Car comparison

Mercedes-Benz GLC Coupe (C253) AMG GLC 63 SvsDavid Brown Speedback GT 5.0 V8

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

New comparison

Mercedes-Benz GLC Coupe (C253)

AMG GLC 63 S

510 hp3982 ccGasolineAWDAutomaticTwin-turboCoupe2017-2019
VS

David Brown Speedback GT

5.0 V8

510 hp5000 ccGasolineRWDAutomaticTwin-turboCoupe2014-2017

Comparison overview

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

Best choices

Mercedes-Benz GLC Coupe (C253) AMG GLC 63 S

  • Quickest 0-100 km/h
    3.8 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    510 hp
    380 kW
  • Highest torque
    700 Nm
    516 lb-ft
  • Lowest combined fuel consumption
    10.7 L/100 km
    22.0 mpg US
    26.4 mpg UK
  • Lowest city consumption
    14.1 L/100 km
    16.7 mpg US
    20.0 mpg UK
  • Lowest CO2 emissions
    244 g/km
  • Best estimated range
    617 km
    383 mi
  • Best overall score
    78/100
  • Best performance score
    85/100
  • Best economy score
    78/100
  • Best practicality score
    62/100

David Brown Speedback GT 5.0 V8

  • Lightest
    1,920 kg
    4,233 lb
  • Best power-to-weight
    266 hp/t
    198 kW/t
    3.8 kg/hp
  • Lowest highway consumption
    8.6 L/100 km
    27.4 mpg US
    32.8 mpg UK

Specification comparison

Specification comparison
ModelMercedes-BenzGLC Coupe (C253)AMG GLC 63 SDavid BrownSpeedback GT5.0 V8
Power
510hp380kW
510hp380kW
Torque
700Nm516lb-ft
625Nm461lb-ft
Curb weight
1,945kg4,288lb
1,920kg4,233lb
Gross weight
2,590kg5,710lb
2,129kg4,694lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
49.6s99% target: 262 km/h / 163 mph
Calculated
62.3s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
3.8s
4.8s
0-200 km/h
13.0s
Calculated
16.4s
Calculated
0-60 mph
3.6s
Calculated
4.6s
Calculated
Fuel consumption
10.7L/100 km22mpg US26.4mpg UK
12.3L/100 km19.1mpg US23.0mpg UK
Fuel consumption city
14.1L/100 km16.7mpg US20.0mpg UK
18.9L/100 km12.4mpg US14.9mpg UK
Fuel consumption highway
8.7L/100 km27mpg US32.5mpg UK
8.6L/100 km27.4mpg US32.8mpg UK
Quarter mile
11.8s
Calculated
12.9s
Calculated
Power-to-weight
262hp/t196kW/t119hp/1000 lb
Calculated
266hp/t198kW/t120hp/1000 lb
Calculated
Torque-to-weight
360Nm/t241lb-ft/ton
Calculated
326Nm/t218lb-ft/ton
Calculated
Estimated range
617km383mi
Calculated
577km359mi
Calculated
Displacement
3,982cc243cu in
5,000cc305cu in
Length
4,745mm187in
4,760mm187in
Width-
1,860mm73in
Height
1,584mm62in
1,350mm53in
Wheelbase
2,873mm113in
2,750mm108in
Front track
1,662mm65in
-
Rear track
1,649mm65in
-
Trunk volume-
243L
Max trunk volume-
502L
Doors
4
2
Seats
4
2
Fuel tank
66L
71L
CO2 emissions
244g/km
292g/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 GLC Coupe (C253) AMG GLC 63 SDavid Brown Speedback GT 5.0 V8PowerTorque
  • Mercedes-Benz GLC Coupe (C253) AMG GLC 63 S: Power / Torque
  • David Brown Speedback GT 5.0 V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S5,500-6,250 rpm1,750-4,500 rpm6,500 rpm
David BrownSpeedback GT5.0 V86,000-6,500 rpm2,500-5,000 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzGLC Coupe (C253)AMG GLC 63 SDavid BrownSpeedback GT5.0 V8
Acceleration checkpoints
0-60 mph
0-97 km/h
3.6 s
4.6 s
0-100 km/h
0-62 mph
3.8 s
4.8 s
0-200 km/h
0-124 mph
13.0 s
16.4 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
1.9 s
2.2 s
330 ft
101 m
5.1 s
5.6 s
1/8 mile
201 m
7.7 s
8.5 s
1000 ft
305 m
9.9 s
10.9 s
1/4 mile
402 m
11.8 s
12.9 s
Trap speed
1/4 mile
402 m
192 km/h
120 mph
180 km/h
112 mph

Power comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
510 hp
380 kW
David BrownSpeedback GT5.0 V8
510 hp
380 kW

Torque comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
700 Nm
516 lb-ft
David BrownSpeedback GT5.0 V8
625 Nm
461 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
1,945 kg
4,288 lb
David BrownSpeedback GT5.0 V8
1,920 kg
4,233 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-BenzGLC Coupe (C253)AMG GLC 63 S
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
David BrownSpeedback GT5.0 V8
Unrestricted
265 km/h165 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-BenzGLC Coupe (C253)AMG GLC 63 S3.8 s
David BrownSpeedback GT5.0 V84.8 s

The biggest 0-100 km/h difference is between Mercedes-Benz GLC Coupe (C253) AMG GLC 63 S and David Brown Speedback GT 5.0 V8: 1.0 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-BenzGLC Coupe (C253)AMG GLC 63 S
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
David BrownSpeedback GT5.0 V8
12.3 L/100 km
19.1 mpg US
23.0 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz GLC Coupe (C253) AMG GLC 63 S and David Brown Speedback GT 5.0 V8: 1.6 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-BenzGLC Coupe (C253)AMG GLC 63 S
262 hp/t
196 kW/t
3.8 kg/hp
David BrownSpeedback GT5.0 V8
266 hp/t
198 kW/t
3.8 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
617 km
383 mi
David BrownSpeedback GT5.0 V8
577 km
359 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
510 hp
380 kW
3.8 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
David BrownSpeedback GT5.0 V8
510 hp
380 kW
4.8 s
Unrestricted
265 km/h165 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-BenzGLC Coupe (C253)AMG GLC 63 S
Power
510 hp
380 kW
0-100 km/h3.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
4 seats
Trunk-
Length
4,745 mm
186.8 in
Height
1,584 mm
62.4 in
David BrownSpeedback GT5.0 V8
Power
510 hp
380 kW
0-100 km/h4.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk
243 L
8.6 cu ft
Length
4,760 mm
187.4 in
Height
1,350 mm
53.1 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-BenzGLC Coupe (C253)AMG GLC 63 S
Power
510 hp
380 kW
0-100 km/h3.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
David BrownSpeedback GT5.0 V8
Power
510 hp
380 kW
0-100 km/h4.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
12.3 L/100 km
19.1 mpg US
23.0 mpg UK

Mercedes-Benz GLC Coupe (C253) AMG GLC 63 S 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-BenzGLC Coupe (C253)AMG GLC 63 S
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
3.8 s
David BrownSpeedback GT5.0 V8
12.3 L/100 km
19.1 mpg US
23.0 mpg UK
4.8 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-BenzGLC Coupe (C253)AMG GLC 63 S
262 hp/t
196 kW/t
3.8 kg/hp
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
David BrownSpeedback GT5.0 V8
266 hp/t
198 kW/t
3.8 kg/hp
12.3 L/100 km
19.1 mpg US
23.0 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleMercedes-BenzGLC Coupe (C253)AMG GLC 63 SDavid BrownSpeedback GT5.0 V8
Power
510 hp
380 kW
510 hp
380 kW
Torque
700 Nm
516 lb-ft
625 Nm
461 lb-ft
Acceleration
3.8 s
4.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,945 kg
4,288 lb
1,920 kg
4,233 lb
Fuel consumption
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
12.3 L/100 km
19.1 mpg US
23.0 mpg UK
Practicality
Doors/seats
4 doors
4 seats
Trunk-
Length
4,745 mm
186.8 in
Height
1,584 mm
62.4 in
Doors/seats
2 doors
2 seats
Trunk
243 L
8.6 cu ft
Length
4,760 mm
187.4 in
Height
1,350 mm
53.1 in
Range score
617 km
383 mi
577 km
359 mi
CO2 score
244 g/km
292 g/km
Trunk score
-
243 L
8.6 cu ft
Power-to-weight score
262 hp/t
196 kW/t
3.8 kg/hp
266 hp/t
198 kW/t
3.8 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 GLC Coupe (C253) AMG GLC 63 SDavid Brown Speedback GT 5.0 V8
Consumption10.7 L/100 km22 mpg US26.4 mpg UK12.3 L/100 km19.1 mpg US23 mpg UK
Cost / 100 km18.72 LC100 km21.53 LC100 km
Cost / 100 mi30.13 LC100 mi34.64 LC100 mi
Annual fuel used1,605 L424 US gal353 UK gal1,845 L487 US gal406 UK gal
Annual fuel cost2,809 LC/year3,229 LC/year

Head-to-head comparisons

Mercedes-Benz GLC Coupe (C253) AMG GLC 63 S

  • Has 75 Nm more
  • Is 1.0 s quicker from 0-100 km/h
  • Uses 1.6 L/100 km less fuel
  • Has 40 km (25 mi) more estimated range
  • Emits 48 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Heaviest

David Brown Speedback GT 5.0 V8

  • Is 25 kg lighter
  • Has 3 hp/t better power-to-weight

Pros

  • Lightest
  • Best power-to-weight ratio

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
Mercedes-Benz GLC Coupe (C253) AMG GLC 63 S
David Brown Speedback GT 5.0 V8
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