Car comparison

Maserati GranCabrio I 4.7 V8vsRolls-Royce Phantom Drophead Coupe 6.75 i V12

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

New comparison

Maserati GranCabrio I

4.7 V8

450 hp4691 ccGasolineRWDAutomaticNaturally aspiratedCabriolet / convertible2011-2012

Rolls-Royce Phantom Drophead Coupe

6.75 i V12

460 hp6749 ccGasolineRWDAutomaticNaturally aspiratedCabriolet / convertible2007-2016

Comparison overview

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

Maserati GranCabrio I 4.7 V8

Quickest 0-100 km/h
5.2 s
Fastest top speed
285 km/h
177 mph
Lightest
1,980 kg
4,365 lb
Best power-to-weight
227 hp/t
169 kW/t
4.4 kg/hp
Lowest combined fuel consumption
14.5 L/100 km
16.2 mpg US
19.5 mpg UK
Lowest city consumption
22.5 L/100 km
10.5 mpg US
12.6 mpg UK
Lowest highway consumption
9.8 L/100 km
24.0 mpg US
28.8 mpg UK
Best estimated range
517 km
321 mi
Best performance score
76/100
Best economy score
68/100

Rolls-Royce Phantom Drophead Coupe 6.75 i V12

Most powerful
460 hp
343 kW
Highest torque
720 Nm
531 lb-ft
Largest trunk
315 L
Best overall score
67/100
Best practicality score
53/100

Specification comparison

Specification comparison
Model	MaseratiGranCabrio I4.7 V8	Rolls-RoycePhantom Drophead Coupe6.75 i V12
Power	450hp336kW	460hp343kW
Torque	510Nm376lb-ft	720Nm531lb-ft
Curb weight	1,980kg4,365lb	2,620kg5,776lb
Gross weight	2,350kg5,181lb	3,050kg6,724lb
Top speed	285 km/h 177 mph	Unrestricted 250 km/h155 mph Restricted 240 km/h149 mph Calculated
To 99% top speed	80.9s99% target: 282 km/h / 175 mph Calculated	97.9s99% target: 248 km/h / 154 mph Calculated
0-100 km/h	5.2s	5.9s
0-200 km/h	17.2s Calculated	25.6s Calculated
0-60 mph	4.9s Calculated	5.6s Calculated
Fuel consumption	14.5L/100 km16.2mpg US19.5mpg UK	15.9L/100 km14.8mpg US17.8mpg UK
Fuel consumption city	22.5L/100 km10.5mpg US12.6mpg UK	24.6L/100 km9.6mpg US11.5mpg UK
Fuel consumption highway	9.8L/100 km24mpg US28.8mpg UK	11L/100 km21.4mpg US25.7mpg UK
Quarter mile	13.3s Calculated	14.1s Calculated
Power-to-weight	227hp/t169kW/t103hp/1000 lb Calculated	176hp/t131kW/t80hp/1000 lb Calculated
Torque-to-weight	258Nm/t172lb-ft/ton Calculated	275Nm/t184lb-ft/ton Calculated
Estimated range	517km321mi Calculated	503km313mi Calculated
Displacement	4,691cc286cu in	6,749cc412cu in
Length	4,881mm192in	5,609mm221in
Width	1,915mm75in	1,987mm78in
Height	1,353mm53in	1,581mm62in
Wheelbase	2,942mm116in	3,320mm131in
Front track	1,586mm62in	1,685mm66in
Rear track	1,590mm63in	1,670mm66in
Trunk volume	173L	315L
Doors	2	2
Seats	4	5
Fuel tank	75L	80L
CO2 emissions	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.

Maserati GranCabrio I 4.7 V8Rolls-Royce Phantom Drophead Coupe 6.75 i V12PowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
MaseratiGranCabrio I4.7 V8	7,000 rpm	4,750 rpm	7,250 rpm
Rolls-RoycePhantom Drophead Coupe6.75 i V12	5,350 rpm	3,500 rpm	5,600 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	MaseratiGranCabrio I4.7 V8	Rolls-RoycePhantom Drophead Coupe6.75 i V12
	Acceleration checkpoints
0-60 mph 0-97 km/h	4.9 s	5.6 s
0-100 km/h 0-62 mph	5.2 s	5.9 s
0-200 km/h 0-124 mph	17.2 s	25.6 s
Top speed	285 km/h 177 mph	Unrestricted 250 km/h155 mph Restricted 240 km/h149 mph Likely limited
	Drag race simulation
60 ft 18 m	2.2 s	2.2 s
330 ft 101 m	5.8 s	6.0 s
1/8 mile 201 m	8.7 s	9.1 s
1000 ft 305 m	11.2 s	11.8 s
1/4 mile 402 m	13.3 s	14.1 s
Trap speed 1/4 mile 402 m	177 km/h 110 mph	159 km/h 99 mph

Power comparison

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

Chart data table
Vehicle	Value
MaseratiGranCabrio I4.7 V8	450 hp 336 kW
Rolls-RoycePhantom Drophead Coupe6.75 i V12	460 hp 343 kW

Rolls-Royce Phantom Drophead Coupe 6.75 i V12 has 10 hp more than Maserati GranCabrio I 4.7 V8.

The biggest power difference is between Maserati GranCabrio I 4.7 V8 and Rolls-Royce Phantom Drophead Coupe 6.75 i V12: 10 hp (7 kW).

Torque comparison

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

Chart data table
Vehicle	Value
MaseratiGranCabrio I4.7 V8	510 Nm 376 lb-ft
Rolls-RoycePhantom Drophead Coupe6.75 i V12	720 Nm 531 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
MaseratiGranCabrio I4.7 V8	1,980 kg 4,365 lb
Rolls-RoycePhantom Drophead Coupe6.75 i V12	2,620 kg 5,776 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
MaseratiGranCabrio I4.7 V8	285 km/h 177 mph
Rolls-RoycePhantom Drophead Coupe6.75 i V12	Unrestricted 250 km/h155 mph Restricted 240 km/h149 mph

0-100 km/h comparison

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

Chart data table
Vehicle	Value
MaseratiGranCabrio I4.7 V8	5.2 s
Rolls-RoycePhantom Drophead Coupe6.75 i V12	5.9 s

Although Rolls-Royce Phantom Drophead Coupe 6.75 i V12 has more power, Maserati GranCabrio I 4.7 V8 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Maserati GranCabrio I 4.7 V8 and Rolls-Royce Phantom Drophead Coupe 6.75 i V12: 0.7 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
MaseratiGranCabrio I4.7 V8	14.5 L/100 km 16.2 mpg US 19.5 mpg UK
Rolls-RoycePhantom Drophead Coupe6.75 i V12	15.9 L/100 km 14.8 mpg US 17.8 mpg UK

The biggest fuel consumption difference is between Maserati GranCabrio I 4.7 V8 and Rolls-Royce Phantom Drophead Coupe 6.75 i V12: 1.4 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
MaseratiGranCabrio I4.7 V8	227 hp/t 169 kW/t 4.4 kg/hp
Rolls-RoycePhantom Drophead Coupe6.75 i V12	176 hp/t 131 kW/t 5.7 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
MaseratiGranCabrio I4.7 V8	517 km 321 mi
Rolls-RoycePhantom Drophead Coupe6.75 i V12	503 km 313 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
MaseratiGranCabrio I4.7 V8	450 hp 336 kW	5.2 s	285 km/h 177 mph
Rolls-RoycePhantom Drophead Coupe6.75 i V12	460 hp 343 kW	5.9 s	Unrestricted 250 km/h155 mph Restricted 240 km/h149 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

MaseratiGranCabrio I4.7 V8

Power	450 hp 336 kW
0-100 km/h	5.2 s
Top speed 285 km/h 177 mph

Doors/seats	2 doors 4 seats
Trunk	173 L 6.1 cu ft
Length	4,881 mm 192.2 in
Height	1,353 mm 53.3 in

Rolls-RoycePhantom Drophead Coupe6.75 i V12

Power	460 hp 343 kW
0-100 km/h	5.9 s
Top speed Unrestricted 250 km/h155 mph Restricted 240 km/h149 mph

Doors/seats	2 doors 5 seats
Trunk	315 L 11.1 cu ft
Length	5,609 mm 220.8 in
Height	1,581 mm 62.2 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

MaseratiGranCabrio I4.7 V8

Power	450 hp 336 kW
0-100 km/h	5.2 s
Top speed 285 km/h 177 mph

14.5 L/100 km

16.2 mpg US

19.5 mpg UK

Rolls-RoycePhantom Drophead Coupe6.75 i V12

Power	460 hp 343 kW
0-100 km/h	5.9 s
Top speed Unrestricted 250 km/h155 mph Restricted 240 km/h149 mph

15.9 L/100 km

14.8 mpg US

17.8 mpg UK

Maserati GranCabrio I 4.7 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
Vehicle	Fuel consumption, L/100 km	0-100 km/h, s
MaseratiGranCabrio I4.7 V8	14.5 L/100 km 16.2 mpg US 19.5 mpg UK	5.2 s
Rolls-RoycePhantom Drophead Coupe6.75 i V12	15.9 L/100 km 14.8 mpg US 17.8 mpg UK	5.9 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
MaseratiGranCabrio I4.7 V8	227 hp/t 169 kW/t 4.4 kg/hp	14.5 L/100 km 16.2 mpg US 19.5 mpg UK
Rolls-RoycePhantom Drophead Coupe6.75 i V12	176 hp/t 131 kW/t 5.7 kg/hp	15.9 L/100 km 14.8 mpg US 17.8 mpg UK

Detailed score breakdown

Vehicle

MaseratiGranCabrio I4.7 V8

Rolls-RoycePhantom Drophead Coupe6.75 i V12

Power

450 hp

336 kW

460 hp

343 kW

Torque

510 Nm

376 lb-ft

720 Nm

531 lb-ft

Acceleration

5.2 s

5.9 s

Top speed

285 km/h

177 mph

Unrestricted

250 km/h155 mph

Restricted

240 km/h149 mph

Lightness

1,980 kg

4,365 lb

2,620 kg

5,776 lb

Fuel consumption

14.5 L/100 km

16.2 mpg US

19.5 mpg UK

15.9 L/100 km

14.8 mpg US

17.8 mpg UK

Practicality

Doors/seats	2 doors 4 seats
Trunk	173 L 6.1 cu ft
Length	4,881 mm 192.2 in
Height	1,353 mm 53.3 in

Doors/seats	2 doors 5 seats
Trunk	315 L 11.1 cu ft
Length	5,609 mm 220.8 in
Height	1,581 mm 62.2 in

Range score

517 km

321 mi

503 km

313 mi

CO2 score

337 g/km

Trunk score

173 L

6.1 cu ft

315 L

11.1 cu ft

Power-to-weight score

227 hp/t

169 kW/t

4.4 kg/hp

176 hp/t

131 kW/t

5.7 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	Maserati GranCabrio I 4.7 V8	Rolls-Royce Phantom Drophead Coupe 6.75 i V12
Consumption	14.5 L/100 km16.2 mpg US19.5 mpg UK	15.9 L/100 km14.8 mpg US17.8 mpg UK
Cost / 100 km	25.38 LC100 km	27.83 LC100 km
Cost / 100 mi	40.84 LC100 mi	44.78 LC100 mi
Annual fuel used	2,175 L575 US gal478 UK gal	2,385 L630 US gal525 UK gal
Annual fuel cost	3,806 LC/year	4,174 LC/year