Car comparison

Mercedes-Benz C-class (W205) · Facelift 2018 C 400 V6vsMercedes-Benz C-class (W206) C 300d

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

New comparison

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

C 400 V6

333 hp2996 ccGasolineAWDAutomaticTwin-turboSedan2018-2021
VS

Mercedes-Benz C-class (W206)

C 300d

265 hp1992 ccDieselRWDAutomaticTwin-turboSedan2021-present

Comparison overview

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

Best choices

Mercedes-Benz C-class (W205) Facelift 2018 C 400 V6

  • Quickest 0-100 km/h
    4.9 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    333 hp
    248 kW
  • Lightest
    1,480 kg
    3,263 lb
  • Best power-to-weight
    225 hp/t
    168 kW/t
    4.4 kg/hp
  • Best overall score
    74/100
  • Best performance score
    72/100
  • Best practicality score
    77/100

Mercedes-Benz C-class (W206) C 300d

  • Highest torque
    550 Nm
    406 lb-ft
  • Lowest combined fuel consumption
    5.3 L/100 km
    44.4 mpg US
    53.3 mpg UK
  • Lowest city consumption
    7.1 L/100 km
    33.1 mpg US
    39.8 mpg UK
  • Lowest highway consumption
    4.2 L/100 km
    56.0 mpg US
    67.3 mpg UK
  • Best estimated range
    943 km
    586 mi
  • Best economy score
    93/100

Specification comparison

Specification comparison
ModelMercedes-BenzC-class (W205)Facelift 2018C 400 V6Mercedes-BenzC-class (W206)C 300d
Power
333hp248kW
265hp198kW
Torque
480Nm354lb-ft
550Nm406lb-ft
Curb weight
1,480kg3,263lb
1,700kg3,748lb
Gross weight
2,135kg4,707lb
2,380kg5,247lb
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
45.1s99% target: 262 km/h / 163 mph
Calculated
57.0s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
4.9s
5.7s
0-200 km/h
14.2s
Calculated
17.1s
Calculated
0-60 mph
4.7s
Calculated
5.5s
Calculated
Fuel consumption
8.2L/100 km28.7mpg US34.4mpg UK
5.3L/100 km44.4mpg US53.3mpg UK
Fuel consumption city
11.2L/100 km21mpg US25.2mpg UK
7.1L/100 km33.1mpg US39.8mpg UK
Fuel consumption highway
6.4L/100 km36.8mpg US44.1mpg UK
4.2L/100 km56mpg US67.3mpg UK
Quarter mile
12.8s
Calculated
13.6s
Calculated
Power-to-weight
225hp/t168kW/t102hp/1000 lb
Calculated
156hp/t116kW/t71hp/1000 lb
Calculated
Torque-to-weight
324Nm/t217lb-ft/ton
Calculated
324Nm/t216lb-ft/ton
Calculated
Estimated range
805km500mi
Calculated
943km586mi
Calculated
Displacement
2,996cc183cu in
1,992cc122cu in
Length
4,686mm184in
4,751mm187in
Width
1,810mm71in
1,820mm72in
Height
1,442mm57in
1,437mm57in
Wheelbase
2,840mm112in
2,865mm113in
Front track
1,588mm63in
1,601mm63in
Rear track-
1,613mm64in
Ground clearance
92mm4in
-
Trunk volume-
455L
Doors
4
4
Seats
5
5
Fuel tank
66L
50L
CO2 emissions
187g/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 (W205) Facelift 2018 C 400 V6Mercedes-Benz C-class (W206) C 300dPowerTorque
  • Mercedes-Benz C-class (W205) Facelift 2018 C 400 V6: Power / Torque
  • Mercedes-Benz C-class (W206) C 300d: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzC-class (W205)Facelift 2018C 400 V6-1,600-4,000 rpm4,250 rpm
Mercedes-BenzC-class (W206)C 300d4,200 rpm1,800-2,200 rpm4,450 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzC-class (W205)Facelift 2018C 400 V6Mercedes-BenzC-class (W206)C 300d
Acceleration checkpoints
0-60 mph
0-97 km/h
4.7 s
5.5 s
0-100 km/h
0-62 mph
4.9 s
5.7 s
0-200 km/h
0-124 mph
14.2 s
17.1 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
Limited
Drag race simulation
60 ft
18 m
2.4 s
2.5 s
330 ft
101 m
5.8 s
6.2 s
1/8 mile
201 m
8.5 s
9.1 s
1000 ft
305 m
10.9 s
11.6 s
1/4 mile
402 m
12.8 s
13.6 s
Trap speed
1/4 mile
402 m
190 km/h
118 mph
179 km/h
111 mph

Power comparison

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

Chart data table
VehicleValue
Mercedes-BenzC-class (W205)Facelift 2018C 400 V6
333 hp
248 kW
Mercedes-BenzC-class (W206)C 300d
265 hp
198 kW

Mercedes-Benz C-class (W205) Facelift 2018 C 400 V6 has 68 hp more than Mercedes-Benz C-class (W206) C 300d.

The biggest power difference is between Mercedes-Benz C-class (W206) C 300d and Mercedes-Benz C-class (W205) Facelift 2018 C 400 V6: 68 hp (51 kW).

Torque comparison

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

Chart data table
VehicleValue
Mercedes-BenzC-class (W205)Facelift 2018C 400 V6
480 Nm
354 lb-ft
Mercedes-BenzC-class (W206)C 300d
550 Nm
406 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzC-class (W205)Facelift 2018C 400 V6
1,480 kg
3,263 lb
Mercedes-BenzC-class (W206)C 300d
1,700 kg
3,748 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 (W205)Facelift 2018C 400 V6
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Mercedes-BenzC-class (W206)C 300d
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-BenzC-class (W205)Facelift 2018C 400 V64.9 s
Mercedes-BenzC-class (W206)C 300d5.7 s

The biggest 0-100 km/h difference is between Mercedes-Benz C-class (W205) Facelift 2018 C 400 V6 and Mercedes-Benz C-class (W206) C 300d: 0.8 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 (W205)Facelift 2018C 400 V6
8.2 L/100 km
28.7 mpg US
34.4 mpg UK
Mercedes-BenzC-class (W206)C 300d
5.3 L/100 km
44.4 mpg US
53.3 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz C-class (W206) C 300d and Mercedes-Benz C-class (W205) Facelift 2018 C 400 V6: 2.9 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 (W205)Facelift 2018C 400 V6
225 hp/t
168 kW/t
4.4 kg/hp
Mercedes-BenzC-class (W206)C 300d
156 hp/t
116 kW/t
6.4 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Mercedes-BenzC-class (W205)Facelift 2018C 400 V6
805 km
500 mi
Mercedes-BenzC-class (W206)C 300d
943 km
586 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Mercedes-BenzC-class (W205)Facelift 2018C 400 V6
333 hp
248 kW
4.9 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Mercedes-BenzC-class (W206)C 300d
265 hp
198 kW
5.7 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-BenzC-class (W205)Facelift 2018C 400 V6
Power
333 hp
248 kW
0-100 km/h4.9 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk-
Length
4,686 mm
184.5 in
Height
1,442 mm
56.8 in
Mercedes-BenzC-class (W206)C 300d
Power
265 hp
198 kW
0-100 km/h5.7 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk
455 L
16.1 cu ft
Length
4,751 mm
187.0 in
Height
1,437 mm
56.6 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 (W205)Facelift 2018C 400 V6
Power
333 hp
248 kW
0-100 km/h4.9 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
8.2 L/100 km
28.7 mpg US
34.4 mpg UK
Mercedes-BenzC-class (W206)C 300d
Power
265 hp
198 kW
0-100 km/h5.7 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
5.3 L/100 km
44.4 mpg US
53.3 mpg UK

Mercedes-Benz C-class (W205) Facelift 2018 C 400 V6 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 (W205)Facelift 2018C 400 V6
8.2 L/100 km
28.7 mpg US
34.4 mpg UK
4.9 s
Mercedes-BenzC-class (W206)C 300d
5.3 L/100 km
44.4 mpg US
53.3 mpg UK
5.7 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-BenzC-class (W205)Facelift 2018C 400 V6
225 hp/t
168 kW/t
4.4 kg/hp
8.2 L/100 km
28.7 mpg US
34.4 mpg UK
Mercedes-BenzC-class (W206)C 300d
156 hp/t
116 kW/t
6.4 kg/hp
5.3 L/100 km
44.4 mpg US
53.3 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleMercedes-BenzC-class (W205)Facelift 2018C 400 V6Mercedes-BenzC-class (W206)C 300d
Power
333 hp
248 kW
265 hp
198 kW
Torque
480 Nm
354 lb-ft
550 Nm
406 lb-ft
Acceleration
4.9 s
5.7 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,480 kg
3,263 lb
1,700 kg
3,748 lb
Fuel consumption
8.2 L/100 km
28.7 mpg US
34.4 mpg UK
5.3 L/100 km
44.4 mpg US
53.3 mpg UK
Practicality
Doors/seats
4 doors
5 seats
Trunk-
Length
4,686 mm
184.5 in
Height
1,442 mm
56.8 in
Doors/seats
4 doors
5 seats
Trunk
455 L
16.1 cu ft
Length
4,751 mm
187.0 in
Height
1,437 mm
56.6 in
Range score
805 km
500 mi
943 km
586 mi
CO2 score
187 g/km
-
Trunk score
-
455 L
16.1 cu ft
Power-to-weight score
225 hp/t
168 kW/t
4.4 kg/hp
156 hp/t
116 kW/t
6.4 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 (W205) Facelift 2018 C 400 V6Mercedes-Benz C-class (W206) C 300d
Consumption8.2 L/100 km28.7 mpg US34.4 mpg UK5.3 L/100 km44.4 mpg US53.3 mpg UK
Cost / 100 km14.35 LC100 km9.28 LC100 km
Cost / 100 mi23.09 LC100 mi14.93 LC100 mi
Annual fuel used1,230 L325 US gal271 UK gal795 L210 US gal175 UK gal
Annual fuel cost2,153 LC/year1,391 LC/year

Head-to-head comparisons

Mercedes-Benz C-class (W205) Facelift 2018 C 400 V6

  • Has 68 hp more
  • Is 220 kg lighter
  • Is 0.8 s quicker from 0-100 km/h
  • Has 69 hp/t better power-to-weight

Pros

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

Cons

  • Highest combined fuel consumption

Mercedes-Benz C-class (W206) C 300d

  • Has 70 Nm more
  • Uses 2.9 L/100 km less fuel
  • Has 139 km (86 mi) more estimated range

Pros

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

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Heaviest

Choose cars to compare

Brand
Model
Generation
Engine or modification
Mercedes-Benz C-class (W205) C 400 V6
Mercedes-Benz C-class (W206) C 300d
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