Car comparison

Jaguar XK Convertible (X150) · Facelift 2009 5.0 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

Jaguar XK Convertible (X150) · Facelift 2009

5.0 V8

385 hp5000 ccGasolineRWDAutomaticNaturally aspiratedCabriolet / convertible2009-2011
VS

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.

Best choices

Jaguar XK Convertible (X150) Facelift 2009 5.0 V8

  • Quickest 0-100 km/h
    5.6 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Lightest
    1,696 kg
    3,739 lb
  • Best power-to-weight
    227 hp/t
    169 kW/t
    4.4 kg/hp
  • Lowest combined fuel consumption
    11.2 L/100 km
    21.0 mpg US
    25.2 mpg UK
  • Lowest city consumption
    17.1 L/100 km
    13.8 mpg US
    16.5 mpg UK
  • Lowest highway consumption
    8.0 L/100 km
    29.4 mpg US
    35.3 mpg UK
  • Best estimated range
    630 km
    392 mi
  • Best economy score
    77/100

Specification comparison

Specification comparison
ModelJaguarXK Convertible (X150)Facelift 20095.0 V8Rolls-RoycePhantom Drophead Coupe6.75 i V12
Power
385hp287kW
460hp343kW
Torque
515Nm380lb-ft
720Nm531lb-ft
Curb weight
1,696kg3,739lb
2,620kg5,776lb
Gross weight
2,120kg4,674lb
3,050kg6,724lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
Calculated
To 99% top speed
73.2s99% target: 257 km/h / 160 mph
Calculated
97.9s99% target: 248 km/h / 154 mph
Calculated
0-100 km/h
5.6s
5.9s
0-200 km/h
19.8s
Calculated
25.6s
Calculated
0-60 mph
5.3s
Calculated
5.6s
Calculated
Fuel consumption
11.2L/100 km21mpg US25.2mpg UK
15.9L/100 km14.8mpg US17.8mpg UK
Fuel consumption city
17.1L/100 km13.8mpg US16.5mpg UK
24.6L/100 km9.6mpg US11.5mpg UK
Fuel consumption highway
8L/100 km29.4mpg US35.3mpg UK
11L/100 km21.4mpg US25.7mpg UK
Quarter mile
13.7s
Calculated
14.1s
Calculated
Power-to-weight
227hp/t169kW/t103hp/1000 lb
Calculated
176hp/t131kW/t80hp/1000 lb
Calculated
Torque-to-weight
304Nm/t203lb-ft/ton
Calculated
275Nm/t184lb-ft/ton
Calculated
Estimated range
630km392mi
Calculated
503km313mi
Calculated
Displacement
5,000cc305cu in
6,749cc412cu in
Length
4,794mm189in
5,609mm221in
Width
1,892mm74in
1,987mm78in
Height
1,329mm52in
1,581mm62in
Wheelbase
2,752mm108in
3,320mm131in
Front track-
1,685mm66in
Rear track-
1,670mm66in
Ground clearance
100mm4in
-
Trunk volume
200L
315L
Max trunk volume
313L
-
Doors
2
2
Seats
4
5
Fuel tank
71L
80L

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 XK Convertible (X150) Facelift 2009 5.0 V8Rolls-Royce Phantom Drophead Coupe 6.75 i V12PowerTorque
  • Jaguar XK Convertible (X150) Facelift 2009 5.0 V8: Power / Torque
  • Rolls-Royce Phantom Drophead Coupe 6.75 i V12: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
JaguarXK Convertible (X150)Facelift 20095.0 V86,500 rpm3,500 rpm6,750 rpm
Rolls-RoycePhantom Drophead Coupe6.75 i V125,350 rpm3,500 rpm5,600 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricJaguarXK Convertible (X150)Facelift 20095.0 V8Rolls-RoycePhantom Drophead Coupe6.75 i V12
Acceleration checkpoints
0-60 mph
0-97 km/h
5.3 s
5.6 s
0-100 km/h
0-62 mph
5.6 s
5.9 s
0-200 km/h
0-124 mph
19.8 s
25.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
Likely limited
Drag race simulation
60 ft
18 m
2.3 s
2.2 s
330 ft
101 m
6.0 s
6.0 s
1/8 mile
201 m
9.0 s
9.1 s
1000 ft
305 m
11.6 s
11.8 s
1/4 mile
402 m
13.7 s
14.1 s
Trap speed
1/4 mile
402 m
170 km/h
106 mph
159 km/h
99 mph

Power comparison

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

Chart data table
VehicleValue
JaguarXK Convertible (X150)Facelift 20095.0 V8
385 hp
287 kW
Rolls-RoycePhantom Drophead Coupe6.75 i V12
460 hp
343 kW

Rolls-Royce Phantom Drophead Coupe 6.75 i V12 has 75 hp more than Jaguar XK Convertible (X150) Facelift 2009 5.0 V8.

The biggest power difference is between Jaguar XK Convertible (X150) Facelift 2009 5.0 V8 and Rolls-Royce Phantom Drophead Coupe 6.75 i V12: 75 hp (56 kW).

Torque comparison

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

Chart data table
VehicleValue
JaguarXK Convertible (X150)Facelift 20095.0 V8
515 Nm
380 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
VehicleValue
JaguarXK Convertible (X150)Facelift 20095.0 V8
1,696 kg
3,739 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
VehicleValue
JaguarXK Convertible (X150)Facelift 20095.0 V8
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 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
VehicleValue
JaguarXK Convertible (X150)Facelift 20095.0 V85.6 s
Rolls-RoycePhantom Drophead Coupe6.75 i V125.9 s

Although Rolls-Royce Phantom Drophead Coupe 6.75 i V12 has more power, Jaguar XK Convertible (X150) Facelift 2009 5.0 V8 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Jaguar XK Convertible (X150) Facelift 2009 5.0 V8 and Rolls-Royce Phantom Drophead Coupe 6.75 i V12: 0.3 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
JaguarXK Convertible (X150)Facelift 20095.0 V8
11.2 L/100 km
21.0 mpg US
25.2 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 Jaguar XK Convertible (X150) Facelift 2009 5.0 V8 and Rolls-Royce Phantom Drophead Coupe 6.75 i V12: 4.7 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
JaguarXK Convertible (X150)Facelift 20095.0 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
VehicleValue
JaguarXK Convertible (X150)Facelift 20095.0 V8
630 km
392 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
VehiclePowerAccelerationTop speed
JaguarXK Convertible (X150)Facelift 20095.0 V8
385 hp
287 kW
5.6 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 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.

Chart data table
VehiclePerformance scorePracticality score
JaguarXK Convertible (X150)Facelift 20095.0 V8
Power
385 hp
287 kW
0-100 km/h5.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
200 L
7.1 cu ft
Length
4,794 mm
188.7 in
Height
1,329 mm
52.3 in
Rolls-RoycePhantom Drophead Coupe6.75 i V12
Power
460 hp
343 kW
0-100 km/h5.9 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.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
JaguarXK Convertible (X150)Facelift 20095.0 V8
Power
385 hp
287 kW
0-100 km/h5.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
11.2 L/100 km
21.0 mpg US
25.2 mpg UK
Rolls-RoycePhantom Drophead Coupe6.75 i V12
Power
460 hp
343 kW
0-100 km/h5.9 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

Jaguar XK Convertible (X150) Facelift 2009 5.0 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
VehicleFuel consumption, L/100 km0-100 km/h, s
JaguarXK Convertible (X150)Facelift 20095.0 V8
11.2 L/100 km
21.0 mpg US
25.2 mpg UK
5.6 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
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
JaguarXK Convertible (X150)Facelift 20095.0 V8
227 hp/t
169 kW/t
4.4 kg/hp
11.2 L/100 km
21.0 mpg US
25.2 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

Detailed score breakdown
VehicleJaguarXK Convertible (X150)Facelift 20095.0 V8Rolls-RoycePhantom Drophead Coupe6.75 i V12
Power
385 hp
287 kW
460 hp
343 kW
Torque
515 Nm
380 lb-ft
720 Nm
531 lb-ft
Acceleration
5.6 s
5.9 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
Lightness
1,696 kg
3,739 lb
2,620 kg
5,776 lb
Fuel consumption
11.2 L/100 km
21.0 mpg US
25.2 mpg UK
15.9 L/100 km
14.8 mpg US
17.8 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
200 L
7.1 cu ft
Length
4,794 mm
188.7 in
Height
1,329 mm
52.3 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
630 km
392 mi
503 km
313 mi
Trunk score
200 L
7.1 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
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
VehicleJaguar XK Convertible (X150) Facelift 2009 5.0 V8Rolls-Royce Phantom Drophead Coupe 6.75 i V12
Consumption11.2 L/100 km21 mpg US25.2 mpg UK15.9 L/100 km14.8 mpg US17.8 mpg UK
Cost / 100 km19.60 LC100 km27.83 LC100 km
Cost / 100 mi31.54 LC100 mi44.78 LC100 mi
Annual fuel used1,680 L444 US gal370 UK gal2,385 L630 US gal525 UK gal
Annual fuel cost2,940 LC/year4,174 LC/year

Head-to-head comparisons

Jaguar XK Convertible (X150) Facelift 2009 5.0 V8

  • Is 924 kg lighter
  • Is 0.3 s quicker from 0-100 km/h
  • Has 10 km/h (6 mph) higher top speed
  • Uses 4.7 L/100 km less fuel
  • Has 51 hp/t better power-to-weight
  • Has 127 km (79 mi) more estimated range

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range

Cons

  • Lowest power
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
Jaguar XK Convertible (X150) 5.0 V8
Rolls-Royce Phantom Drophead Coupe 6.75 i V12
Compare selected cars
2 vehicles selected

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Jaguar XK Convertible (X150) · Facelift 2009 5.0 V8 vs Rolls-Royce Phantom Drophead Coupe 6.75 i V12 - car comparison - FastVsFaster