Car comparison

Mercedes-Benz GLS (X166) GLS 500vsMercedes-Benz M-class (W166) ML 500 V8

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

New comparison

Mercedes-Benz GLS (X166)

GLS 500

456 hp4663 ccGasolineAWDAutomaticTwin-turboSUV2015-2019
VS

Mercedes-Benz M-class (W166)

ML 500 V8

408 hp4663 ccGasolineAWDAutomaticTwin-turboSUV2012-2015

Comparison overview

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

Best choices

Mercedes-Benz GLS (X166) GLS 500

  • Quickest 0-100 km/h
    5.3 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    456 hp
    340 kW
  • Highest torque
    700 Nm
    516 lb-ft
  • Best power-to-weight
    192 hp/t
    143 kW/t
    5.2 kg/hp
  • Lowest combined fuel consumption
    11.3 L/100 km
    20.8 mpg US
    25.0 mpg UK
  • Lowest city consumption
    14.9 L/100 km
    15.8 mpg US
    19.0 mpg UK
  • Lowest highway consumption
    9.2 L/100 km
    25.6 mpg US
    30.7 mpg UK
  • Lowest CO2 emissions
    264 g/km
  • Best estimated range
    885 km
    550 mi
  • Best overall score
    81/100
  • Best performance score
    76/100
  • Best economy score
    77/100
  • Best practicality score
    93/100

Specification comparison

Specification comparison
ModelMercedes-BenzGLS (X166)GLS 500Mercedes-BenzM-class (W166)ML 500 V8
Power
456hp340kW
408hp304kW
Torque
700Nm516lb-ft
600Nm443lb-ft
Curb weight
2,370kg5,225lb
2,235kg4,927lb
Gross weight
3,250kg7,165lb
2,950kg6,504lb
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
75.5s99% target: 257 km/h / 160 mph
Calculated
87.1s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
5.3s
5.6s
0-200 km/h
19.6s
Calculated
21.6s
Calculated
0-60 mph
5.0s
Calculated
5.3s
Calculated
Fuel consumption
11.3L/100 km20.8mpg US25.0mpg UK
11.5L/100 km20.5mpg US24.6mpg UK
Fuel consumption city
14.9L/100 km15.8mpg US19.0mpg UK
15.2L/100 km15.5mpg US18.6mpg UK
Fuel consumption highway
9.2L/100 km25.6mpg US30.7mpg UK
9.5L/100 km24.8mpg US29.7mpg UK
Quarter mile
13.5s
Calculated
13.8s
Calculated
Power-to-weight
192hp/t143kW/t87hp/1000 lb
Calculated
183hp/t136kW/t83hp/1000 lb
Calculated
Torque-to-weight
295Nm/t198lb-ft/ton
Calculated
268Nm/t180lb-ft/ton
Calculated
Estimated range
885km550mi
Calculated
809km503mi
Calculated
Displacement
4,663cc285cu in
4,663cc285cu in
Length
5,130mm202in
4,804mm189in
Width
1,934mm76in
1,926mm76in
Height
1,850mm73in
1,796mm71in
Wheelbase
3,075mm121in
2,915mm115in
Front track
1,655mm65in
1,648mm65in
Rear track
1,675mm66in
1,663mm65in
Trunk volume
680L
690L
Max trunk volume
2,300L
2,010L
Doors
5
5
Seats
5
5
Fuel tank
100L
93L
CO2 emissions
264g/km
269g/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 (X166) GLS 500Mercedes-Benz M-class (W166) ML 500 V8PowerTorque
  • Mercedes-Benz GLS (X166) GLS 500: Power / Torque
  • Mercedes-Benz M-class (W166) ML 500 V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzGLS (X166)GLS 5005,250-5,500 rpm1,800-4,000 rpm5,750 rpm
Mercedes-BenzM-class (W166)ML 500 V85,000-5,750 rpm1,600-4,750 rpm6,000 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzGLS (X166)GLS 500Mercedes-BenzM-class (W166)ML 500 V8
Acceleration checkpoints
0-60 mph
0-97 km/h
5.0 s
5.3 s
0-100 km/h
0-62 mph
5.3 s
5.6 s
0-200 km/h
0-124 mph
19.6 s
21.6 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
2.2 s
2.2 s
330 ft
101 m
5.8 s
5.9 s
1/8 mile
201 m
8.8 s
9.0 s
1000 ft
305 m
11.3 s
11.6 s
1/4 mile
402 m
13.5 s
13.8 s
Trap speed
1/4 mile
402 m
171 km/h
106 mph
166 km/h
103 mph

Power comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X166)GLS 500
456 hp
340 kW
Mercedes-BenzM-class (W166)ML 500 V8
408 hp
304 kW

Mercedes-Benz GLS (X166) GLS 500 has 48 hp more than Mercedes-Benz M-class (W166) ML 500 V8.

The biggest power difference is between Mercedes-Benz M-class (W166) ML 500 V8 and Mercedes-Benz GLS (X166) GLS 500: 48 hp (36 kW).

Torque comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X166)GLS 500
700 Nm
516 lb-ft
Mercedes-BenzM-class (W166)ML 500 V8
600 Nm
443 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X166)GLS 500
2,370 kg
5,225 lb
Mercedes-BenzM-class (W166)ML 500 V8
2,235 kg
4,927 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-BenzGLS (X166)GLS 500
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Mercedes-BenzM-class (W166)ML 500 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
VehicleValue
Mercedes-BenzGLS (X166)GLS 5005.3 s
Mercedes-BenzM-class (W166)ML 500 V85.6 s

The biggest 0-100 km/h difference is between Mercedes-Benz GLS (X166) GLS 500 and Mercedes-Benz M-class (W166) ML 500 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
VehicleValue
Mercedes-BenzGLS (X166)GLS 500
11.3 L/100 km
20.8 mpg US
25.0 mpg UK
Mercedes-BenzM-class (W166)ML 500 V8
11.5 L/100 km
20.5 mpg US
24.6 mpg UK

Power-to-weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X166)GLS 500
192 hp/t
143 kW/t
5.2 kg/hp
Mercedes-BenzM-class (W166)ML 500 V8
183 hp/t
136 kW/t
5.5 kg/hp

Estimated range comparison

Bar comparison chart for Estimated range. Higher is better · km / mi

Chart data table
VehicleValue
Mercedes-BenzGLS (X166)GLS 500
885 km
550 mi
Mercedes-BenzM-class (W166)ML 500 V8
809 km
503 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Mercedes-BenzGLS (X166)GLS 500
456 hp
340 kW
5.3 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Mercedes-BenzM-class (W166)ML 500 V8
408 hp
304 kW
5.6 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-BenzGLS (X166)GLS 500
Power
456 hp
340 kW
0-100 km/h5.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
5 seats
Trunk
680 L
24.0 cu ft
Length
5,130 mm
202.0 in
Height
1,850 mm
72.8 in
Mercedes-BenzM-class (W166)ML 500 V8
Power
408 hp
304 kW
0-100 km/h5.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
5 seats
Trunk
690 L
24.4 cu ft
Length
4,804 mm
189.1 in
Height
1,796 mm
70.7 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
Mercedes-BenzGLS (X166)GLS 500
Power
456 hp
340 kW
0-100 km/h5.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
11.3 L/100 km
20.8 mpg US
25.0 mpg UK
Mercedes-BenzM-class (W166)ML 500 V8
Power
408 hp
304 kW
0-100 km/h5.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
11.5 L/100 km
20.5 mpg US
24.6 mpg UK

Mercedes-Benz GLS (X166) GLS 500 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-BenzGLS (X166)GLS 500
11.3 L/100 km
20.8 mpg US
25.0 mpg UK
5.3 s
Mercedes-BenzM-class (W166)ML 500 V8
11.5 L/100 km
20.5 mpg US
24.6 mpg UK
5.6 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-BenzGLS (X166)GLS 500
192 hp/t
143 kW/t
5.2 kg/hp
11.3 L/100 km
20.8 mpg US
25.0 mpg UK
Mercedes-BenzM-class (W166)ML 500 V8
183 hp/t
136 kW/t
5.5 kg/hp
11.5 L/100 km
20.5 mpg US
24.6 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleMercedes-BenzGLS (X166)GLS 500Mercedes-BenzM-class (W166)ML 500 V8
Power
456 hp
340 kW
408 hp
304 kW
Torque
700 Nm
516 lb-ft
600 Nm
443 lb-ft
Acceleration
5.3 s
5.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
2,370 kg
5,225 lb
2,235 kg
4,927 lb
Fuel consumption
11.3 L/100 km
20.8 mpg US
25.0 mpg UK
11.5 L/100 km
20.5 mpg US
24.6 mpg UK
Practicality
Doors/seats
5 doors
5 seats
Trunk
680 L
24.0 cu ft
Length
5,130 mm
202.0 in
Height
1,850 mm
72.8 in
Doors/seats
5 doors
5 seats
Trunk
690 L
24.4 cu ft
Length
4,804 mm
189.1 in
Height
1,796 mm
70.7 in
Range score
885 km
550 mi
809 km
503 mi
CO2 score
264 g/km
269 g/km
Trunk score
680 L
24.0 cu ft
690 L
24.4 cu ft
Power-to-weight score
192 hp/t
143 kW/t
5.2 kg/hp
183 hp/t
136 kW/t
5.5 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 GLS (X166) GLS 500Mercedes-Benz M-class (W166) ML 500 V8
Consumption11.3 L/100 km20.8 mpg US25 mpg UK11.5 L/100 km20.5 mpg US24.6 mpg UK
Cost / 100 km19.78 LC100 km20.13 LC100 km
Cost / 100 mi31.82 LC100 mi32.39 LC100 mi
Annual fuel used1,695 L448 US gal373 UK gal1,725 L456 US gal379 UK gal
Annual fuel cost2,966 LC/year3,019 LC/year

Head-to-head comparisons

Mercedes-Benz GLS (X166) GLS 500

  • Has 48 hp more
  • Has 100 Nm more
  • Is 0.3 s quicker from 0-100 km/h
  • Uses 0.2 L/100 km less fuel
  • Has 10 hp/t better power-to-weight
  • Has 76 km (47 mi) more estimated range
  • Emits 5 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range

Cons

  • Heaviest
  • Smallest trunk

Mercedes-Benz M-class (W166) ML 500 V8

  • Is 135 kg lighter
  • Has 10 L more trunk volume

Pros

  • Lightest
  • Largest trunk

Cons

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

Choose cars to compare

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Model
Generation
Engine or modification
Mercedes-Benz GLS (X166) GLS 500
Mercedes-Benz M-class (W166) ML 500 V8
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