Car comparison

Mercedes-Benz GLS (X166) GLS 500vsMercedes-Benz GLS (X167) · Facelift 2026 GLS 450d

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 GLS (X167) · Facelift 2026

GLS 450d

367 hp2989 ccDieselAWDAutomaticTwin-turboSUV2026-present

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
  • Lightest
    2,370 kg
    5,225 lb
  • Best power-to-weight
    192 hp/t
    143 kW/t
    5.2 kg/hp
  • Largest trunk
    680 L
  • Best overall score
    81/100
  • Best performance score
    76/100
  • Best practicality score
    93/100

Specification comparison

Specification comparison
ModelMercedes-BenzGLS (X166)GLS 500Mercedes-BenzGLS (X167)Facelift 2026GLS 450d
Power
456hp340kW
367hp274kW
Torque
700Nm516lb-ft
750Nm553lb-ft
Curb weight
2,370kg5,225lb
2,590kg5,710lb
Gross weight
3,250kg7,165lb
3,485kg7,683lb
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
93.2s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
5.3s
5.7s
0-200 km/h
19.6s
Calculated
22.5s
Calculated
0-60 mph
5.0s
Calculated
5.4s
Calculated
Fuel consumption
11.3L/100 km20.8mpg US25.0mpg UK
8.5L/100 km27.7mpg US33.2mpg UK
Fuel consumption city
14.9L/100 km15.8mpg US19.0mpg UK
-
Fuel consumption highway
9.2L/100 km25.6mpg US30.7mpg UK
-
Quarter mile
13.5s
Calculated
13.9s
Calculated
Power-to-weight
192hp/t143kW/t87hp/1000 lb
Calculated
142hp/t106kW/t64hp/1000 lb
Calculated
Torque-to-weight
295Nm/t198lb-ft/ton
Calculated
290Nm/t194lb-ft/ton
Calculated
Estimated range
885km550mi
Calculated
1,059km658mi
Calculated
Displacement
4,663cc285cu in
2,989cc182cu in
Length
5,130mm202in
5,217mm205in
Width
1,934mm76in
1,956mm77in
Height
1,850mm73in
1,823mm72in
Wheelbase
3,075mm121in
3,135mm123in
Front track
1,655mm65in
-
Rear track
1,675mm66in
-
Ground clearance-
215mm8in
Trunk volume
680L
355L
Max trunk volume
2,300L
2,400L
Doors
5
5
Seats
5
7
Fuel tank
100L
90L
CO2 emissions
264g/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 GLS (X167) Facelift 2026 GLS 450dPowerTorque
  • Mercedes-Benz GLS (X166) GLS 500: Power / Torque
  • Mercedes-Benz GLS (X167) Facelift 2026 GLS 450d: 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-BenzGLS (X167)Facelift 2026GLS 450d4,000 rpm1,350-2,800 rpm4,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzGLS (X166)GLS 500Mercedes-BenzGLS (X167)Facelift 2026GLS 450d
Acceleration checkpoints
0-60 mph
0-97 km/h
5.0 s
5.4 s
0-100 km/h
0-62 mph
5.3 s
5.7 s
0-200 km/h
0-124 mph
19.6 s
22.5 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
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
11.7 s
1/4 mile
402 m
13.5 s
13.9 s
Trap speed
1/4 mile
402 m
171 km/h
106 mph
164 km/h
102 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-BenzGLS (X167)Facelift 2026GLS 450d
367 hp
274 kW

Mercedes-Benz GLS (X166) GLS 500 has 89 hp more than Mercedes-Benz GLS (X167) Facelift 2026 GLS 450d.

The biggest power difference is between Mercedes-Benz GLS (X167) Facelift 2026 GLS 450d and Mercedes-Benz GLS (X166) GLS 500: 89 hp (66 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-BenzGLS (X167)Facelift 2026GLS 450d
750 Nm
553 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-BenzGLS (X167)Facelift 2026GLS 450d
2,590 kg
5,710 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-BenzGLS (X167)Facelift 2026GLS 450d
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-BenzGLS (X167)Facelift 2026GLS 450d5.7 s

The biggest 0-100 km/h difference is between Mercedes-Benz GLS (X166) GLS 500 and Mercedes-Benz GLS (X167) Facelift 2026 GLS 450d: 0.4 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-BenzGLS (X167)Facelift 2026GLS 450d
8.5 L/100 km
27.7 mpg US
33.2 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz GLS (X167) Facelift 2026 GLS 450d and Mercedes-Benz GLS (X166) GLS 500: 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 (X166)GLS 500
192 hp/t
143 kW/t
5.2 kg/hp
Mercedes-BenzGLS (X167)Facelift 2026GLS 450d
142 hp/t
106 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 (X166)GLS 500
885 km
550 mi
Mercedes-BenzGLS (X167)Facelift 2026GLS 450d
1,059 km
658 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-BenzGLS (X167)Facelift 2026GLS 450d
367 hp
274 kW
5.7 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-BenzGLS (X167)Facelift 2026GLS 450d
Power
367 hp
274 kW
0-100 km/h5.7 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

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-BenzGLS (X167)Facelift 2026GLS 450d
Power
367 hp
274 kW
0-100 km/h5.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
8.5 L/100 km
27.7 mpg US
33.2 mpg UK

Mercedes-Benz GLS (X167) Facelift 2026 GLS 450d 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-BenzGLS (X167)Facelift 2026GLS 450d
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
5.7 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-BenzGLS (X167)Facelift 2026GLS 450d
142 hp/t
106 kW/t
7.1 kg/hp
8.5 L/100 km
27.7 mpg US
33.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleMercedes-BenzGLS (X166)GLS 500Mercedes-BenzGLS (X167)Facelift 2026GLS 450d
Power
456 hp
340 kW
367 hp
274 kW
Torque
700 Nm
516 lb-ft
750 Nm
553 lb-ft
Acceleration
5.3 s
5.7 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
2,590 kg
5,710 lb
Fuel consumption
11.3 L/100 km
20.8 mpg US
25.0 mpg UK
8.5 L/100 km
27.7 mpg US
33.2 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
7 seats
Trunk
355 L
12.5 cu ft
Length
5,217 mm
205.4 in
Height
1,823 mm
71.8 in
Range score
885 km
550 mi
1,059 km
658 mi
CO2 score
264 g/km
-
Trunk score
680 L
24.0 cu ft
355 L
12.5 cu ft
Power-to-weight score
192 hp/t
143 kW/t
5.2 kg/hp
142 hp/t
106 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 (X166) GLS 500Mercedes-Benz GLS (X167) Facelift 2026 GLS 450d
Consumption11.3 L/100 km20.8 mpg US25 mpg UK8.5 L/100 km27.7 mpg US33.2 mpg UK
Cost / 100 km19.78 LC100 km14.88 LC100 km
Cost / 100 mi31.82 LC100 mi23.94 LC100 mi
Annual fuel used1,695 L448 US gal373 UK gal1,275 L337 US gal280 UK gal
Annual fuel cost2,966 LC/year2,231 LC/year

Head-to-head comparisons

Mercedes-Benz GLS (X166) GLS 500

  • Has 89 hp more
  • Is 220 kg lighter
  • Is 0.4 s quicker from 0-100 km/h
  • Has 51 hp/t better power-to-weight
  • Has 325 L more trunk volume

Pros

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

Cons

  • Highest combined fuel consumption

Mercedes-Benz GLS (X167) Facelift 2026 GLS 450d

  • Has 50 Nm more
  • Uses 2.8 L/100 km less fuel
  • Has 174 km (108 mi) more estimated range

Pros

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

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Heaviest
  • Smallest trunk

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Engine or modification
Mercedes-Benz GLS (X166) GLS 500
Mercedes-Benz GLS (X167) GLS 450d
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Mercedes-Benz GLS (X166) GLS 500 vs Mercedes-Benz GLS (X167) · Facelift 2026 GLS 450d - car comparison - FastVsFaster