Car comparison

Mercedes-Benz GLS (X166) GLS 400vsMercedes-Benz GLS (X167) · Facelift 2026 GLS 350d

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

Mercedes-Benz GLS (X167) · Facelift 2026

GLS 350d

313 hp2989 ccDieselAWDAutomaticTwin-turboSUV2026-present

Comparison overview

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

Mercedes-Benz GLS (X166) GLS 400

Fastest top speed
240 km/h
149 mph
Most powerful
333 hp
248 kW
Lightest
2,360 kg
5,203 lb
Best power-to-weight
141 hp/t
105 kW/t
7.1 kg/hp
Best estimated range
1,064 km
661 mi
Largest trunk
680 L
Best overall score
71/100
Best practicality score
93/100

Mercedes-Benz GLS (X167) Facelift 2026 GLS 350d

Quickest 0-100 km/h
6.2 s
Highest torque
650 Nm
479 lb-ft
Lowest combined fuel consumption
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
Best performance score
62/100
Best economy score
84/100

Specification comparison

Specification comparison
Model	Mercedes-BenzGLS (X166)GLS 400	Mercedes-BenzGLS (X167)Facelift 2026GLS 350d
Power	333hp248kW	313hp233kW
Torque	480Nm354lb-ft	650Nm479lb-ft
Curb weight	2,360kg5,203lb	2,595kg5,721lb
Gross weight	3,250kg7,165lb	3,485kg7,683lb
Top speed	240 km/h 149 mph	238 km/h 148 mph
To 99% top speed	93.3s99% target: 238 km/h / 148 mph Calculated	92.5s99% target: 236 km/h / 146 mph Calculated
0-100 km/h	6.6s	6.2s
0-200 km/h	29.1s Calculated	28.9s Calculated
0-60 mph	6.2s Calculated	5.9s Calculated
Fuel consumption	9.4L/100 km25mpg US30.1mpg UK	8.5L/100 km27.7mpg US33.2mpg UK
Fuel consumption city	11.7L/100 km20.1mpg US24.1mpg UK	-
Fuel consumption highway	8L/100 km29.4mpg US35.3mpg UK	-
Quarter mile	14.7s Calculated	14.4s Calculated
Power-to-weight	141hp/t105kW/t64hp/1000 lb Calculated	121hp/t90kW/t55hp/1000 lb Calculated
Torque-to-weight	203Nm/t136lb-ft/ton Calculated	250Nm/t168lb-ft/ton Calculated
Estimated range	1,064km661mi Calculated	1,059km658mi Calculated
Displacement	2,996cc183cu 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	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 GLS (X167) Facelift 2026 GLS 350dPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
Mercedes-BenzGLS (X166)GLS 400	5,250-6,000 rpm	1,600-4,000 rpm	6,250 rpm
Mercedes-BenzGLS (X167)Facelift 2026GLS 350d	3,600-4,400 rpm	1,200-3,200 rpm	4,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	Mercedes-BenzGLS (X166)GLS 400	Mercedes-BenzGLS (X167)Facelift 2026GLS 350d
	Acceleration checkpoints
0-60 mph 0-97 km/h	6.2 s	5.9 s
0-100 km/h 0-62 mph	6.6 s	6.2 s
0-200 km/h 0-124 mph	29.1 s	28.9 s
Top speed	240 km/h 149 mph	238 km/h 148 mph
	Drag race simulation
60 ft 18 m	2.3 s	2.2 s
330 ft 101 m	6.3 s	6.1 s
1/8 mile 201 m	9.5 s	9.3 s
1000 ft 305 m	12.3 s	12.1 s
1/4 mile 402 m	14.7 s	14.4 s
Trap speed 1/4 mile 402 m	154 km/h 96 mph	156 km/h 97 mph

Power comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLS (X166)GLS 400	333 hp 248 kW
Mercedes-BenzGLS (X167)Facelift 2026GLS 350d	313 hp 233 kW

Mercedes-Benz GLS (X166) GLS 400 has 20 hp more than Mercedes-Benz GLS (X167) Facelift 2026 GLS 350d.

The biggest power difference is between Mercedes-Benz GLS (X167) Facelift 2026 GLS 350d and Mercedes-Benz GLS (X166) GLS 400: 20 hp (15 kW).

Torque comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLS (X166)GLS 400	480 Nm 354 lb-ft
Mercedes-BenzGLS (X167)Facelift 2026GLS 350d	650 Nm 479 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLS (X166)GLS 400	2,360 kg 5,203 lb
Mercedes-BenzGLS (X167)Facelift 2026GLS 350d	2,595 kg 5,721 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 (X166)GLS 400	240 km/h 149 mph
Mercedes-BenzGLS (X167)Facelift 2026GLS 350d	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
Vehicle	Value
Mercedes-BenzGLS (X166)GLS 400	6.6 s
Mercedes-BenzGLS (X167)Facelift 2026GLS 350d	6.2 s

Although Mercedes-Benz GLS (X166) GLS 400 has more power, Mercedes-Benz GLS (X167) Facelift 2026 GLS 350d is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Mercedes-Benz GLS (X167) Facelift 2026 GLS 350d 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 (X166)GLS 400	9.4 L/100 km 25.0 mpg US 30.1 mpg UK
Mercedes-BenzGLS (X167)Facelift 2026GLS 350d	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 350d and Mercedes-Benz GLS (X166) GLS 400: 0.9 L/100 km.

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 (X166)GLS 400	141 hp/t 105 kW/t 7.1 kg/hp
Mercedes-BenzGLS (X167)Facelift 2026GLS 350d	121 hp/t 90 kW/t 8.3 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLS (X166)GLS 400	1,064 km 661 mi
Mercedes-BenzGLS (X167)Facelift 2026GLS 350d	1,059 km 658 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
Mercedes-BenzGLS (X166)GLS 400	333 hp 248 kW	6.6 s	240 km/h 149 mph
Mercedes-BenzGLS (X167)Facelift 2026GLS 350d	313 hp 233 kW	6.2 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.

Vehicle

Performance score

Practicality score

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

Mercedes-BenzGLS (X167)Facelift 2026GLS 350d

Power	313 hp 233 kW
0-100 km/h	6.2 s
Top speed 238 km/h 148 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.

Vehicle

Performance score

Fuel economy score

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-BenzGLS (X167)Facelift 2026GLS 350d

Power	313 hp 233 kW
0-100 km/h	6.2 s
Top speed 238 km/h 148 mph

8.5 L/100 km

27.7 mpg US

33.2 mpg UK

Mercedes-Benz GLS (X167) Facelift 2026 GLS 350d 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 (X166)GLS 400	9.4 L/100 km 25.0 mpg US 30.1 mpg UK	6.6 s
Mercedes-BenzGLS (X167)Facelift 2026GLS 350d	8.5 L/100 km 27.7 mpg US 33.2 mpg UK	6.2 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 (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-BenzGLS (X167)Facelift 2026GLS 350d	121 hp/t 90 kW/t 8.3 kg/hp	8.5 L/100 km 27.7 mpg US 33.2 mpg UK

Detailed score breakdown

Vehicle

Mercedes-BenzGLS (X166)GLS 400

Mercedes-BenzGLS (X167)Facelift 2026GLS 350d

Power

333 hp

248 kW

313 hp

233 kW

Torque

480 Nm

354 lb-ft

650 Nm

479 lb-ft

Acceleration

6.6 s

6.2 s

Top speed

240 km/h

149 mph

238 km/h

148 mph

Lightness

2,360 kg

5,203 lb

2,595 kg

5,721 lb

Fuel consumption

9.4 L/100 km

25.0 mpg US

30.1 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

1,064 km

661 mi

1,059 km

658 mi

CO2 score

218 g/km

Trunk score

680 L

24.0 cu ft

355 L

12.5 cu ft

Power-to-weight score

141 hp/t

105 kW/t

7.1 kg/hp

121 hp/t

90 kW/t

8.3 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 (X166) GLS 400	Mercedes-Benz GLS (X167) Facelift 2026 GLS 350d
Consumption	9.4 L/100 km25 mpg US30.1 mpg UK	8.5 L/100 km27.7 mpg US33.2 mpg UK
Cost / 100 km	16.45 LC100 km	14.88 LC100 km
Cost / 100 mi	26.47 LC100 mi	23.94 LC100 mi
Annual fuel used	1,410 L372 US gal310 UK gal	1,275 L337 US gal280 UK gal
Annual fuel cost	2,468 LC/year	2,231 LC/year