Car comparison

Mercedes-Benz GLS (X166) GLS 400vsMercedes-Benz M-class (W163) AMG ML 55 V8

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

New comparison

Mercedes-Benz GLS (X166)

GLS 400

333 hp2996 ccGasolineAWDAutomaticTwin-turboSUV2015-2019
VS

Mercedes-Benz M-class (W163)

AMG ML 55 V8

347 hp5439 ccGasolineAWDAutomaticNaturally aspiratedSUV1999-2001

Comparison overview

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

Best choices

Mercedes-Benz GLS (X166) GLS 400

  • Quickest 0-100 km/h
    6.6 s
  • Fastest top speed
    240 km/h
    149 mph
  • Lowest combined fuel consumption
    9.4 L/100 km
    25.0 mpg US
    30.1 mpg UK
  • Lowest city consumption
    11.7 L/100 km
    20.1 mpg US
    24.1 mpg UK
  • Lowest highway consumption
    8.0 L/100 km
    29.4 mpg US
    35.3 mpg UK
  • Best estimated range
    1,064 km
    661 mi
  • Largest trunk
    680 L
  • Best overall score
    71/100
  • Best performance score
    60/100
  • Best economy score
    82/100
  • Best practicality score
    93/100

Specification comparison

Specification comparison
ModelMercedes-BenzGLS (X166)GLS 400Mercedes-BenzM-class (W163)AMG ML 55 V8
Power
333hp248kW
347hp259kW
Torque
480Nm354lb-ft
510Nm376lb-ft
Curb weight
2,360kg5,203lb
2,085kg4,597lb
Gross weight
3,250kg7,165lb
2,750kg6,063lb
Top speed
240 km/h
149 mph
232 km/h
144 mph
To 99% top speed
93.3s99% target: 238 km/h / 148 mph
Calculated
89.2s99% target: 230 km/h / 143 mph
Calculated
0-100 km/h
6.6s
6.9s
0-200 km/h
29.1s
Calculated
31.9s
Calculated
0-60 mph
6.2s
Calculated
6.5s
Calculated
Fuel consumption
9.4L/100 km25mpg US30.1mpg UK
14.5L/100 km16.2mpg US19.5mpg UK
Fuel consumption city
11.7L/100 km20.1mpg US24.1mpg UK
19.7L/100 km11.9mpg US14.3mpg UK
Fuel consumption highway
8L/100 km29.4mpg US35.3mpg UK
11.4L/100 km20.6mpg US24.8mpg UK
Quarter mile
14.7s
Calculated
14.9s
Calculated
Power-to-weight
141hp/t105kW/t64hp/1000 lb
Calculated
166hp/t124kW/t75hp/1000 lb
Calculated
Torque-to-weight
203Nm/t136lb-ft/ton
Calculated
245Nm/t164lb-ft/ton
Calculated
Estimated range
1,064km661mi
Calculated
641km399mi
Calculated
Displacement
2,996cc183cu in
5,439cc332cu in
Length
5,130mm202in
4,635mm182in
Width
1,934mm76in
1,833mm72in
Height
1,850mm73in
1,820mm72in
Wheelbase
3,075mm121in
2,820mm111in
Front track
1,655mm65in
1,555mm61in
Rear track
1,675mm66in
1,555mm61in
Trunk volume
680L
633L
Max trunk volume
2,300L
2,020L
Doors
5
5
Seats
5
5
Fuel tank
100L
93L
CO2 emissions
218g/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 400Mercedes-Benz M-class (W163) AMG ML 55 V8PowerTorque
  • Mercedes-Benz GLS (X166) GLS 400: Power / Torque
  • Mercedes-Benz M-class (W163) AMG ML 55 V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzGLS (X166)GLS 4005,250-6,000 rpm1,600-4,000 rpm6,250 rpm
Mercedes-BenzM-class (W163)AMG ML 55 V85,500 rpm2,800 rpm5,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzGLS (X166)GLS 400Mercedes-BenzM-class (W163)AMG ML 55 V8
Acceleration checkpoints
0-60 mph
0-97 km/h
6.2 s
6.5 s
0-100 km/h
0-62 mph
6.6 s
6.9 s
0-200 km/h
0-124 mph
29.1 s
31.9 s
Top speed
240 km/h
149 mph
232 km/h
144 mph
Drag race simulation
60 ft
18 m
2.3 s
2.4 s
330 ft
101 m
6.3 s
6.4 s
1/8 mile
201 m
9.5 s
9.7 s
1000 ft
305 m
12.3 s
12.6 s
1/4 mile
402 m
14.7 s
14.9 s
Trap speed
1/4 mile
402 m
154 km/h
96 mph
152 km/h
94 mph

Power comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X166)GLS 400
333 hp
248 kW
Mercedes-BenzM-class (W163)AMG ML 55 V8
347 hp
259 kW

Mercedes-Benz M-class (W163) AMG ML 55 V8 has 14 hp more than Mercedes-Benz GLS (X166) GLS 400.

The biggest power difference is between Mercedes-Benz GLS (X166) GLS 400 and Mercedes-Benz M-class (W163) AMG ML 55 V8: 14 hp (10 kW).

Torque comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X166)GLS 400
480 Nm
354 lb-ft
Mercedes-BenzM-class (W163)AMG ML 55 V8
510 Nm
376 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X166)GLS 400
2,360 kg
5,203 lb
Mercedes-BenzM-class (W163)AMG ML 55 V8
2,085 kg
4,597 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 400
240 km/h
149 mph
Mercedes-BenzM-class (W163)AMG ML 55 V8
232 km/h
144 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 4006.6 s
Mercedes-BenzM-class (W163)AMG ML 55 V86.9 s

Although Mercedes-Benz M-class (W163) AMG ML 55 V8 has more power, Mercedes-Benz GLS (X166) GLS 400 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Mercedes-Benz GLS (X166) GLS 400 and Mercedes-Benz M-class (W163) AMG ML 55 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 400
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
Mercedes-BenzM-class (W163)AMG ML 55 V8
14.5 L/100 km
16.2 mpg US
19.5 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz GLS (X166) GLS 400 and Mercedes-Benz M-class (W163) AMG ML 55 V8: 5.1 L/100 km.

Power-to-weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X166)GLS 400
141 hp/t
105 kW/t
7.1 kg/hp
Mercedes-BenzM-class (W163)AMG ML 55 V8
166 hp/t
124 kW/t
6.0 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X166)GLS 400
1,064 km
661 mi
Mercedes-BenzM-class (W163)AMG ML 55 V8
641 km
399 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Mercedes-BenzGLS (X166)GLS 400
333 hp
248 kW
6.6 s
240 km/h
149 mph
Mercedes-BenzM-class (W163)AMG ML 55 V8
347 hp
259 kW
6.9 s
232 km/h
144 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 400
Power
333 hp
248 kW
0-100 km/h6.6 s
Top speed
240 km/h
149 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 (W163)AMG ML 55 V8
Power
347 hp
259 kW
0-100 km/h6.9 s
Top speed
232 km/h
144 mph
Doors/seats
5 doors
5 seats
Trunk
633 L
22.4 cu ft
Length
4,635 mm
182.5 in
Height
1,820 mm
71.7 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 400
Power
333 hp
248 kW
0-100 km/h6.6 s
Top speed
240 km/h
149 mph
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
Mercedes-BenzM-class (W163)AMG ML 55 V8
Power
347 hp
259 kW
0-100 km/h6.9 s
Top speed
232 km/h
144 mph
14.5 L/100 km
16.2 mpg US
19.5 mpg UK

Mercedes-Benz GLS (X166) GLS 400 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 400
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
6.6 s
Mercedes-BenzM-class (W163)AMG ML 55 V8
14.5 L/100 km
16.2 mpg US
19.5 mpg UK
6.9 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 400
141 hp/t
105 kW/t
7.1 kg/hp
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
Mercedes-BenzM-class (W163)AMG ML 55 V8
166 hp/t
124 kW/t
6.0 kg/hp
14.5 L/100 km
16.2 mpg US
19.5 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleMercedes-BenzGLS (X166)GLS 400Mercedes-BenzM-class (W163)AMG ML 55 V8
Power
333 hp
248 kW
347 hp
259 kW
Torque
480 Nm
354 lb-ft
510 Nm
376 lb-ft
Acceleration
6.6 s
6.9 s
Top speed
240 km/h
149 mph
232 km/h
144 mph
Lightness
2,360 kg
5,203 lb
2,085 kg
4,597 lb
Fuel consumption
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
14.5 L/100 km
16.2 mpg US
19.5 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
633 L
22.4 cu ft
Length
4,635 mm
182.5 in
Height
1,820 mm
71.7 in
Range score
1,064 km
661 mi
641 km
399 mi
CO2 score
218 g/km
-
Trunk score
680 L
24.0 cu ft
633 L
22.4 cu ft
Power-to-weight score
141 hp/t
105 kW/t
7.1 kg/hp
166 hp/t
124 kW/t
6.0 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 400Mercedes-Benz M-class (W163) AMG ML 55 V8
Consumption9.4 L/100 km25 mpg US30.1 mpg UK14.5 L/100 km16.2 mpg US19.5 mpg UK
Cost / 100 km16.45 LC100 km25.38 LC100 km
Cost / 100 mi26.47 LC100 mi40.84 LC100 mi
Annual fuel used1,410 L372 US gal310 UK gal2,175 L575 US gal478 UK gal
Annual fuel cost2,468 LC/year3,806 LC/year

Head-to-head comparisons

Mercedes-Benz GLS (X166) GLS 400

  • Is 0.3 s quicker from 0-100 km/h
  • Has 8 km/h (5 mph) higher top speed
  • Uses 5.1 L/100 km less fuel
  • Has 422 km (262 mi) more estimated range
  • Has 47 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Lowest power
  • Heaviest

Mercedes-Benz M-class (W163) AMG ML 55 V8

  • Has 14 hp more
  • Has 30 Nm more
  • Is 275 kg lighter
  • Has 25 hp/t better power-to-weight

Pros

  • Most powerful
  • Highest torque
  • Lightest
  • Best power-to-weight ratio

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

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Model
Generation
Engine or modification
Mercedes-Benz GLS (X166) GLS 400
Mercedes-Benz M-class (W163) AMG ML 55 V8
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