Car comparison

Mercedes-Benz S-class Cabriolet (A217) · Facelift 2017 AMG S 63vsRolls-Royce Dawn 6.6 V12

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

New comparison

Mercedes-Benz S-class Cabriolet (A217) · Facelift 2017

AMG S 63

612 hp3982 ccGasolineAWDAutomaticTwin-turboCabriolet / convertible2017-2020

Rolls-Royce Dawn

6.6 V12

601 hp6592 ccGasolineRWDAutomaticTwin-turboCabriolet / convertible2017-present

Comparison overview

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

Mercedes-Benz S-class Cabriolet (A217) Facelift 2017 AMG S 63

Quickest 0-100 km/h
3.5 s
Fastest top speed
260 km/h
162 mph Unrestricted
250 km/h
155 mph Restricted
Most powerful
612 hp
456 kW
Highest torque
900 Nm
664 lb-ft
Lightest
2,110 kg
4,652 lb
Best power-to-weight
290 hp/t
216 kW/t
3.4 kg/hp
Lowest combined fuel consumption
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
Lowest city consumption
13.6 L/100 km
17.3 mpg US
20.8 mpg UK
Lowest highway consumption
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
Lowest CO2 emissions
229 g/km
Best overall score
73/100
Best performance score
85/100
Best economy score
80/100

Rolls-Royce Dawn 6.6 V12

Best practicality score
47/100

Specification comparison

Specification comparison
Model	Mercedes-BenzS-class Cabriolet (A217)Facelift 2017AMG S 63	Rolls-RoyceDawn6.6 V12
Power	612hp456kW	601hp448kW
Torque	900Nm664lb-ft	840Nm620lb-ft
Curb weight	2,110kg4,652lb	2,560kg5,644lb
Gross weight	2,635kg5,809lb	-
Top speed	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Calculated	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Calculated
To 99% top speed	43.6s99% target: 257 km/h / 160 mph Calculated	73.9s99% target: 257 km/h / 160 mph Calculated
0-100 km/h	3.5s	4.9s
0-200 km/h	12.1s Calculated	18.6s Calculated
0-60 mph	3.3s Calculated	4.6s Calculated
Fuel consumption	10.1L/100 km23.3mpg US28.0mpg UK	14.7L/100 km16mpg US19.2mpg UK
Fuel consumption city	13.6L/100 km17.3mpg US20.8mpg UK	22.9L/100 km10.3mpg US12.3mpg UK
Fuel consumption highway	8L/100 km29.4mpg US35.3mpg UK	10.1L/100 km23.3mpg US28.0mpg UK
Quarter mile	11.5s Calculated	13.1s Calculated
Power-to-weight	290hp/t216kW/t132hp/1000 lb Calculated	235hp/t175kW/t106hp/1000 lb Calculated
Torque-to-weight	427Nm/t285lb-ft/ton Calculated	328Nm/t220lb-ft/ton Calculated
Estimated range	792km492mi Calculated	-
Displacement	3,982cc243cu in	6,592cc402cu in
Length	5,051mm199in	5,285mm208in
Width	-	1,947mm77in
Height	-	1,502mm59in
Wheelbase	2,945mm116in	3,112mm123in
Front track	1,660mm65in	1,618mm64in
Rear track	1,645mm65in	1,665mm66in
Trunk volume	-	321L
Doors	2	2
Seats	4	4
Fuel tank	80L	-
CO2 emissions	229g/km	337g/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 Cabriolet (A217) Facelift 2017 AMG S 63Rolls-Royce Dawn 6.6 V12PowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
Mercedes-BenzS-class Cabriolet (A217)Facelift 2017AMG S 63	5,500-6,000 rpm	2,750-4,500 rpm	6,250 rpm
Rolls-RoyceDawn6.6 V12	5,250-6,000 rpm	1,650-4,750 rpm	6,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	Mercedes-BenzS-class Cabriolet (A217)Facelift 2017AMG S 63	Rolls-RoyceDawn6.6 V12
	Acceleration checkpoints
0-60 mph 0-97 km/h	3.3 s	4.6 s
0-100 km/h 0-62 mph	3.5 s	4.9 s
0-200 km/h 0-124 mph	12.1 s	18.6 s
Top speed	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Likely limited	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Likely limited
	Drag race simulation
60 ft 18 m	1.9 s	2.1 s
330 ft 101 m	4.9 s	5.6 s
1/8 mile 201 m	7.5 s	8.5 s
1000 ft 305 m	9.6 s	11.0 s
1/4 mile 402 m	11.5 s	13.1 s
Trap speed 1/4 mile 402 m	196 km/h 122 mph	173 km/h 108 mph

Power comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzS-class Cabriolet (A217)Facelift 2017AMG S 63	612 hp 456 kW
Rolls-RoyceDawn6.6 V12	601 hp 448 kW

Mercedes-Benz S-class Cabriolet (A217) Facelift 2017 AMG S 63 has 11 hp more than Rolls-Royce Dawn 6.6 V12.

The biggest power difference is between Rolls-Royce Dawn 6.6 V12 and Mercedes-Benz S-class Cabriolet (A217) Facelift 2017 AMG S 63: 11 hp (8 kW).

Torque comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzS-class Cabriolet (A217)Facelift 2017AMG S 63	900 Nm 664 lb-ft
Rolls-RoyceDawn6.6 V12	840 Nm 620 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzS-class Cabriolet (A217)Facelift 2017AMG S 63	2,110 kg 4,652 lb
Rolls-RoyceDawn6.6 V12	2,560 kg 5,644 lb

Top speed without limiter comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzS-class Cabriolet (A217)Facelift 2017AMG S 63	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
Rolls-RoyceDawn6.6 V12	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
Vehicle	Value
Mercedes-BenzS-class Cabriolet (A217)Facelift 2017AMG S 63	3.5 s
Rolls-RoyceDawn6.6 V12	4.9 s

The biggest 0-100 km/h difference is between Mercedes-Benz S-class Cabriolet (A217) Facelift 2017 AMG S 63 and Rolls-Royce Dawn 6.6 V12: 1.4 s.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
Vehicle	Value
Mercedes-BenzS-class Cabriolet (A217)Facelift 2017AMG S 63	10.1 L/100 km 23.3 mpg US 28.0 mpg UK
Rolls-RoyceDawn6.6 V12	14.7 L/100 km 16.0 mpg US 19.2 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz S-class Cabriolet (A217) Facelift 2017 AMG S 63 and Rolls-Royce Dawn 6.6 V12: 4.6 L/100 km.

Power-to-weight comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzS-class Cabriolet (A217)Facelift 2017AMG S 63	290 hp/t 216 kW/t 3.4 kg/hp
Rolls-RoyceDawn6.6 V12	235 hp/t 175 kW/t 4.3 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
Mercedes-BenzS-class Cabriolet (A217)Facelift 2017AMG S 63	612 hp 456 kW	3.5 s	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
Rolls-RoyceDawn6.6 V12	601 hp 448 kW	4.9 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.

Vehicle

Performance score

Practicality score

Mercedes-BenzS-class Cabriolet (A217)Facelift 2017AMG S 63

Power	612 hp 456 kW
0-100 km/h	3.5 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

Doors/seats	2 doors 4 seats
Trunk	-
Length	5,051 mm 198.9 in
Height	-

Rolls-RoyceDawn6.6 V12

Power	601 hp 448 kW
0-100 km/h	4.9 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

Doors/seats	2 doors 4 seats
Trunk	321 L 11.3 cu ft
Length	5,285 mm 208.1 in
Height	1,502 mm 59.1 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Vehicle

Performance score

Fuel economy score

Mercedes-BenzS-class Cabriolet (A217)Facelift 2017AMG S 63

Power	612 hp 456 kW
0-100 km/h	3.5 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

10.1 L/100 km

23.3 mpg US

28.0 mpg UK

Rolls-RoyceDawn6.6 V12

Power	601 hp 448 kW
0-100 km/h	4.9 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

14.7 L/100 km

16.0 mpg US

19.2 mpg UK

Mercedes-Benz S-class Cabriolet (A217) Facelift 2017 AMG S 63 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
Vehicle	Fuel consumption, L/100 km	0-100 km/h, s
Mercedes-BenzS-class Cabriolet (A217)Facelift 2017AMG S 63	10.1 L/100 km 23.3 mpg US 28.0 mpg UK	3.5 s
Rolls-RoyceDawn6.6 V12	14.7 L/100 km 16.0 mpg US 19.2 mpg UK	4.9 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
Vehicle	Power-to-weight, hp/t	Fuel consumption, L/100 km
Mercedes-BenzS-class Cabriolet (A217)Facelift 2017AMG S 63	290 hp/t 216 kW/t 3.4 kg/hp	10.1 L/100 km 23.3 mpg US 28.0 mpg UK
Rolls-RoyceDawn6.6 V12	235 hp/t 175 kW/t 4.3 kg/hp	14.7 L/100 km 16.0 mpg US 19.2 mpg UK

Detailed score breakdown

Vehicle

Mercedes-BenzS-class Cabriolet (A217)Facelift 2017AMG S 63

Rolls-RoyceDawn6.6 V12

Power

612 hp

456 kW

601 hp

448 kW

Torque

900 Nm

664 lb-ft

840 Nm

620 lb-ft

Acceleration

3.5 s

4.9 s

Top speed

Unrestricted

260 km/h162 mph

Restricted

250 km/h155 mph

Unrestricted

260 km/h162 mph

Restricted

250 km/h155 mph

Lightness

2,110 kg

4,652 lb

2,560 kg

5,644 lb

Fuel consumption

10.1 L/100 km

23.3 mpg US

28.0 mpg UK

14.7 L/100 km

16.0 mpg US

19.2 mpg UK

Practicality

Doors/seats	2 doors 4 seats
Trunk	-
Length	5,051 mm 198.9 in
Height	-

Doors/seats	2 doors 4 seats
Trunk	321 L 11.3 cu ft
Length	5,285 mm 208.1 in
Height	1,502 mm 59.1 in

Range score

792 km

492 mi

CO2 score

229 g/km

337 g/km

Trunk score

321 L

11.3 cu ft

Power-to-weight score

290 hp/t

216 kW/t

3.4 kg/hp

235 hp/t

175 kW/t

4.3 kg/hp

Overall

Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Average annual distanceDistance unitFuel price in your local currencyPrice unit

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
Vehicle	Mercedes-Benz S-class Cabriolet (A217) Facelift 2017 AMG S 63	Rolls-Royce Dawn 6.6 V12
Consumption	10.1 L/100 km23.3 mpg US28 mpg UK	14.7 L/100 km16 mpg US19.2 mpg UK
Cost / 100 km	17.68 LC100 km	25.72 LC100 km
Cost / 100 mi	28.45 LC100 mi	41.40 LC100 mi
Annual fuel used	1,515 L400 US gal333 UK gal	2,205 L582 US gal485 UK gal
Annual fuel cost	2,651 LC/year	3,859 LC/year