Car comparison

Mercedes-Benz C-class Coupe (C205) · Facelift 2018 AMG C 63 S V8vsKTM X-Bow GT-XR 2.5 TFSI

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

New comparison

Mercedes-Benz C-class Coupe (C205) · Facelift 2018

AMG C 63 S V8

510 hp3982 ccGasolineRWDAutomaticTwin-turboCoupe2018-2023
VS

KTM X-Bow GT-XR

2.5 TFSI

500 hp2480 ccGasolineRWDDual-clutchTurbochargedCoupe2023-present

Comparison overview

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

Best choices

KTM X-Bow GT-XR 2.5 TFSI

  • Quickest 0-100 km/h
    3.4 s
  • Lightest
    1,130 kg
    2,491 lb
  • Best power-to-weight
    442 hp/t
    330 kW/t
    2.3 kg/hp
  • Lowest combined fuel consumption
    9.1 L/100 km
    25.8 mpg US
    31.0 mpg UK
  • Best estimated range
    1,055 km
    656 mi
  • Best performance score
    91/100
  • Best economy score
    82/100

Specification comparison

Specification comparison
ModelMercedes-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V8KTMX-Bow GT-XR2.5 TFSI
Power
510hp380kW
500hp373kW
Torque
700Nm516lb-ft
581Nm429lb-ft
Curb weight
1,745kg3,847lb
1,130kg2,491lb
Gross weight
2,160kg4,762lb
1,600kg3,527lb
Top speed
Unrestricted
305 km/h190 mph
Restricted
290 km/h180 mph
Calculated
Unrestricted
295 km/h183 mph
Restricted
280 km/h174 mph
Calculated
To 99% top speed
56.7s99% target: 302 km/h / 188 mph
Calculated
37.0s99% target: 292 km/h / 181 mph
Calculated
0-100 km/h
3.9s
3.4s
0-200 km/h
11.5s
Calculated
9.2s
Calculated
0-60 mph
3.7s
Calculated
3.3s
Calculated
Fuel consumption
10.1L/100 km23.3mpg US28.0mpg UK
9.1L/100 km25.8mpg US31.0mpg UK
Fuel consumption city
14L/100 km16.8mpg US20.2mpg UK
-
Fuel consumption highway
7.8L/100 km30.2mpg US36.2mpg UK
-
Quarter mile
11.7s
Calculated
10.9s
Calculated
Power-to-weight
292hp/t218kW/t133hp/1000 lb
Calculated
442hp/t330kW/t201hp/1000 lb
Calculated
Torque-to-weight
401Nm/t268lb-ft/ton
Calculated
514Nm/t344lb-ft/ton
Calculated
Estimated range
653km406mi
Calculated
1,055km656mi
Calculated
Displacement
3,982cc243cu in
2,480cc151cu in
Length
4,751mm187in
4,626mm182in
Width
1,877mm74in
2,041mm80in
Height
1,401mm55in
1,164mm46in
Wheelbase
2,840mm112in
2,850mm112in
Front track
1,636mm64in
-
Ground clearance
101mm4in
90mm4in
Trunk volume
355L
160L
Doors
2
1
Seats
4
2
Fuel tank
66L
96L
CO2 emissions
230g/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 C-class Coupe (C205) Facelift 2018 AMG C 63 S V8KTM X-Bow GT-XR 2.5 TFSIPowerTorque
  • Mercedes-Benz C-class Coupe (C205) Facelift 2018 AMG C 63 S V8: Power / Torque
  • KTM X-Bow GT-XR 2.5 TFSI: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V85,500-6,250 rpm2,000-4,500 rpm6,500 rpm
KTMX-Bow GT-XR2.5 TFSI6,350 rpm5,550 rpm7,000 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V8KTMX-Bow GT-XR2.5 TFSI
Acceleration checkpoints
0-60 mph
0-97 km/h
3.7 s
3.3 s
0-100 km/h
0-62 mph
3.9 s
3.4 s
0-200 km/h
0-124 mph
11.5 s
9.2 s
Top speed
Unrestricted
305 km/h190 mph
Restricted
290 km/h180 mph
Likely limited
Unrestricted
295 km/h183 mph
Restricted
280 km/h174 mph
Likely limited
Drag race simulation
60 ft
18 m
2.0 s
2.0 s
330 ft
101 m
5.2 s
4.9 s
1/8 mile
201 m
7.7 s
7.3 s
1000 ft
305 m
9.9 s
9.3 s
1/4 mile
402 m
11.7 s
10.9 s
Trap speed
1/4 mile
402 m
202 km/h
126 mph
218 km/h
136 mph

Power comparison

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

Chart data table
VehicleValue
Mercedes-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V8
510 hp
380 kW
KTMX-Bow GT-XR2.5 TFSI
500 hp
373 kW

Mercedes-Benz C-class Coupe (C205) Facelift 2018 AMG C 63 S V8 has 10 hp more than KTM X-Bow GT-XR 2.5 TFSI.

The biggest power difference is between KTM X-Bow GT-XR 2.5 TFSI and Mercedes-Benz C-class Coupe (C205) Facelift 2018 AMG C 63 S V8: 10 hp (7 kW).

Torque comparison

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

Chart data table
VehicleValue
Mercedes-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V8
700 Nm
516 lb-ft
KTMX-Bow GT-XR2.5 TFSI
581 Nm
429 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V8
1,745 kg
3,847 lb
KTMX-Bow GT-XR2.5 TFSI
1,130 kg
2,491 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-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V8
Unrestricted
305 km/h190 mph
Restricted
290 km/h180 mph
KTMX-Bow GT-XR2.5 TFSI
Unrestricted
295 km/h183 mph
Restricted
280 km/h174 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
Mercedes-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V83.9 s
KTMX-Bow GT-XR2.5 TFSI3.4 s

Although Mercedes-Benz C-class Coupe (C205) Facelift 2018 AMG C 63 S V8 has more power, KTM X-Bow GT-XR 2.5 TFSI is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between KTM X-Bow GT-XR 2.5 TFSI and Mercedes-Benz C-class Coupe (C205) Facelift 2018 AMG C 63 S V8: 0.5 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-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V8
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
KTMX-Bow GT-XR2.5 TFSI
9.1 L/100 km
25.8 mpg US
31.0 mpg UK

The biggest fuel consumption difference is between KTM X-Bow GT-XR 2.5 TFSI and Mercedes-Benz C-class Coupe (C205) Facelift 2018 AMG C 63 S V8: 1.0 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-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V8
292 hp/t
218 kW/t
3.4 kg/hp
KTMX-Bow GT-XR2.5 TFSI
442 hp/t
330 kW/t
2.3 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Mercedes-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V8
653 km
406 mi
KTMX-Bow GT-XR2.5 TFSI
1,055 km
656 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Mercedes-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V8
510 hp
380 kW
3.9 s
Unrestricted
305 km/h190 mph
Restricted
290 km/h180 mph
KTMX-Bow GT-XR2.5 TFSI
500 hp
373 kW
3.4 s
Unrestricted
295 km/h183 mph
Restricted
280 km/h174 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-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V8
Power
510 hp
380 kW
0-100 km/h3.9 s
Top speed
Unrestricted
305 km/h190 mph
Restricted
290 km/h180 mph
Doors/seats
2 doors
4 seats
Trunk
355 L
12.5 cu ft
Length
4,751 mm
187.0 in
Height
1,401 mm
55.2 in
KTMX-Bow GT-XR2.5 TFSI
Power
500 hp
373 kW
0-100 km/h3.4 s
Top speed
Unrestricted
295 km/h183 mph
Restricted
280 km/h174 mph
Doors/seats
1 doors
2 seats
Trunk
160 L
5.7 cu ft
Length
4,626 mm
182.1 in
Height
1,164 mm
45.8 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-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V8
Power
510 hp
380 kW
0-100 km/h3.9 s
Top speed
Unrestricted
305 km/h190 mph
Restricted
290 km/h180 mph
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
KTMX-Bow GT-XR2.5 TFSI
Power
500 hp
373 kW
0-100 km/h3.4 s
Top speed
Unrestricted
295 km/h183 mph
Restricted
280 km/h174 mph
9.1 L/100 km
25.8 mpg US
31.0 mpg UK

KTM X-Bow GT-XR 2.5 TFSI 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-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V8
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
3.9 s
KTMX-Bow GT-XR2.5 TFSI
9.1 L/100 km
25.8 mpg US
31.0 mpg UK
3.4 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-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V8
292 hp/t
218 kW/t
3.4 kg/hp
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
KTMX-Bow GT-XR2.5 TFSI
442 hp/t
330 kW/t
2.3 kg/hp
9.1 L/100 km
25.8 mpg US
31.0 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleMercedes-BenzC-class Coupe (C205)Facelift 2018AMG C 63 S V8KTMX-Bow GT-XR2.5 TFSI
Power
510 hp
380 kW
500 hp
373 kW
Torque
700 Nm
516 lb-ft
581 Nm
429 lb-ft
Acceleration
3.9 s
3.4 s
Top speed
Unrestricted
305 km/h190 mph
Restricted
290 km/h180 mph
Unrestricted
295 km/h183 mph
Restricted
280 km/h174 mph
Lightness
1,745 kg
3,847 lb
1,130 kg
2,491 lb
Fuel consumption
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
9.1 L/100 km
25.8 mpg US
31.0 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
355 L
12.5 cu ft
Length
4,751 mm
187.0 in
Height
1,401 mm
55.2 in
Doors/seats
1 doors
2 seats
Trunk
160 L
5.7 cu ft
Length
4,626 mm
182.1 in
Height
1,164 mm
45.8 in
Range score
653 km
406 mi
1,055 km
656 mi
CO2 score
230 g/km
-
Trunk score
355 L
12.5 cu ft
160 L
5.7 cu ft
Power-to-weight score
292 hp/t
218 kW/t
3.4 kg/hp
442 hp/t
330 kW/t
2.3 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 C-class Coupe (C205) Facelift 2018 AMG C 63 S V8KTM X-Bow GT-XR 2.5 TFSI
Consumption10.1 L/100 km23.3 mpg US28 mpg UK9.1 L/100 km25.8 mpg US31 mpg UK
Cost / 100 km17.68 LC100 km15.92 LC100 km
Cost / 100 mi28.45 LC100 mi25.63 LC100 mi
Annual fuel used1,515 L400 US gal333 UK gal1,365 L361 US gal300 UK gal
Annual fuel cost2,651 LC/year2,389 LC/year

Head-to-head comparisons

KTM X-Bow GT-XR 2.5 TFSI

  • Is 615 kg lighter
  • Is 0.5 s quicker from 0-100 km/h
  • Uses 1.0 L/100 km less fuel
  • Has 150 hp/t better power-to-weight
  • Has 401 km (249 mi) more estimated range

Pros

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

Cons

  • Lowest power
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
Mercedes-Benz C-class Coupe (C205) AMG C 63 S V8
KTM X-Bow GT-XR 2.5 TFSI
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2 vehicles selected

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