Car comparison

Mercedes-Benz C-class (W206) · Facelift 2026 C 300vsMercedes-Benz C-class (W205) · Facelift 2018 C 300d

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

New comparison

Mercedes-Benz C-class (W206) · Facelift 2026

C 300

258 hp1999 ccGasolineRWDAutomaticTurbochargedSedan2026-present
VS

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

C 300d

245 hp1950 ccDieselAWDAutomaticTurbochargedSedan2018-2021

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 300d

  • Quickest 0-100 km/h
    5.7 s
  • Highest torque
    500 Nm
    369 lb-ft
  • Lightest
    1,630 kg
    3,594 lb
  • Lowest combined fuel consumption
    5.7 L/100 km
    41.3 mpg US
    49.6 mpg UK
  • Best overall score
    69/100
  • Best performance score
    65/100
  • Best economy score
    91/100
  • Best practicality score
    77/100

Specification comparison

Specification comparison
ModelMercedes-BenzC-class (W206)Facelift 2026C 300Mercedes-BenzC-class (W205)Facelift 2018C 300d
Power
258hp192kW
245hp183kW
Torque
400Nm295lb-ft
500Nm369lb-ft
Curb weight
1,685kg3,715lb
1,630kg3,594lb
Gross weight
2,280kg5,027lb
2,285kg5,038lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
61.1s99% target: 262 km/h / 163 mph
Calculated
56.9s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
6.1s
5.7s
0-200 km/h
18.4s
Calculated
17.7s
Calculated
0-60 mph
5.8s
Calculated
5.4s
Calculated
Fuel consumption
7L/100 km33.6mpg US40.4mpg UK
5.7L/100 km41.3mpg US49.6mpg UK
Fuel consumption city-
6.8L/100 km34.6mpg US41.5mpg UK
Fuel consumption highway-
5.1L/100 km46.1mpg US55.4mpg UK
Quarter mile
14.0s
Calculated
13.7s
Calculated
Power-to-weight
153hp/t114kW/t69hp/1000 lb
Calculated
150hp/t112kW/t68hp/1000 lb
Calculated
Torque-to-weight
237Nm/t159lb-ft/ton
Calculated
307Nm/t205lb-ft/ton
Calculated
Estimated range
943km586mi
Calculated
719km447mi
Calculated
Displacement
1,999cc122cu in
1,950cc119cu in
Length
4,766mm188in
4,686mm184in
Width
1,820mm72in
1,810mm71in
Height
1,438mm57in
1,442mm57in
Wheelbase
2,865mm113in
2,840mm112in
Front track
1,582mm62in
1,588mm63in
Rear track
1,594mm63in
-
Ground clearance-
92mm4in
Trunk volume
455L
-
Doors
4
4
Seats
5
5
Fuel tank
66L
41L
CO2 emissions-
151g/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 (W206) Facelift 2026 C 300Mercedes-Benz C-class (W205) Facelift 2018 C 300dPowerTorque
  • Mercedes-Benz C-class (W206) Facelift 2026 C 300: Power / Torque
  • Mercedes-Benz C-class (W205) Facelift 2018 C 300d: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzC-class (W206)Facelift 2026C 3005,800 rpm2,000-3,200 rpm6,050 rpm
Mercedes-BenzC-class (W205)Facelift 2018C 300d-1,600-2,400 rpm2,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzC-class (W206)Facelift 2026C 300Mercedes-BenzC-class (W205)Facelift 2018C 300d
Acceleration checkpoints
0-60 mph
0-97 km/h
5.8 s
5.4 s
0-100 km/h
0-62 mph
6.1 s
5.7 s
0-200 km/h
0-124 mph
18.4 s
17.7 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.6 s
2.5 s
330 ft
101 m
6.4 s
6.2 s
1/8 mile
201 m
9.4 s
9.1 s
1000 ft
305 m
11.9 s
11.6 s
1/4 mile
402 m
14.0 s
13.7 s
Trap speed
1/4 mile
402 m
175 km/h
109 mph
177 km/h
110 mph

Power comparison

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

Chart data table
VehicleValue
Mercedes-BenzC-class (W206)Facelift 2026C 300
258 hp
192 kW
Mercedes-BenzC-class (W205)Facelift 2018C 300d
245 hp
183 kW

Mercedes-Benz C-class (W206) Facelift 2026 C 300 has 13 hp more than Mercedes-Benz C-class (W205) Facelift 2018 C 300d.

The biggest power difference is between Mercedes-Benz C-class (W205) Facelift 2018 C 300d and Mercedes-Benz C-class (W206) Facelift 2026 C 300: 13 hp (10 kW).

Torque comparison

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

Chart data table
VehicleValue
Mercedes-BenzC-class (W206)Facelift 2026C 300
400 Nm
295 lb-ft
Mercedes-BenzC-class (W205)Facelift 2018C 300d
500 Nm
369 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzC-class (W206)Facelift 2026C 300
1,685 kg
3,715 lb
Mercedes-BenzC-class (W205)Facelift 2018C 300d
1,630 kg
3,594 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 (W206)Facelift 2026C 300
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Mercedes-BenzC-class (W205)Facelift 2018C 300d
Unrestricted
260 km/h162 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 (W206)Facelift 2026C 3006.1 s
Mercedes-BenzC-class (W205)Facelift 2018C 300d5.7 s

Although Mercedes-Benz C-class (W206) Facelift 2026 C 300 has more power, Mercedes-Benz C-class (W205) Facelift 2018 C 300d is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Mercedes-Benz C-class (W205) Facelift 2018 C 300d and Mercedes-Benz C-class (W206) Facelift 2026 C 300: 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
Mercedes-BenzC-class (W206)Facelift 2026C 300
7.0 L/100 km
33.6 mpg US
40.4 mpg UK
Mercedes-BenzC-class (W205)Facelift 2018C 300d
5.7 L/100 km
41.3 mpg US
49.6 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz C-class (W205) Facelift 2018 C 300d and Mercedes-Benz C-class (W206) Facelift 2026 C 300: 1.3 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 (W206)Facelift 2026C 300
153 hp/t
114 kW/t
6.5 kg/hp
Mercedes-BenzC-class (W205)Facelift 2018C 300d
150 hp/t
112 kW/t
6.7 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Mercedes-BenzC-class (W206)Facelift 2026C 300
943 km
586 mi
Mercedes-BenzC-class (W205)Facelift 2018C 300d
719 km
447 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Mercedes-BenzC-class (W206)Facelift 2026C 300
258 hp
192 kW
6.1 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Mercedes-BenzC-class (W205)Facelift 2018C 300d
245 hp
183 kW
5.7 s
Unrestricted
260 km/h162 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 (W206)Facelift 2026C 300
Power
258 hp
192 kW
0-100 km/h6.1 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
4,766 mm
187.6 in
Height
1,438 mm
56.6 in
Mercedes-BenzC-class (W205)Facelift 2018C 300d
Power
245 hp
183 kW
0-100 km/h5.7 s
Top speed
Unrestricted
260 km/h162 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

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 (W206)Facelift 2026C 300
Power
258 hp
192 kW
0-100 km/h6.1 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
7.0 L/100 km
33.6 mpg US
40.4 mpg UK
Mercedes-BenzC-class (W205)Facelift 2018C 300d
Power
245 hp
183 kW
0-100 km/h5.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
5.7 L/100 km
41.3 mpg US
49.6 mpg UK

Mercedes-Benz C-class (W205) Facelift 2018 C 300d 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 (W206)Facelift 2026C 300
7.0 L/100 km
33.6 mpg US
40.4 mpg UK
6.1 s
Mercedes-BenzC-class (W205)Facelift 2018C 300d
5.7 L/100 km
41.3 mpg US
49.6 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 (W206)Facelift 2026C 300
153 hp/t
114 kW/t
6.5 kg/hp
7.0 L/100 km
33.6 mpg US
40.4 mpg UK
Mercedes-BenzC-class (W205)Facelift 2018C 300d
150 hp/t
112 kW/t
6.7 kg/hp
5.7 L/100 km
41.3 mpg US
49.6 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleMercedes-BenzC-class (W206)Facelift 2026C 300Mercedes-BenzC-class (W205)Facelift 2018C 300d
Power
258 hp
192 kW
245 hp
183 kW
Torque
400 Nm
295 lb-ft
500 Nm
369 lb-ft
Acceleration
6.1 s
5.7 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,685 kg
3,715 lb
1,630 kg
3,594 lb
Fuel consumption
7.0 L/100 km
33.6 mpg US
40.4 mpg UK
5.7 L/100 km
41.3 mpg US
49.6 mpg UK
Practicality
Doors/seats
4 doors
5 seats
Trunk
455 L
16.1 cu ft
Length
4,766 mm
187.6 in
Height
1,438 mm
56.6 in
Doors/seats
4 doors
5 seats
Trunk-
Length
4,686 mm
184.5 in
Height
1,442 mm
56.8 in
Range score
943 km
586 mi
719 km
447 mi
CO2 score
-
151 g/km
Trunk score
455 L
16.1 cu ft
-
Power-to-weight score
153 hp/t
114 kW/t
6.5 kg/hp
150 hp/t
112 kW/t
6.7 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 (W206) Facelift 2026 C 300Mercedes-Benz C-class (W205) Facelift 2018 C 300d
Consumption7 L/100 km33.6 mpg US40.4 mpg UK5.7 L/100 km41.3 mpg US49.6 mpg UK
Cost / 100 km12.25 LC100 km9.98 LC100 km
Cost / 100 mi19.71 LC100 mi16.05 LC100 mi
Annual fuel used1,050 L277 US gal231 UK gal855 L226 US gal188 UK gal
Annual fuel cost1,838 LC/year1,496 LC/year

Head-to-head comparisons

Mercedes-Benz C-class (W206) Facelift 2026 C 300

  • Has 13 hp more
  • Has 5 km/h (3 mph) higher top speed
  • Has 3 hp/t better power-to-weight
  • Has 224 km (139 mi) more estimated range

Pros

  • Highest top speed
  • Most powerful
  • Best power-to-weight ratio
  • Best estimated range

Cons

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

Mercedes-Benz C-class (W205) Facelift 2018 C 300d

  • Has 100 Nm more
  • Is 55 kg lighter
  • Is 0.4 s quicker from 0-100 km/h
  • Uses 1.3 L/100 km less fuel

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest torque
  • Lightest
  • Lowest combined fuel consumption

Cons

  • Lowest power
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Mercedes-Benz C-class (W206) C 300
Mercedes-Benz C-class (W205) C 300d
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Mercedes-Benz C-class (W206) · Facelift 2026 C 300 vs Mercedes-Benz C-class (W205) · Facelift 2018 C 300d - car comparison - FastVsFaster