Car comparison

Mercedes-Benz GLS (X167) 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)

GLS 450

367 hp2999 ccGasolineAWDAutomaticTurbochargedSUV2020-2023

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.

Mercedes-Benz GLS (X167) GLS 450

Quickest 0-100 km/h
6.2 s
Fastest top speed
246 km/h
153 mph
Most powerful
367 hp
274 kW
Highest torque
500 Nm
369 lb-ft
Best power-to-weight
154 hp/t
115 kW/t
6.5 kg/hp
Lowest combined fuel consumption
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
Lowest highway consumption
7.9 L/100 km
29.8 mpg US
35.8 mpg UK
Best performance score
63/100
Best economy score
82/100

Mercedes-Benz GLS (X166) GLS 400

Lightest
2,360 kg
5,203 lb
Lowest city consumption
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
Best estimated range
1,064 km
661 mi
Largest trunk
680 L
Best overall score
71/100
Best practicality score
93/100

Specification comparison

Specification comparison
Model	Mercedes-BenzGLS (X167)GLS 450	Mercedes-BenzGLS (X166)GLS 400
Power	367hp274kW	333hp248kW
Torque	500Nm369lb-ft	480Nm354lb-ft
Curb weight	2,385kg5,258lb	2,360kg5,203lb
Gross weight	3,230kg7,121lb	3,250kg7,165lb
Top speed	246 km/h 153 mph	240 km/h 149 mph
To 99% top speed	91.5s99% target: 244 km/h / 151 mph Calculated	93.3s99% target: 238 km/h / 148 mph Calculated
0-100 km/h	6.2s	6.6s
0-200 km/h	26.3s Calculated	29.1s Calculated
0-60 mph	5.9s Calculated	6.2s Calculated
Fuel consumption	9.4L/100 km25mpg US30.1mpg UK	9.4L/100 km25mpg US30.1mpg UK
Fuel consumption city	12.2L/100 km19.3mpg US23.2mpg UK	11.7L/100 km20.1mpg US24.1mpg UK
Fuel consumption highway	7.9L/100 km29.8mpg US35.8mpg UK	8L/100 km29.4mpg US35.3mpg UK
Quarter mile	14.3s Calculated	14.7s Calculated
Power-to-weight	154hp/t115kW/t70hp/1000 lb Calculated	141hp/t105kW/t64hp/1000 lb Calculated
Torque-to-weight	210Nm/t140lb-ft/ton Calculated	203Nm/t136lb-ft/ton Calculated
Estimated range	957km595mi Calculated	1,064km661mi Calculated
Displacement	2,999cc183cu in	2,996cc183cu in
Length	5,207mm205in	5,130mm202in
Width	2,030mm80in	1,934mm76in
Height	1,838mm72in	1,850mm73in
Wheelbase	3,135mm123in	3,075mm121in
Front track	1,669mm66in	1,655mm65in
Rear track	1,692mm67in	1,675mm66in
Ground clearance	215mm8in	-
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.

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	Mercedes-BenzGLS (X167)GLS 450	Mercedes-BenzGLS (X166)GLS 400
	Acceleration checkpoints
0-60 mph 0-97 km/h	5.9 s	6.2 s
0-100 km/h 0-62 mph	6.2 s	6.6 s
0-200 km/h 0-124 mph	26.3 s	29.1 s
Top speed	246 km/h 153 mph	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	9.3 s	9.5 s
1000 ft 305 m	12.0 s	12.3 s
1/4 mile 402 m	14.3 s	14.7 s
Trap speed 1/4 mile 402 m	158 km/h 98 mph	154 km/h 96 mph

Power comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLS (X167)GLS 450	367 hp 274 kW
Mercedes-BenzGLS (X166)GLS 400	333 hp 248 kW

Mercedes-Benz GLS (X167) GLS 450 has 34 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) GLS 450: 34 hp (25 kW).

Torque comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLS (X167)GLS 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
Vehicle	Value
Mercedes-BenzGLS (X167)GLS 450	2,385 kg 5,258 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
Vehicle	Value
Mercedes-BenzGLS (X167)GLS 450	246 km/h 153 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
Vehicle	Value
Mercedes-BenzGLS (X167)GLS 450	6.2 s
Mercedes-BenzGLS (X166)GLS 400	6.6 s

The biggest 0-100 km/h difference is between Mercedes-Benz GLS (X167) GLS 450 and Mercedes-Benz GLS (X166) GLS 400: 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
Vehicle	Value
Mercedes-BenzGLS (X167)GLS 450	9.4 L/100 km 25.0 mpg US 30.1 mpg UK
Mercedes-BenzGLS (X166)GLS 400	9.4 L/100 km 25.0 mpg US 30.1 mpg UK

Power-to-weight comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLS (X167)GLS 450	154 hp/t 115 kW/t 6.5 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
Vehicle	Value
Mercedes-BenzGLS (X167)GLS 450	957 km 595 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
Vehicle	Power	Acceleration	Top speed
Mercedes-BenzGLS (X167)GLS 450	367 hp 274 kW	6.2 s	246 km/h 153 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.

Vehicle

Performance score

Practicality score

Mercedes-BenzGLS (X167)GLS 450

Power	367 hp 274 kW
0-100 km/h	6.2 s
Top speed 246 km/h 153 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

Mercedes-BenzGLS (X166)GLS 400

Power	333 hp 248 kW
0-100 km/h	6.6 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.

Vehicle

Performance score

Fuel economy score

Mercedes-BenzGLS (X167)GLS 450

Power	367 hp 274 kW
0-100 km/h	6.2 s
Top speed 246 km/h 153 mph

9.4 L/100 km

25.0 mpg US

30.1 mpg UK

Mercedes-BenzGLS (X166)GLS 400

Power	333 hp 248 kW
0-100 km/h	6.6 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) 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
Vehicle	Fuel consumption, L/100 km	0-100 km/h, s
Mercedes-BenzGLS (X167)GLS 450	9.4 L/100 km 25.0 mpg US 30.1 mpg UK	6.2 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
Vehicle	Power-to-weight, hp/t	Fuel consumption, L/100 km
Mercedes-BenzGLS (X167)GLS 450	154 hp/t 115 kW/t 6.5 kg/hp	9.4 L/100 km 25.0 mpg US 30.1 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

Vehicle

Mercedes-BenzGLS (X167)GLS 450

Mercedes-BenzGLS (X166)GLS 400

Power

367 hp

274 kW

333 hp

248 kW

Torque

500 Nm

369 lb-ft

480 Nm

354 lb-ft

Acceleration

6.2 s

6.6 s

Top speed

246 km/h

153 mph

240 km/h

149 mph

Lightness

2,385 kg

5,258 lb

2,360 kg

5,203 lb

Fuel consumption

9.4 L/100 km

25.0 mpg US

30.1 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	5,207 mm 205.0 in
Height	1,838 mm 72.4 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

957 km

595 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

154 hp/t

115 kW/t

6.5 kg/hp

141 hp/t

105 kW/t

7.1 kg/hp

Overall

Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Average annual distanceDistance unitFuel price in your local currencyPrice unit

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
Vehicle	Mercedes-Benz GLS (X167) GLS 450	Mercedes-Benz GLS (X166) GLS 400
Consumption	9.4 L/100 km25 mpg US30.1 mpg UK	9.4 L/100 km25 mpg US30.1 mpg UK
Cost / 100 km	16.45 LC100 km	16.45 LC100 km
Cost / 100 mi	26.47 LC100 mi	26.47 LC100 mi
Annual fuel used	1,410 L372 US gal310 UK gal	1,410 L372 US gal310 UK gal
Annual fuel cost	2,468 LC/year	2,468 LC/year