Car comparison

Alfa Romeo Giulia (952) GTA 2.9 V6vsMercedes-Benz C-class (W205) · Facelift 2018 AMG C 63 S V8

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

New comparison

Alfa Romeo Giulia (952)

GTA 2.9 V6

540 hp2891 ccGasolineRWDAutomaticTurbochargedSedan2020-2021
VS

Mercedes-Benz C-class (W205) · Facelift 2018

AMG C 63 S V8

510 hp3982 ccGasolineRWDAutomaticTwin-turboSedan2018-2021

Comparison overview

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

Best choices

Alfa Romeo Giulia (952) GTA 2.9 V6

  • Quickest 0-100 km/h
    3.6 s
  • Fastest top speed
    315 km/h
    196 mph Unrestricted
    300 km/h
    186 mph Restricted
  • Most powerful
    540 hp
    403 kW
  • Lightest
    1,605 kg
    3,538 lb
  • Best power-to-weight
    336 hp/t
    251 kW/t
    3.0 kg/hp
  • Largest trunk
    480 L
  • Best performance score
    90/100

Mercedes-Benz C-class (W205) Facelift 2018 AMG C 63 S V8

  • Highest torque
    700 Nm
    516 lb-ft
  • Lowest combined fuel consumption
    9.9 L/100 km
    23.8 mpg US
    28.5 mpg UK
  • Lowest CO2 emissions
    227 g/km
  • Best estimated range
    667 km
    414 mi
  • Best overall score
    85/100
  • Best economy score
    80/100
  • Best practicality score
    73/100

Specification comparison

Specification comparison
ModelAlfa RomeoGiulia (952)GTA 2.9 V6Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V8
Power
540hp403kW
510hp380kW
Torque
600Nm443lb-ft
700Nm516lb-ft
Curb weight
1,605kg3,538lb
1,680kg3,704lb
Gross weight
2,150kg4,740lb
2,180kg4,806lb
Top speed
Unrestricted
315 km/h196 mph
Restricted
300 km/h186 mph
Calculated
Unrestricted
305 km/h190 mph
Restricted
290 km/h180 mph
Calculated
To 99% top speed
36.5s99% target: 312 km/h / 194 mph
Calculated
39.8s99% target: 302 km/h / 188 mph
Calculated
0-100 km/h
3.6s
4.0s
0-200 km/h
8.9s
Calculated
10.1s
Calculated
0-60 mph
3.5s
Calculated
3.8s
Calculated
Fuel consumption
11.7L/100 km20.1mpg US24.1mpg UK
9.9L/100 km23.8mpg US28.5mpg UK
Fuel consumption city-
13.5L/100 km17.4mpg US20.9mpg UK
Fuel consumption highway-
7.9L/100 km29.8mpg US35.8mpg UK
Quarter mile
11.0s
Calculated
11.5s
Calculated
Power-to-weight
336hp/t251kW/t153hp/1000 lb
Calculated
304hp/t226kW/t138hp/1000 lb
Calculated
Torque-to-weight
374Nm/t250lb-ft/ton
Calculated
417Nm/t279lb-ft/ton
Calculated
Estimated range
496km308mi
Calculated
667km414mi
Calculated
Displacement
2,891cc176cu in
3,982cc243cu in
Length
4,654mm183in
4,757mm187in
Width
1,923mm76in
1,839mm72in
Height
1,445mm57in
1,426mm56in
Wheelbase
2,820mm111in
2,840mm112in
Front track
1,580mm62in
1,609mm63in
Rear track
1,654mm65in
-
Ground clearance-
92mm4in
Trunk volume
480L
435L
Doors
4
4
Seats
4
5
Fuel tank
58L
66L
CO2 emissions
271g/km
227g/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.

Alfa Romeo Giulia (952) GTA 2.9 V6Mercedes-Benz C-class (W205) Facelift 2018 AMG C 63 S V8PowerTorque
  • Alfa Romeo Giulia (952) GTA 2.9 V6: Power / Torque
  • Mercedes-Benz C-class (W205) Facelift 2018 AMG C 63 S V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Alfa RomeoGiulia (952)GTA 2.9 V66,500 rpm2,500 rpm6,750 rpm
Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V85,500-6,250 rpm2,000-4,500 rpm6,500 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAlfa RomeoGiulia (952)GTA 2.9 V6Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V8
Acceleration checkpoints
0-60 mph
0-97 km/h
3.5 s
3.8 s
0-100 km/h
0-62 mph
3.6 s
4.0 s
0-200 km/h
0-124 mph
8.9 s
10.1 s
Top speed
Unrestricted
315 km/h196 mph
Restricted
300 km/h186 mph
Likely limited
Unrestricted
305 km/h190 mph
Restricted
290 km/h180 mph
Likely limited
Drag race simulation
60 ft
18 m
2.1 s
2.2 s
330 ft
101 m
5.1 s
5.4 s
1/8 mile
201 m
7.4 s
7.8 s
1000 ft
305 m
9.4 s
9.8 s
1/4 mile
402 m
11.0 s
11.5 s
Trap speed
1/4 mile
402 m
226 km/h
141 mph
216 km/h
134 mph

Power comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)GTA 2.9 V6
540 hp
403 kW
Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V8
510 hp
380 kW

Alfa Romeo Giulia (952) GTA 2.9 V6 has 30 hp more than Mercedes-Benz C-class (W205) Facelift 2018 AMG C 63 S V8.

The biggest power difference is between Mercedes-Benz C-class (W205) Facelift 2018 AMG C 63 S V8 and Alfa Romeo Giulia (952) GTA 2.9 V6: 30 hp (22 kW).

Torque comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)GTA 2.9 V6
600 Nm
443 lb-ft
Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V8
700 Nm
516 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)GTA 2.9 V6
1,605 kg
3,538 lb
Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V8
1,680 kg
3,704 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
Alfa RomeoGiulia (952)GTA 2.9 V6
Unrestricted
315 km/h196 mph
Restricted
300 km/h186 mph
Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V8
Unrestricted
305 km/h190 mph
Restricted
290 km/h180 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)GTA 2.9 V63.6 s
Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V84.0 s

The biggest 0-100 km/h difference is between Alfa Romeo Giulia (952) GTA 2.9 V6 and Mercedes-Benz C-class (W205) Facelift 2018 AMG C 63 S V8: 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
VehicleValue
Alfa RomeoGiulia (952)GTA 2.9 V6
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V8
9.9 L/100 km
23.8 mpg US
28.5 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz C-class (W205) Facelift 2018 AMG C 63 S V8 and Alfa Romeo Giulia (952) GTA 2.9 V6: 1.8 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
Alfa RomeoGiulia (952)GTA 2.9 V6
336 hp/t
251 kW/t
3.0 kg/hp
Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V8
304 hp/t
226 kW/t
3.3 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)GTA 2.9 V6
496 km
308 mi
Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V8
667 km
414 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Alfa RomeoGiulia (952)GTA 2.9 V6
540 hp
403 kW
3.6 s
Unrestricted
315 km/h196 mph
Restricted
300 km/h186 mph
Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V8
510 hp
380 kW
4.0 s
Unrestricted
305 km/h190 mph
Restricted
290 km/h180 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
Alfa RomeoGiulia (952)GTA 2.9 V6
Power
540 hp
403 kW
0-100 km/h3.6 s
Top speed
Unrestricted
315 km/h196 mph
Restricted
300 km/h186 mph
Doors/seats
4 doors
4 seats
Trunk
480 L
17.0 cu ft
Length
4,654 mm
183.2 in
Height
1,445 mm
56.9 in
Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V8
Power
510 hp
380 kW
0-100 km/h4.0 s
Top speed
Unrestricted
305 km/h190 mph
Restricted
290 km/h180 mph
Doors/seats
4 doors
5 seats
Trunk
435 L
15.4 cu ft
Length
4,757 mm
187.3 in
Height
1,426 mm
56.1 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
Alfa RomeoGiulia (952)GTA 2.9 V6
Power
540 hp
403 kW
0-100 km/h3.6 s
Top speed
Unrestricted
315 km/h196 mph
Restricted
300 km/h186 mph
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V8
Power
510 hp
380 kW
0-100 km/h4.0 s
Top speed
Unrestricted
305 km/h190 mph
Restricted
290 km/h180 mph
9.9 L/100 km
23.8 mpg US
28.5 mpg UK

Mercedes-Benz C-class (W205) Facelift 2018 AMG C 63 S V8 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
Alfa RomeoGiulia (952)GTA 2.9 V6
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
3.6 s
Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V8
9.9 L/100 km
23.8 mpg US
28.5 mpg UK
4.0 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
Alfa RomeoGiulia (952)GTA 2.9 V6
336 hp/t
251 kW/t
3.0 kg/hp
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V8
304 hp/t
226 kW/t
3.3 kg/hp
9.9 L/100 km
23.8 mpg US
28.5 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAlfa RomeoGiulia (952)GTA 2.9 V6Mercedes-BenzC-class (W205)Facelift 2018AMG C 63 S V8
Power
540 hp
403 kW
510 hp
380 kW
Torque
600 Nm
443 lb-ft
700 Nm
516 lb-ft
Acceleration
3.6 s
4.0 s
Top speed
Unrestricted
315 km/h196 mph
Restricted
300 km/h186 mph
Unrestricted
305 km/h190 mph
Restricted
290 km/h180 mph
Lightness
1,605 kg
3,538 lb
1,680 kg
3,704 lb
Fuel consumption
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
9.9 L/100 km
23.8 mpg US
28.5 mpg UK
Practicality
Doors/seats
4 doors
4 seats
Trunk
480 L
17.0 cu ft
Length
4,654 mm
183.2 in
Height
1,445 mm
56.9 in
Doors/seats
4 doors
5 seats
Trunk
435 L
15.4 cu ft
Length
4,757 mm
187.3 in
Height
1,426 mm
56.1 in
Range score
496 km
308 mi
667 km
414 mi
CO2 score
271 g/km
227 g/km
Trunk score
480 L
17.0 cu ft
435 L
15.4 cu ft
Power-to-weight score
336 hp/t
251 kW/t
3.0 kg/hp
304 hp/t
226 kW/t
3.3 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
VehicleAlfa Romeo Giulia (952) GTA 2.9 V6Mercedes-Benz C-class (W205) Facelift 2018 AMG C 63 S V8
Consumption11.7 L/100 km20.1 mpg US24.1 mpg UK9.9 L/100 km23.8 mpg US28.5 mpg UK
Cost / 100 km20.47 LC100 km17.33 LC100 km
Cost / 100 mi32.95 LC100 mi27.88 LC100 mi
Annual fuel used1,755 L464 US gal386 UK gal1,485 L392 US gal327 UK gal
Annual fuel cost3,071 LC/year2,599 LC/year

Head-to-head comparisons

Alfa Romeo Giulia (952) GTA 2.9 V6

  • Has 30 hp more
  • Is 75 kg lighter
  • Is 0.4 s quicker from 0-100 km/h
  • Has 10 km/h (6 mph) higher top speed
  • Has 33 hp/t better power-to-weight
  • Has 45 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Lightest
  • Best power-to-weight ratio
  • Largest trunk

Cons

  • Highest combined fuel consumption
  • Highest CO2 emissions

Mercedes-Benz C-class (W205) Facelift 2018 AMG C 63 S V8

  • Has 100 Nm more
  • Uses 1.8 L/100 km less fuel
  • Has 171 km (106 mi) more estimated range
  • Emits 44 g/km less CO2

Pros

  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Heaviest
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
Alfa Romeo Giulia (952) GTA 2.9 V6
Mercedes-Benz C-class (W205) AMG C 63 S V8
Compare selected cars
2 vehicles selected

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