Car comparison

Mercedes-Benz GLS (X167) · Facelift 2023 GLS 450vsMercedes-Benz GLS (X166) GLS 400

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

New comparison

Mercedes-Benz GLS (X167) · Facelift 2023

GLS 450

381 hp2999 ccGasolineAWDAutomaticTurbochargedSUV2023-2026
VS

Mercedes-Benz GLS (X166)

GLS 400

333 hp2996 ccGasolineAWDAutomaticTwin-turboSUV2015-2019

Comparison overview

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

Best choices

Mercedes-Benz GLS (X167) Facelift 2023 GLS 450

  • Quickest 0-100 km/h
    6.1 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    381 hp
    284 kW
  • Highest torque
    500 Nm
    369 lb-ft
  • Best power-to-weight
    156 hp/t
    116 kW/t
    6.4 kg/hp
  • Best overall score
    71/100
  • Best performance score
    66/100

Mercedes-Benz GLS (X166) GLS 400

  • Lightest
    2,360 kg
    5,203 lb
  • Lowest combined fuel consumption
    9.4 L/100 km
    25.0 mpg US
    30.1 mpg UK
  • Best estimated range
    1,064 km
    661 mi
  • Largest trunk
    680 L
  • Best economy score
    82/100
  • Best practicality score
    93/100

Specification comparison

Specification comparison
ModelMercedes-BenzGLS (X167)Facelift 2023GLS 450Mercedes-BenzGLS (X166)GLS 400
Power
381hp284kW
333hp248kW
Torque
500Nm369lb-ft
480Nm354lb-ft
Curb weight
2,450kg5,401lb
2,360kg5,203lb
Gross weight
3,220kg7,099lb
3,250kg7,165lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
240 km/h
149 mph
To 99% top speed
99.4s99% target: 257 km/h / 160 mph
Calculated
93.3s99% target: 238 km/h / 148 mph
Calculated
0-100 km/h
6.1s
6.6s
0-200 km/h
24.0s
Calculated
29.1s
Calculated
0-60 mph
5.8s
Calculated
6.2s
Calculated
Fuel consumption
11.7L/100 km20.1mpg US24.1mpg UK
9.4L/100 km25mpg US30.1mpg UK
Fuel consumption city-
11.7L/100 km20.1mpg US24.1mpg UK
Fuel consumption highway-
8L/100 km29.4mpg US35.3mpg UK
Quarter mile
14.2s
Calculated
14.7s
Calculated
Power-to-weight
156hp/t116kW/t71hp/1000 lb
Calculated
141hp/t105kW/t64hp/1000 lb
Calculated
Torque-to-weight
204Nm/t137lb-ft/ton
Calculated
203Nm/t136lb-ft/ton
Calculated
Estimated range
769km478mi
Calculated
1,064km661mi
Calculated
Displacement
2,999cc183cu in
2,996cc183cu in
Length
5,209mm205in
5,130mm202in
Width
1,956mm77in
1,934mm76in
Height
1,928mm76in
1,850mm73in
Wheelbase
3,135mm123in
3,075mm121in
Front track
1,669mm66in
1,655mm65in
Rear track
1,692mm67in
1,675mm66in
Ground clearance
290mm11in
-
Trunk volume
355L
680L
Max trunk volume
2,400L
2,300L
Doors
5
5
Seats
7
5
Fuel tank
90L
100L
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 (X167) Facelift 2023 GLS 450Mercedes-Benz GLS (X166) GLS 400PowerTorque
  • Mercedes-Benz GLS (X167) Facelift 2023 GLS 450: Power / Torque
  • Mercedes-Benz GLS (X166) GLS 400: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzGLS (X167)Facelift 2023GLS 4505,800-6,100 rpm1,800-5,000 rpm6,350 rpm
Mercedes-BenzGLS (X166)GLS 4005,250-6,000 rpm1,600-4,000 rpm6,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzGLS (X167)Facelift 2023GLS 450Mercedes-BenzGLS (X166)GLS 400
Acceleration checkpoints
0-60 mph
0-97 km/h
5.8 s
6.2 s
0-100 km/h
0-62 mph
6.1 s
6.6 s
0-200 km/h
0-124 mph
24.0 s
29.1 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
240 km/h
149 mph
Drag race simulation
60 ft
18 m
2.3 s
2.3 s
330 ft
101 m
6.1 s
6.3 s
1/8 mile
201 m
9.2 s
9.5 s
1000 ft
305 m
12.0 s
12.3 s
1/4 mile
402 m
14.2 s
14.7 s
Trap speed
1/4 mile
402 m
161 km/h
100 mph
154 km/h
96 mph

Power comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X167)Facelift 2023GLS 450
381 hp
284 kW
Mercedes-BenzGLS (X166)GLS 400
333 hp
248 kW

Mercedes-Benz GLS (X167) Facelift 2023 GLS 450 has 48 hp more than Mercedes-Benz GLS (X166) GLS 400.

The biggest power difference is between Mercedes-Benz GLS (X166) GLS 400 and Mercedes-Benz GLS (X167) Facelift 2023 GLS 450: 48 hp (36 kW).

Torque comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X167)Facelift 2023GLS 450
500 Nm
369 lb-ft
Mercedes-BenzGLS (X166)GLS 400
480 Nm
354 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X167)Facelift 2023GLS 450
2,450 kg
5,401 lb
Mercedes-BenzGLS (X166)GLS 400
2,360 kg
5,203 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 (X167)Facelift 2023GLS 450
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Mercedes-BenzGLS (X166)GLS 400
240 km/h
149 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
Mercedes-BenzGLS (X167)Facelift 2023GLS 4506.1 s
Mercedes-BenzGLS (X166)GLS 4006.6 s

The biggest 0-100 km/h difference is between Mercedes-Benz GLS (X167) Facelift 2023 GLS 450 and Mercedes-Benz GLS (X166) GLS 400: 0.5 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 (X167)Facelift 2023GLS 450
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
Mercedes-BenzGLS (X166)GLS 400
9.4 L/100 km
25.0 mpg US
30.1 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz GLS (X166) GLS 400 and Mercedes-Benz GLS (X167) Facelift 2023 GLS 450: 2.3 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 (X167)Facelift 2023GLS 450
156 hp/t
116 kW/t
6.4 kg/hp
Mercedes-BenzGLS (X166)GLS 400
141 hp/t
105 kW/t
7.1 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X167)Facelift 2023GLS 450
769 km
478 mi
Mercedes-BenzGLS (X166)GLS 400
1,064 km
661 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Mercedes-BenzGLS (X167)Facelift 2023GLS 450
381 hp
284 kW
6.1 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Mercedes-BenzGLS (X166)GLS 400
333 hp
248 kW
6.6 s
240 km/h
149 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 (X167)Facelift 2023GLS 450
Power
381 hp
284 kW
0-100 km/h6.1 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
5,209 mm
205.1 in
Height
1,928 mm
75.9 in
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

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 (X167)Facelift 2023GLS 450
Power
381 hp
284 kW
0-100 km/h6.1 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
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-Benz GLS (X167) Facelift 2023 GLS 450 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 (X167)Facelift 2023GLS 450
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
6.1 s
Mercedes-BenzGLS (X166)GLS 400
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
6.6 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 (X167)Facelift 2023GLS 450
156 hp/t
116 kW/t
6.4 kg/hp
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
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

Detailed score breakdown

Detailed score breakdown
VehicleMercedes-BenzGLS (X167)Facelift 2023GLS 450Mercedes-BenzGLS (X166)GLS 400
Power
381 hp
284 kW
333 hp
248 kW
Torque
500 Nm
369 lb-ft
480 Nm
354 lb-ft
Acceleration
6.1 s
6.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
240 km/h
149 mph
Lightness
2,450 kg
5,401 lb
2,360 kg
5,203 lb
Fuel consumption
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
Practicality
Doors/seats
5 doors
7 seats
Trunk
355 L
12.5 cu ft
Length
5,209 mm
205.1 in
Height
1,928 mm
75.9 in
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
Range score
769 km
478 mi
1,064 km
661 mi
CO2 score
-
218 g/km
Trunk score
355 L
12.5 cu ft
680 L
24.0 cu ft
Power-to-weight score
156 hp/t
116 kW/t
6.4 kg/hp
141 hp/t
105 kW/t
7.1 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 (X167) Facelift 2023 GLS 450Mercedes-Benz GLS (X166) GLS 400
Consumption11.7 L/100 km20.1 mpg US24.1 mpg UK9.4 L/100 km25 mpg US30.1 mpg UK
Cost / 100 km20.47 LC100 km16.45 LC100 km
Cost / 100 mi32.95 LC100 mi26.47 LC100 mi
Annual fuel used1,755 L464 US gal386 UK gal1,410 L372 US gal310 UK gal
Annual fuel cost3,071 LC/year2,468 LC/year

Head-to-head comparisons

Mercedes-Benz GLS (X167) Facelift 2023 GLS 450

  • Has 48 hp more
  • Has 20 Nm more
  • Is 0.5 s quicker from 0-100 km/h
  • Has 20 km/h (12 mph) higher top speed
  • Has 14 hp/t better power-to-weight

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Best power-to-weight ratio

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Smallest trunk

Mercedes-Benz GLS (X166) GLS 400

  • Is 90 kg lighter
  • Uses 2.3 L/100 km less fuel
  • Has 295 km (183 mi) more estimated range
  • Has 325 L more trunk volume

Pros

  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Lowest top speed

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Model
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Mercedes-Benz GLS (X167) GLS 450
Mercedes-Benz GLS (X166) GLS 400
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Mercedes-Benz GLS (X167) · Facelift 2023 GLS 450 vs Mercedes-Benz GLS (X166) GLS 400 - car comparison - FastVsFaster