG GL 63
Rolls-Royce Cullinan 6.7 V12
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