Car comparison

Mercedes-Benz GLS (X166) GLS 350dvsMercedes-Benz GLA (X156) · Facelift 2017 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
VS

Mercedes-Benz GLA (X156) · Facelift 2017

GLA 220d

177 hp2143 ccDieselAWDDual-clutchTurbochargedSUV2017-2018

Comparison overview

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

Best choices

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) Facelift 2017 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
ModelMercedes-BenzGLS (X166)GLS 350dMercedes-BenzGLA (X156)Facelift 2017GLA 220d
Power
258hp192kW
177hp132kW
Torque
620Nm457lb-ft
350Nm258lb-ft
Curb weight
2,380kg5,247lb
1,520kg3,351lb
Gross weight
3,250kg7,165lb
2,090kg4,608lb
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
4,424mm174in
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) Facelift 2017 GLA 220dPowerTorque
  • Mercedes-Benz GLS (X166) GLS 350d: Power / Torque
  • Mercedes-Benz GLA (X156) Facelift 2017 GLA 220d: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzGLS (X166)GLS 350d3,400 rpm1,600-2,400 rpm3,650 rpm
Mercedes-BenzGLA (X156)Facelift 2017GLA 220d3,600-3,800 rpm1,400-3,400 rpm4,050 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzGLS (X166)GLS 350dMercedes-BenzGLA (X156)Facelift 2017GLA 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
VehicleValue
Mercedes-BenzGLS (X166)GLS 350d
258 hp
192 kW
Mercedes-BenzGLA (X156)Facelift 2017GLA 220d
177 hp
132 kW

Mercedes-Benz GLS (X166) GLS 350d has 81 hp more than Mercedes-Benz GLA (X156) Facelift 2017 GLA 220d.

The biggest power difference is between Mercedes-Benz GLA (X156) Facelift 2017 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
VehicleValue
Mercedes-BenzGLS (X166)GLS 350d
620 Nm
457 lb-ft
Mercedes-BenzGLA (X156)Facelift 2017GLA 220d
350 Nm
258 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLS (X166)GLS 350d
2,380 kg
5,247 lb
Mercedes-BenzGLA (X156)Facelift 2017GLA 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
VehicleValue
Mercedes-BenzGLS (X166)GLS 350d
222 km/h
138 mph
Mercedes-BenzGLA (X156)Facelift 2017GLA 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
VehicleValue
Mercedes-BenzGLS (X166)GLS 350d7.8 s
Mercedes-BenzGLA (X156)Facelift 2017GLA 220d7.7 s

Although Mercedes-Benz GLS (X166) GLS 350d has more power, Mercedes-Benz GLA (X156) Facelift 2017 GLA 220d is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Mercedes-Benz GLA (X156) Facelift 2017 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
VehicleValue
Mercedes-BenzGLS (X166)GLS 350d
7.6 L/100 km
30.9 mpg US
37.2 mpg UK
Mercedes-BenzGLA (X156)Facelift 2017GLA 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) Facelift 2017 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
VehicleValue
Mercedes-BenzGLS (X166)GLS 350d
108 hp/t
81 kW/t
9.2 kg/hp
Mercedes-BenzGLA (X156)Facelift 2017GLA 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
VehicleValue
Mercedes-BenzGLS (X166)GLS 350d
1,316 km
818 mi
Mercedes-BenzGLA (X156)Facelift 2017GLA 220d
1,120 km
696 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Mercedes-BenzGLS (X166)GLS 350d
258 hp
192 kW
7.8 s
222 km/h
138 mph
Mercedes-BenzGLA (X156)Facelift 2017GLA 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.

Chart data table
VehiclePerformance scorePracticality score
Mercedes-BenzGLS (X166)GLS 350d
Power
258 hp
192 kW
0-100 km/h7.8 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)Facelift 2017GLA 220d
Power
177 hp
132 kW
0-100 km/h7.7 s
Top speed
218 km/h
135 mph
Doors/seats
5 doors
5 seats
Trunk
421 L
14.9 cu ft
Length
4,424 mm
174.2 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.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
Mercedes-BenzGLS (X166)GLS 350d
Power
258 hp
192 kW
0-100 km/h7.8 s
Top speed
222 km/h
138 mph
7.6 L/100 km
30.9 mpg US
37.2 mpg UK
Mercedes-BenzGLA (X156)Facelift 2017GLA 220d
Power
177 hp
132 kW
0-100 km/h7.7 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
VehicleFuel consumption, L/100 km0-100 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)Facelift 2017GLA 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
VehiclePower-to-weight, hp/tFuel 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)Facelift 2017GLA 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

Detailed score breakdown
VehicleMercedes-BenzGLS (X166)GLS 350dMercedes-BenzGLA (X156)Facelift 2017GLA 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
4,424 mm
174.2 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
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 350dMercedes-Benz GLA (X156) Facelift 2017 GLA 220d
Consumption7.6 L/100 km30.9 mpg US37.2 mpg UK5 L/100 km47 mpg US56.5 mpg UK
Cost / 100 km13.30 LC100 km8.75 LC100 km
Cost / 100 mi21.40 LC100 mi14.08 LC100 mi
Annual fuel used1,140 L301 US gal251 UK gal750 L198 US gal165 UK gal
Annual fuel cost1,995 LC/year1,313 LC/year

Head-to-head comparisons

Mercedes-Benz GLS (X166) GLS 350d

  • Has 81 hp more
  • Has 270 Nm more
  • Has 4 km/h (2 mph) higher top speed
  • Has 196 km (122 mi) more estimated range
  • Has 259 L more trunk volume

Pros

  • Highest top speed
  • Most powerful
  • Highest torque
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Heaviest

Mercedes-Benz GLA (X156) Facelift 2017 GLA 220d

  • Is 860 kg lighter
  • Is 0.1 s quicker from 0-100 km/h
  • Uses 2.6 L/100 km less fuel
  • Has 8 hp/t better power-to-weight

Pros

  • Quickest 0-100 km/h in this comparison
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio

Cons

  • Lowest power
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
Mercedes-Benz GLS (X166) GLS 350d
Mercedes-Benz GLA (X156) GLA 220d
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