Car comparison

Mercedes-Benz GLS (X167) · Facelift 2026 GLS 450vsMercedes-Benz GLS (X167) GLS 400d

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

New comparison

Mercedes-Benz GLS (X167) · Facelift 2026

GLS 450

381 hp2999 ccGasolineAWDAutomaticTurbochargedSUV2026-present
VS

Mercedes-Benz GLS (X167)

GLS 400d

330 hp2925 ccDieselAWDAutomaticTwin-turboSUV2019-2023

Comparison overview

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

Best choices

Mercedes-Benz GLS (X167) Facelift 2026 GLS 450

  • Quickest 0-100 km/h
    5.6 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    381 hp
    284 kW
  • Best power-to-weight
    152 hp/t
    113 kW/t
    6.6 kg/hp
  • Largest trunk
    355 L
  • Best overall score
    72/100
  • Best performance score
    68/100
  • Best practicality score
    81/100

Mercedes-Benz GLS (X167) GLS 400d

  • Highest torque
    700 Nm
    516 lb-ft
  • Lightest
    2,430 kg
    5,357 lb
  • Lowest combined fuel consumption
    8.1 L/100 km
    29.0 mpg US
    34.9 mpg UK
  • Best estimated range
    1,111 km
    690 mi
  • Best economy score
    85/100

Specification comparison

Specification comparison
ModelMercedes-BenzGLS (X167)Facelift 2026GLS 450Mercedes-BenzGLS (X167)GLS 400d
Power
381hp284kW
330hp246kW
Torque
560Nm413lb-ft
700Nm516lb-ft
Curb weight
2,505kg5,523lb
2,430kg5,357lb
Gross weight
3,390kg7,474lb
3,250kg7,165lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
238 km/h
148 mph
To 99% top speed
88.6s99% target: 257 km/h / 160 mph
Calculated
89.8s99% target: 236 km/h / 146 mph
Calculated
0-100 km/h
5.6s
6.3s
0-200 km/h
21.8s
Calculated
28.6s
Calculated
0-60 mph
5.3s
Calculated
6.0s
Calculated
Fuel consumption
10.9L/100 km21.6mpg US25.9mpg UK
8.1L/100 km29mpg US34.9mpg UK
Fuel consumption city-
10L/100 km23.5mpg US28.2mpg UK
Fuel consumption highway-
7L/100 km33.6mpg US40.4mpg UK
Quarter mile
13.8s
Calculated
14.5s
Calculated
Power-to-weight
152hp/t113kW/t69hp/1000 lb
Calculated
136hp/t101kW/t62hp/1000 lb
Calculated
Torque-to-weight
224Nm/t150lb-ft/ton
Calculated
288Nm/t193lb-ft/ton
Calculated
Estimated range
826km513mi
Calculated
1,111km690mi
Calculated
Displacement
2,999cc183cu in
2,925cc178cu in
Length
5,217mm205in
5,207mm205in
Width
1,956mm77in
1,956mm77in
Height
1,823mm72in
1,838mm72in
Wheelbase
3,135mm123in
3,135mm123in
Front track-
1,669mm66in
Rear track-
1,692mm67in
Ground clearance
215mm8in
215mm8in
Trunk volume
355L
355L
Max trunk volume
2,400L
2,400L
Doors
5
5
Seats
7
7
Fuel tank
90L
90L

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 2026 GLS 450Mercedes-Benz GLS (X167) GLS 400dPowerTorque
  • Mercedes-Benz GLS (X167) Facelift 2026 GLS 450: Power / Torque
  • Mercedes-Benz GLS (X167) GLS 400d: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzGLS (X167)Facelift 2026GLS 4505,000-6,100 rpm2,000-4,500 rpm6,350 rpm
Mercedes-BenzGLS (X167)GLS 400d3,600-4,200 rpm1,200-3,200 rpm4,450 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzGLS (X167)Facelift 2026GLS 450Mercedes-BenzGLS (X167)GLS 400d
Acceleration checkpoints
0-60 mph
0-97 km/h
5.3 s
6.0 s
0-100 km/h
0-62 mph
5.6 s
6.3 s
0-200 km/h
0-124 mph
21.8 s
28.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
238 km/h
148 mph
Drag race simulation
60 ft
18 m
2.2 s
2.3 s
330 ft
101 m
5.9 s
6.1 s
1/8 mile
201 m
8.9 s
9.3 s
1000 ft
305 m
11.6 s
12.1 s
1/4 mile
402 m
13.8 s
14.5 s
Trap speed
1/4 mile
402 m
165 km/h
103 mph
156 km/h
97 mph

Power comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X167)Facelift 2026GLS 450
381 hp
284 kW
Mercedes-BenzGLS (X167)GLS 400d
330 hp
246 kW

Mercedes-Benz GLS (X167) Facelift 2026 GLS 450 has 51 hp more than Mercedes-Benz GLS (X167) GLS 400d.

The biggest power difference is between Mercedes-Benz GLS (X167) GLS 400d and Mercedes-Benz GLS (X167) Facelift 2026 GLS 450: 51 hp (38 kW).

Torque comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X167)Facelift 2026GLS 450
560 Nm
413 lb-ft
Mercedes-BenzGLS (X167)GLS 400d
700 Nm
516 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X167)Facelift 2026GLS 450
2,505 kg
5,523 lb
Mercedes-BenzGLS (X167)GLS 400d
2,430 kg
5,357 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 2026GLS 450
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Mercedes-BenzGLS (X167)GLS 400d
238 km/h
148 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 2026GLS 4505.6 s
Mercedes-BenzGLS (X167)GLS 400d6.3 s

The biggest 0-100 km/h difference is between Mercedes-Benz GLS (X167) Facelift 2026 GLS 450 and Mercedes-Benz GLS (X167) GLS 400d: 0.7 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 2026GLS 450
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
Mercedes-BenzGLS (X167)GLS 400d
8.1 L/100 km
29.0 mpg US
34.9 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz GLS (X167) GLS 400d and Mercedes-Benz GLS (X167) Facelift 2026 GLS 450: 2.8 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 2026GLS 450
152 hp/t
113 kW/t
6.6 kg/hp
Mercedes-BenzGLS (X167)GLS 400d
136 hp/t
101 kW/t
7.4 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X167)Facelift 2026GLS 450
826 km
513 mi
Mercedes-BenzGLS (X167)GLS 400d
1,111 km
690 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Mercedes-BenzGLS (X167)Facelift 2026GLS 450
381 hp
284 kW
5.6 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Mercedes-BenzGLS (X167)GLS 400d
330 hp
246 kW
6.3 s
238 km/h
148 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 2026GLS 450
Power
381 hp
284 kW
0-100 km/h5.6 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
5,217 mm
205.4 in
Height
1,823 mm
71.8 in
Mercedes-BenzGLS (X167)GLS 400d
Power
330 hp
246 kW
0-100 km/h6.3 s
Top speed
238 km/h
148 mph
Doors/seats
5 doors
7 seats
Trunk
355 L
12.5 cu ft
Length
5,207 mm
205.0 in
Height
1,838 mm
72.4 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 2026GLS 450
Power
381 hp
284 kW
0-100 km/h5.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
Mercedes-BenzGLS (X167)GLS 400d
Power
330 hp
246 kW
0-100 km/h6.3 s
Top speed
238 km/h
148 mph
8.1 L/100 km
29.0 mpg US
34.9 mpg UK

Mercedes-Benz GLS (X167) GLS 400d 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 2026GLS 450
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
5.6 s
Mercedes-BenzGLS (X167)GLS 400d
8.1 L/100 km
29.0 mpg US
34.9 mpg UK
6.3 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 2026GLS 450
152 hp/t
113 kW/t
6.6 kg/hp
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
Mercedes-BenzGLS (X167)GLS 400d
136 hp/t
101 kW/t
7.4 kg/hp
8.1 L/100 km
29.0 mpg US
34.9 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleMercedes-BenzGLS (X167)Facelift 2026GLS 450Mercedes-BenzGLS (X167)GLS 400d
Power
381 hp
284 kW
330 hp
246 kW
Torque
560 Nm
413 lb-ft
700 Nm
516 lb-ft
Acceleration
5.6 s
6.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
238 km/h
148 mph
Lightness
2,505 kg
5,523 lb
2,430 kg
5,357 lb
Fuel consumption
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
8.1 L/100 km
29.0 mpg US
34.9 mpg UK
Practicality
Doors/seats
5 doors
7 seats
Trunk
355 L
12.5 cu ft
Length
5,217 mm
205.4 in
Height
1,823 mm
71.8 in
Doors/seats
5 doors
7 seats
Trunk
355 L
12.5 cu ft
Length
5,207 mm
205.0 in
Height
1,838 mm
72.4 in
Range score
826 km
513 mi
1,111 km
690 mi
Trunk score
355 L
12.5 cu ft
355 L
12.5 cu ft
Power-to-weight score
152 hp/t
113 kW/t
6.6 kg/hp
136 hp/t
101 kW/t
7.4 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 2026 GLS 450Mercedes-Benz GLS (X167) GLS 400d
Consumption10.9 L/100 km21.6 mpg US25.9 mpg UK8.1 L/100 km29 mpg US34.9 mpg UK
Cost / 100 km19.08 LC100 km14.17 LC100 km
Cost / 100 mi30.70 LC100 mi22.81 LC100 mi
Annual fuel used1,635 L432 US gal360 UK gal1,215 L321 US gal267 UK gal
Annual fuel cost2,861 LC/year2,126 LC/year

Head-to-head comparisons

Mercedes-Benz GLS (X167) Facelift 2026 GLS 450

  • Has 51 hp more
  • Is 0.7 s quicker from 0-100 km/h
  • Has 22 km/h (14 mph) higher top speed
  • Has 16 hp/t better power-to-weight

Pros

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

Cons

  • Highest combined fuel consumption
  • Heaviest

Mercedes-Benz GLS (X167) GLS 400d

  • Has 140 Nm more
  • Is 75 kg lighter
  • Uses 2.8 L/100 km less fuel
  • Has 285 km (177 mi) more estimated range

Pros

  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range

Cons

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

Choose cars to compare

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Model
Generation
Engine or modification
Mercedes-Benz GLS (X167) GLS 450
Mercedes-Benz GLS (X167) GLS 400d
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Mercedes-Benz GLS (X167) · Facelift 2026 GLS 450 vs Mercedes-Benz GLS (X167) GLS 400d - car comparison - FastVsFaster