Car comparison

Jaguar XJ (X351) 5.0 V8 SuperchargedvsRolls-Royce Ghost I 6.6 V12 48V

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

New comparison

Jaguar XJ (X351)

5.0 V8 Supercharged

510 hp5000 ccGasolineRWDAutomaticSuperchargedSedan2009-2012

Rolls-Royce Ghost I

6.6 V12 48V

570 hp6600 ccGasolineAutomaticTurbochargedSedan2009-2014

Comparison overview

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

Jaguar XJ (X351) 5.0 V8 Supercharged

Quickest 0-100 km/h
4.9 s
Fastest top speed
265 km/h
165 mph Unrestricted
250 km/h
155 mph Restricted
Lightest
1,892 kg
4,171 lb
Best power-to-weight
270 hp/t
201 kW/t
3.7 kg/hp
Best economy score
74/100

Rolls-Royce Ghost I 6.6 V12 48V

Most powerful
570 hp
425 kW
Highest torque
780 Nm
575 lb-ft
Best overall score
81/100
Best performance score
81/100
Best practicality score
80/100

Specification comparison

Specification comparison
Model	JaguarXJ (X351)5.0 V8 Supercharged	Rolls-RoyceGhost I6.6 V12 48V
Power	510hp380kW	570hp425kW
Torque	625Nm461lb-ft	780Nm575lb-ft
Curb weight	1,892kg4,171lb	2,360kg5,203lb
Gross weight	2,365kg5,214lb	-
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	47.0s99% target: 262 km/h / 163 mph Calculated	53.2s99% target: 262 km/h / 163 mph Calculated
0-100 km/h	4.9s	4.9s
0-200 km/h	14.4s Calculated	15.3s Calculated
0-60 mph	4.7s Calculated	4.7s Calculated
Fuel consumption	12.1L/100 km19.4mpg US23.3mpg UK	-
Fuel consumption city	18.3L/100 km12.9mpg US15.4mpg UK	-
Fuel consumption highway	8.7L/100 km27mpg US32.5mpg UK	-
Quarter mile	12.8s Calculated	12.9s Calculated
Power-to-weight	270hp/t201kW/t122hp/1000 lb Calculated	242hp/t180kW/t110hp/1000 lb Calculated
Torque-to-weight	330Nm/t221lb-ft/ton Calculated	331Nm/t221lb-ft/ton Calculated
Estimated range	678km421mi Calculated	-
Displacement	5,000cc305cu in	6,600cc403cu in
Length	5,122mm202in	5,399mm213in
Width	1,894mm75in	1,948mm77in
Height	1,457mm57in	1,550mm61in
Wheelbase	3,032mm119in	3,295mm130in
Front track	1,626mm64in	-
Rear track	1,604mm63in	-
Trunk volume	520L	-
Doors	4	4
Seats	5	5
Fuel tank	82L	-

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.

Jaguar XJ (X351) 5.0 V8 SuperchargedRolls-Royce Ghost I 6.6 V12 48VPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
JaguarXJ (X351)5.0 V8 Supercharged	6,000-6,500 rpm	2,500-5,500 rpm	6,750 rpm
Rolls-RoyceGhost I6.6 V12 48V	5,250-6,000 rpm	-	6,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	JaguarXJ (X351)5.0 V8 Supercharged	Rolls-RoyceGhost I6.6 V12 48V
	Acceleration checkpoints
0-60 mph 0-97 km/h	4.7 s	4.7 s
0-100 km/h 0-62 mph	4.9 s	4.9 s
0-200 km/h 0-124 mph	14.4 s	15.3 s
Top speed	Unrestricted 265 km/h165 mph Restricted 250 km/h155 mph Limited	Unrestricted 265 km/h165 mph Restricted 250 km/h155 mph Likely limited
	Drag race simulation
60 ft 18 m	2.4 s	2.3 s
330 ft 101 m	5.8 s	5.8 s
1/8 mile 201 m	8.5 s	8.5 s
1000 ft 305 m	10.9 s	10.9 s
1/4 mile 402 m	12.8 s	12.9 s
Trap speed 1/4 mile 402 m	189 km/h 117 mph	184 km/h 115 mph

Power comparison

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

Chart data table
Vehicle	Value
JaguarXJ (X351)5.0 V8 Supercharged	510 hp 380 kW
Rolls-RoyceGhost I6.6 V12 48V	570 hp 425 kW

Rolls-Royce Ghost I 6.6 V12 48V has 60 hp more than Jaguar XJ (X351) 5.0 V8 Supercharged.

The biggest power difference is between Jaguar XJ (X351) 5.0 V8 Supercharged and Rolls-Royce Ghost I 6.6 V12 48V: 60 hp (45 kW).

Torque comparison

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

Chart data table
Vehicle	Value
JaguarXJ (X351)5.0 V8 Supercharged	625 Nm 461 lb-ft
Rolls-RoyceGhost I6.6 V12 48V	780 Nm 575 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
JaguarXJ (X351)5.0 V8 Supercharged	1,892 kg 4,171 lb
Rolls-RoyceGhost I6.6 V12 48V	2,360 kg 5,203 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
JaguarXJ (X351)5.0 V8 Supercharged	Unrestricted 265 km/h165 mph Restricted 250 km/h155 mph
Rolls-RoyceGhost I6.6 V12 48V	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
Vehicle	Value
JaguarXJ (X351)5.0 V8 Supercharged	4.9 s
Rolls-RoyceGhost I6.6 V12 48V	4.9 s

Although Rolls-Royce Ghost I 6.6 V12 48V has more power, Jaguar XJ (X351) 5.0 V8 Supercharged is quicker from 0-100 km/h.

Power-to-weight comparison

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

Chart data table
Vehicle	Value
JaguarXJ (X351)5.0 V8 Supercharged	270 hp/t 201 kW/t 3.7 kg/hp
Rolls-RoyceGhost I6.6 V12 48V	242 hp/t 180 kW/t 4.1 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
JaguarXJ (X351)5.0 V8 Supercharged	510 hp 380 kW	4.9 s	Unrestricted 265 km/h165 mph Restricted 250 km/h155 mph
Rolls-RoyceGhost I6.6 V12 48V	570 hp 425 kW	4.9 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.

Vehicle

Performance score

Practicality score

JaguarXJ (X351)5.0 V8 Supercharged

Power	510 hp 380 kW
0-100 km/h	4.9 s
Top speed Unrestricted 265 km/h165 mph Restricted 250 km/h155 mph

Doors/seats	4 doors 5 seats
Trunk	520 L 18.4 cu ft
Length	5,122 mm 201.7 in
Height	1,457 mm 57.4 in

Rolls-RoyceGhost I6.6 V12 48V

Power	570 hp 425 kW
0-100 km/h	4.9 s
Top speed Unrestricted 265 km/h165 mph Restricted 250 km/h155 mph

Doors/seats	4 doors 5 seats
Trunk	-
Length	5,399 mm 212.6 in
Height	1,550 mm 61.0 in

Detailed score breakdown

Vehicle

JaguarXJ (X351)5.0 V8 Supercharged

Rolls-RoyceGhost I6.6 V12 48V

Power

510 hp

380 kW

570 hp

425 kW

Torque

625 Nm

461 lb-ft

780 Nm

575 lb-ft

Acceleration

4.9 s

Top speed

Unrestricted

265 km/h165 mph

Restricted

250 km/h155 mph

Unrestricted

265 km/h165 mph

Restricted

250 km/h155 mph

Lightness

1,892 kg

4,171 lb

2,360 kg

5,203 lb

Fuel consumption

12.1 L/100 km

19.4 mpg US

23.3 mpg UK

Practicality

Doors/seats	4 doors 5 seats
Trunk	520 L 18.4 cu ft
Length	5,122 mm 201.7 in
Height	1,457 mm 57.4 in

Doors/seats	4 doors 5 seats
Trunk	-
Length	5,399 mm 212.6 in
Height	1,550 mm 61.0 in

Range score

678 km

421 mi

Trunk score

520 L

18.4 cu ft

Power-to-weight score

270 hp/t

201 kW/t

3.7 kg/hp

242 hp/t

180 kW/t

4.1 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	Jaguar XJ (X351) 5.0 V8 Supercharged
Consumption	12.1 L/100 km19.4 mpg US23.3 mpg UK
Cost / 100 km	21.18 LC100 km
Cost / 100 mi	34.08 LC100 mi
Annual fuel used	1,815 L479 US gal399 UK gal
Annual fuel cost	3,176 LC/year