Car comparison

Mercedes-Benz GLS (X166) GLS 350dvsMercedes-Benz GLA (X156) GLA 220d

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

New comparison

Mercedes-Benz GLS (X166)

GLS 350d

258 hp2987 ccDieselAWDAutomaticTurbochargedSUV2015-2019

Mercedes-Benz GLA (X156)

GLA 220d

177 hp2143 ccDieselAWDDual-clutchTurbochargedSUV2015-2017

Comparison overview

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

Mercedes-Benz GLS (X166) GLS 350d

Fastest top speed
222 km/h
138 mph
Most powerful
258 hp
192 kW
Highest torque
620 Nm
457 lb-ft
Best estimated range
1,316 km
818 mi
Largest trunk
680 L
Best overall score
66/100
Best performance score
54/100
Best practicality score
93/100

Mercedes-Benz GLA (X156) GLA 220d

Quickest 0-100 km/h
7.7 s
Lightest
1,520 kg
3,351 lb
Best power-to-weight
116 hp/t
87 kW/t
8.6 kg/hp
Lowest combined fuel consumption
5.0 L/100 km
47.0 mpg US
56.5 mpg UK
Lowest city consumption
5.9 L/100 km
39.9 mpg US
47.9 mpg UK
Lowest highway consumption
4.4 L/100 km
53.5 mpg US
64.2 mpg UK
Best economy score
93/100

Specification comparison

Specification comparison
Model	Mercedes-BenzGLS (X166)GLS 350d	Mercedes-BenzGLA (X156)GLA 220d
Power	258hp192kW	177hp132kW
Torque	620Nm457lb-ft	350Nm258lb-ft
Curb weight	2,380kg5,247lb	1,520kg3,351lb
Gross weight	3,250kg7,165lb	2,075kg4,575lb
Top speed	222 km/h 138 mph	218 km/h 135 mph
To 99% top speed	104.7s99% target: 220 km/h / 137 mph Calculated	76.5s99% target: 216 km/h / 134 mph Calculated
0-100 km/h	7.8s	7.7s
0-200 km/h	43.6s Calculated	38.1s Calculated
0-60 mph	7.3s Calculated	7.3s Calculated
Fuel consumption	7.6L/100 km30.9mpg US37.2mpg UK	5L/100 km47mpg US56.5mpg UK
Fuel consumption city	8.2L/100 km28.7mpg US34.4mpg UK	5.9L/100 km39.9mpg US47.9mpg UK
Fuel consumption highway	7.2L/100 km32.7mpg US39.2mpg UK	4.4L/100 km53.5mpg US64.2mpg UK
Quarter mile	15.7s Calculated	15.6s Calculated
Power-to-weight	108hp/t81kW/t49hp/1000 lb Calculated	116hp/t87kW/t53hp/1000 lb Calculated
Torque-to-weight	261Nm/t174lb-ft/ton Calculated	230Nm/t154lb-ft/ton Calculated
Estimated range	1,316km818mi Calculated	1,120km696mi Calculated
Displacement	2,987cc182cu in	2,143cc131cu in
Length	5,130mm202in	4,417mm174in
Width	1,934mm76in	1,804mm71in
Height	1,850mm73in	1,494mm59in
Wheelbase	3,075mm121in	2,699mm106in
Front track	1,655mm65in	1,569mm62in
Rear track	1,675mm66in	1,560mm61in
Trunk volume	680L	421L
Max trunk volume	2,300L	1,235L
Doors	5	5
Seats	5	5
Fuel tank	100L	56L
CO2 emissions	199g/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 350dMercedes-Benz GLA (X156) GLA 220dPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
Mercedes-BenzGLS (X166)GLS 350d	3,400 rpm	1,600-2,400 rpm	3,650 rpm
Mercedes-BenzGLA (X156)GLA 220d	3,600-3,800 rpm	1,400-3,000 rpm	4,050 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	Mercedes-BenzGLS (X166)GLS 350d	Mercedes-BenzGLA (X156)GLA 220d
	Acceleration checkpoints
0-60 mph 0-97 km/h	7.3 s	7.3 s
0-100 km/h 0-62 mph	7.8 s	7.7 s
0-200 km/h 0-124 mph	43.6 s	38.1 s
Top speed	222 km/h 138 mph	218 km/h 135 mph
	Drag race simulation
60 ft 18 m	2.4 s	2.6 s
330 ft 101 m	6.6 s	6.8 s
1/8 mile 201 m	10.1 s	10.2 s
1000 ft 305 m	13.1 s	13.1 s
1/4 mile 402 m	15.7 s	15.6 s
Trap speed 1/4 mile 402 m	143 km/h 89 mph	148 km/h 92 mph

Power comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLS (X166)GLS 350d	258 hp 192 kW
Mercedes-BenzGLA (X156)GLA 220d	177 hp 132 kW

Mercedes-Benz GLS (X166) GLS 350d has 81 hp more than Mercedes-Benz GLA (X156) GLA 220d.

The biggest power difference is between Mercedes-Benz GLA (X156) GLA 220d and Mercedes-Benz GLS (X166) GLS 350d: 81 hp (60 kW).

Torque comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLS (X166)GLS 350d	620 Nm 457 lb-ft
Mercedes-BenzGLA (X156)GLA 220d	350 Nm 258 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 350d	2,380 kg 5,247 lb
Mercedes-BenzGLA (X156)GLA 220d	1,520 kg 3,351 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 350d	222 km/h 138 mph
Mercedes-BenzGLA (X156)GLA 220d	218 km/h 135 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 350d	7.8 s
Mercedes-BenzGLA (X156)GLA 220d	7.7 s

Although Mercedes-Benz GLS (X166) GLS 350d has more power, Mercedes-Benz GLA (X156) GLA 220d is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Mercedes-Benz GLA (X156) GLA 220d and Mercedes-Benz GLS (X166) GLS 350d: 0.1 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 350d	7.6 L/100 km 30.9 mpg US 37.2 mpg UK
Mercedes-BenzGLA (X156)GLA 220d	5.0 L/100 km 47.0 mpg US 56.5 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz GLA (X156) GLA 220d and Mercedes-Benz GLS (X166) GLS 350d: 2.6 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 350d	108 hp/t 81 kW/t 9.2 kg/hp
Mercedes-BenzGLA (X156)GLA 220d	116 hp/t 87 kW/t 8.6 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 350d	1,316 km 818 mi
Mercedes-BenzGLA (X156)GLA 220d	1,120 km 696 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 350d	258 hp 192 kW	7.8 s	222 km/h 138 mph
Mercedes-BenzGLA (X156)GLA 220d	177 hp 132 kW	7.7 s	218 km/h 135 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 350d

Power	258 hp 192 kW
0-100 km/h	7.8 s
Top speed 222 km/h 138 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-BenzGLA (X156)GLA 220d

Power	177 hp 132 kW
0-100 km/h	7.7 s
Top speed 218 km/h 135 mph

Doors/seats	5 doors 5 seats
Trunk	421 L 14.9 cu ft
Length	4,417 mm 173.9 in
Height	1,494 mm 58.8 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 350d

Power	258 hp 192 kW
0-100 km/h	7.8 s
Top speed 222 km/h 138 mph

7.6 L/100 km

30.9 mpg US

37.2 mpg UK

Mercedes-BenzGLA (X156)GLA 220d

Power	177 hp 132 kW
0-100 km/h	7.7 s
Top speed 218 km/h 135 mph

5.0 L/100 km

47.0 mpg US

56.5 mpg UK

Mercedes-Benz GLS (X166) 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 350d	7.6 L/100 km 30.9 mpg US 37.2 mpg UK	7.8 s
Mercedes-BenzGLA (X156)GLA 220d	5.0 L/100 km 47.0 mpg US 56.5 mpg UK	7.7 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
Vehicle	Power-to-weight, hp/t	Fuel consumption, L/100 km
Mercedes-BenzGLS (X166)GLS 350d	108 hp/t 81 kW/t 9.2 kg/hp	7.6 L/100 km 30.9 mpg US 37.2 mpg UK
Mercedes-BenzGLA (X156)GLA 220d	116 hp/t 87 kW/t 8.6 kg/hp	5.0 L/100 km 47.0 mpg US 56.5 mpg UK

Detailed score breakdown

Vehicle

Mercedes-BenzGLS (X166)GLS 350d

Mercedes-BenzGLA (X156)GLA 220d

Power

258 hp

192 kW

177 hp

132 kW

Torque

620 Nm

457 lb-ft

350 Nm

258 lb-ft

Acceleration

7.8 s

7.7 s

Top speed

222 km/h

138 mph

218 km/h

135 mph

Lightness

2,380 kg

5,247 lb

1,520 kg

3,351 lb

Fuel consumption

7.6 L/100 km

30.9 mpg US

37.2 mpg UK

5.0 L/100 km

47.0 mpg US

56.5 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 5 seats
Trunk	421 L 14.9 cu ft
Length	4,417 mm 173.9 in
Height	1,494 mm 58.8 in

Range score

1,316 km

818 mi

1,120 km

696 mi

CO2 score

199 g/km

Trunk score

680 L

24.0 cu ft

421 L

14.9 cu ft

Power-to-weight score

108 hp/t

81 kW/t

9.2 kg/hp

116 hp/t

87 kW/t

8.6 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 350d	Mercedes-Benz GLA (X156) GLA 220d
Consumption	7.6 L/100 km30.9 mpg US37.2 mpg UK	5 L/100 km47 mpg US56.5 mpg UK
Cost / 100 km	13.30 LC100 km	8.75 LC100 km
Cost / 100 mi	21.40 LC100 mi	14.08 LC100 mi
Annual fuel used	1,140 L301 US gal251 UK gal	750 L198 US gal165 UK gal
Annual fuel cost	1,995 LC/year	1,313 LC/year