Car comparison

Mercedes-Benz S-class Coupe (C217) · Facelift 2017 S 450vsMercedes-Benz S-class Coupe (C217) S 400

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

New comparison

Mercedes-Benz S-class Coupe (C217) · Facelift 2017

S 450

367 hp2996 ccGasolineAWDAutomaticTwin-turboCoupe2017-2020
VS

Mercedes-Benz S-class Coupe (C217)

S 400

367 hp2996 ccGasolineAWDAutomaticTwin-turboCoupe2015-2017

Comparison overview

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

Best choices

Mercedes-Benz S-class Coupe (C217) Facelift 2017 S 450

  • Quickest 0-100 km/h
    5.5 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    367 hp
    274 kW
  • Highest torque
    500 Nm
    369 lb-ft
  • Lowest highway consumption
    7.2 L/100 km
    32.7 mpg US
    39.2 mpg UK
  • Lowest CO2 emissions
    208 g/km
  • Largest trunk
    400 L
  • Best overall score
    64/100
  • Best performance score
    70/100
  • Best practicality score
    52/100

Mercedes-Benz S-class Coupe (C217) S 400

  • Lightest
    1,960 kg
    4,321 lb
  • Best power-to-weight
    187 hp/t
    140 kW/t
    5.3 kg/hp
  • Lowest combined fuel consumption
    8.9 L/100 km
    26.4 mpg US
    31.7 mpg UK
  • Lowest city consumption
    11.7 L/100 km
    20.1 mpg US
    24.1 mpg UK
  • Best estimated range
    899 km
    559 mi
  • Best economy score
    83/100

Specification comparison

Specification comparison
ModelMercedes-BenzS-class Coupe (C217)Facelift 2017S 450Mercedes-BenzS-class Coupe (C217)S 400
Power
367hp274kW
367hp274kW
Torque
500Nm369lb-ft
500Nm369lb-ft
Curb weight
1,975kg4,354lb
1,960kg4,321lb
Gross weight
2,555kg5,633lb
2,540kg5,600lb
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
78.7s99% target: 262 km/h / 163 mph
Calculated
79.9s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
5.5s
5.6s
0-200 km/h
19.6s
Calculated
20.0s
Calculated
0-60 mph
5.2s
Calculated
5.3s
Calculated
Fuel consumption
9.2L/100 km25.6mpg US30.7mpg UK
8.9L/100 km26.4mpg US31.7mpg UK
Fuel consumption city
12.6L/100 km18.7mpg US22.4mpg UK
11.7L/100 km20.1mpg US24.1mpg UK
Fuel consumption highway
7.2L/100 km32.7mpg US39.2mpg UK
7.2L/100 km32.7mpg US39.2mpg UK
Quarter mile
13.6s
Calculated
13.7s
Calculated
Power-to-weight
186hp/t139kW/t84hp/1000 lb
Calculated
187hp/t140kW/t85hp/1000 lb
Calculated
Torque-to-weight
253Nm/t169lb-ft/ton
Calculated
255Nm/t171lb-ft/ton
Calculated
Estimated range
870km540mi
Calculated
899km559mi
Calculated
Displacement
2,996cc183cu in
2,996cc183cu in
Length
5,032mm198in
5,027mm198in
Width
1,899mm75in
1,899mm75in
Height
1,411mm56in
1,411mm56in
Wheelbase
2,945mm116in
2,945mm116in
Front track
1,625mm64in
1,625mm64in
Rear track
1,649mm65in
1,649mm65in
Trunk volume
400L
400L
Doors
2
2
Seats
4
4
Fuel tank
80L
80L
CO2 emissions
208g/km
208g/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 S-class Coupe (C217) Facelift 2017 S 450Mercedes-Benz S-class Coupe (C217) S 400PowerTorque
  • Mercedes-Benz S-class Coupe (C217) Facelift 2017 S 450: Power / Torque
  • Mercedes-Benz S-class Coupe (C217) S 400: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzS-class Coupe (C217)Facelift 2017S 4505,500-6,000 rpm1,600-4,000 rpm6,250 rpm
Mercedes-BenzS-class Coupe (C217)S 4005,500-6,000 rpm1,800-4,500 rpm6,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzS-class Coupe (C217)Facelift 2017S 450Mercedes-BenzS-class Coupe (C217)S 400
Acceleration checkpoints
0-60 mph
0-97 km/h
5.2 s
5.3 s
0-100 km/h
0-62 mph
5.5 s
5.6 s
0-200 km/h
0-124 mph
19.6 s
20.0 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
2.2 s
2.3 s
330 ft
101 m
5.9 s
6.0 s
1/8 mile
201 m
8.9 s
9.0 s
1000 ft
305 m
11.5 s
11.6 s
1/4 mile
402 m
13.6 s
13.7 s
Trap speed
1/4 mile
402 m
170 km/h
106 mph
169 km/h
105 mph

Power comparison

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

Chart data table
VehicleValue
Mercedes-BenzS-class Coupe (C217)Facelift 2017S 450
367 hp
274 kW
Mercedes-BenzS-class Coupe (C217)S 400
367 hp
274 kW

Torque comparison

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

Chart data table
VehicleValue
Mercedes-BenzS-class Coupe (C217)Facelift 2017S 450
500 Nm
369 lb-ft
Mercedes-BenzS-class Coupe (C217)S 400
500 Nm
369 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzS-class Coupe (C217)Facelift 2017S 450
1,975 kg
4,354 lb
Mercedes-BenzS-class Coupe (C217)S 400
1,960 kg
4,321 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-BenzS-class Coupe (C217)Facelift 2017S 450
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Mercedes-BenzS-class Coupe (C217)S 400
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-BenzS-class Coupe (C217)Facelift 2017S 4505.5 s
Mercedes-BenzS-class Coupe (C217)S 4005.6 s

The biggest 0-100 km/h difference is between Mercedes-Benz S-class Coupe (C217) Facelift 2017 S 450 and Mercedes-Benz S-class Coupe (C217) S 400: 0.1 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-BenzS-class Coupe (C217)Facelift 2017S 450
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
Mercedes-BenzS-class Coupe (C217)S 400
8.9 L/100 km
26.4 mpg US
31.7 mpg UK

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
VehicleValue
Mercedes-BenzS-class Coupe (C217)Facelift 2017S 450
186 hp/t
139 kW/t
5.4 kg/hp
Mercedes-BenzS-class Coupe (C217)S 400
187 hp/t
140 kW/t
5.3 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Mercedes-BenzS-class Coupe (C217)Facelift 2017S 450
870 km
540 mi
Mercedes-BenzS-class Coupe (C217)S 400
899 km
559 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Mercedes-BenzS-class Coupe (C217)Facelift 2017S 450
367 hp
274 kW
5.5 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Mercedes-BenzS-class Coupe (C217)S 400
367 hp
274 kW
5.6 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-BenzS-class Coupe (C217)Facelift 2017S 450
Power
367 hp
274 kW
0-100 km/h5.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
400 L
14.1 cu ft
Length
5,032 mm
198.1 in
Height
1,411 mm
55.6 in
Mercedes-BenzS-class Coupe (C217)S 400
Power
367 hp
274 kW
0-100 km/h5.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
400 L
14.1 cu ft
Length
5,027 mm
197.9 in
Height
1,411 mm
55.6 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-BenzS-class Coupe (C217)Facelift 2017S 450
Power
367 hp
274 kW
0-100 km/h5.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
Mercedes-BenzS-class Coupe (C217)S 400
Power
367 hp
274 kW
0-100 km/h5.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
8.9 L/100 km
26.4 mpg US
31.7 mpg UK

Mercedes-Benz S-class Coupe (C217) S 400 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-BenzS-class Coupe (C217)Facelift 2017S 450
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
5.5 s
Mercedes-BenzS-class Coupe (C217)S 400
8.9 L/100 km
26.4 mpg US
31.7 mpg UK
5.6 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-BenzS-class Coupe (C217)Facelift 2017S 450
186 hp/t
139 kW/t
5.4 kg/hp
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
Mercedes-BenzS-class Coupe (C217)S 400
187 hp/t
140 kW/t
5.3 kg/hp
8.9 L/100 km
26.4 mpg US
31.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleMercedes-BenzS-class Coupe (C217)Facelift 2017S 450Mercedes-BenzS-class Coupe (C217)S 400
Power
367 hp
274 kW
367 hp
274 kW
Torque
500 Nm
369 lb-ft
500 Nm
369 lb-ft
Acceleration
5.5 s
5.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,975 kg
4,354 lb
1,960 kg
4,321 lb
Fuel consumption
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
8.9 L/100 km
26.4 mpg US
31.7 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
400 L
14.1 cu ft
Length
5,032 mm
198.1 in
Height
1,411 mm
55.6 in
Doors/seats
2 doors
4 seats
Trunk
400 L
14.1 cu ft
Length
5,027 mm
197.9 in
Height
1,411 mm
55.6 in
Range score
870 km
540 mi
899 km
559 mi
CO2 score
208 g/km
208 g/km
Trunk score
400 L
14.1 cu ft
400 L
14.1 cu ft
Power-to-weight score
186 hp/t
139 kW/t
5.4 kg/hp
187 hp/t
140 kW/t
5.3 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 S-class Coupe (C217) Facelift 2017 S 450Mercedes-Benz S-class Coupe (C217) S 400
Consumption9.2 L/100 km25.6 mpg US30.7 mpg UK8.9 L/100 km26.4 mpg US31.7 mpg UK
Cost / 100 km16.10 LC100 km15.58 LC100 km
Cost / 100 mi25.91 LC100 mi25.07 LC100 mi
Annual fuel used1,380 L365 US gal304 UK gal1,335 L353 US gal294 UK gal
Annual fuel cost2,415 LC/year2,336 LC/year

Head-to-head comparisons

Mercedes-Benz S-class Coupe (C217) S 400

  • Is 15 kg lighter
  • Uses 0.3 L/100 km less fuel
  • Has 1 hp/t better power-to-weight
  • Has 29 km (18 mi) more estimated range

Pros

  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range

Cons

  • Slowest 0-100 km/h

Choose cars to compare

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Model
Generation
Engine or modification
Mercedes-Benz S-class Coupe (C217) S 450
Mercedes-Benz S-class Coupe (C217) S 400
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