Car comparison

Jaguar XK Convertible (X150) · Facelift 2011 R-S 5.0 V8vsRolls-Royce Dawn 6.6 V12

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

New comparison

Jaguar XK Convertible (X150) · Facelift 2011

R-S 5.0 V8

550 hp5000 ccGasolineRWDAutomaticSuperchargedCabriolet / convertible2011-2014
VS

Rolls-Royce Dawn

6.6 V12

571 hp6592 ccGasolineRWDAutomaticTwin-turboCabriolet / convertible2015-present

Comparison overview

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

Best choices

Jaguar XK Convertible (X150) Facelift 2011 R-S 5.0 V8

  • Quickest 0-100 km/h
    4.4 s
  • Fastest top speed
    310 km/h
    193 mph Unrestricted
    300 km/h
    186 mph Restricted
  • Lightest
    1,800 kg
    3,968 lb
  • Best power-to-weight
    306 hp/t
    228 kW/t
    3.3 kg/hp
  • Lowest combined fuel consumption
    12.3 L/100 km
    19.1 mpg US
    23.0 mpg UK
  • Lowest city consumption
    18.9 L/100 km
    12.4 mpg US
    14.9 mpg UK
  • Lowest highway consumption
    8.6 L/100 km
    27.4 mpg US
    32.8 mpg UK
  • Best overall score
    73/100
  • Best performance score
    88/100
  • Best economy score
    74/100

Rolls-Royce Dawn 6.6 V12

  • Most powerful
    571 hp
    426 kW
  • Highest torque
    820 Nm
    605 lb-ft
  • Largest trunk
    321 L
  • Best practicality score
    47/100

Specification comparison

Specification comparison
ModelJaguarXK Convertible (X150)Facelift 2011R-S 5.0 V8Rolls-RoyceDawn6.6 V12
Power
550hp410kW
571hp426kW
Torque
680Nm502lb-ft
820Nm605lb-ft
Curb weight
1,800kg3,968lb
2,560kg5,644lb
Gross weight
2,185kg4,817lb
-
Top speed
Unrestricted
310 km/h193 mph
Restricted
300 km/h186 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
65.4s99% target: 307 km/h / 191 mph
Calculated
77.0s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.4s
5.0s
0-200 km/h
12.8s
Calculated
19.2s
Calculated
0-60 mph
4.2s
Calculated
4.7s
Calculated
Fuel consumption
12.3L/100 km19.1mpg US23.0mpg UK
14.4L/100 km16.3mpg US19.6mpg UK
Fuel consumption city
18.9L/100 km12.4mpg US14.9mpg UK
22.1L/100 km10.6mpg US12.8mpg UK
Fuel consumption highway
8.6L/100 km27.4mpg US32.8mpg UK
10L/100 km23.5mpg US28.2mpg UK
Quarter mile
12.3s
Calculated
13.2s
Calculated
Power-to-weight
306hp/t228kW/t139hp/1000 lb
Calculated
223hp/t166kW/t101hp/1000 lb
Calculated
Torque-to-weight
378Nm/t253lb-ft/ton
Calculated
320Nm/t214lb-ft/ton
Calculated
Estimated range
574km357mi
Calculated
-
Displacement
5,000cc305cu in
6,592cc402cu in
Length
4,804mm189in
5,285mm208in
Width
1,892mm74in
1,947mm77in
Height
1,319mm52in
1,502mm59in
Wheelbase
2,752mm108in
3,112mm123in
Ground clearance
100mm4in
-
Trunk volume
200L
321L
Max trunk volume
313L
-
Doors
2
2
Seats
4
4
Fuel tank
71L
-
CO2 emissions-
330g/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.

Jaguar XK Convertible (X150) Facelift 2011 R-S 5.0 V8Rolls-Royce Dawn 6.6 V12PowerTorque
  • Jaguar XK Convertible (X150) Facelift 2011 R-S 5.0 V8: Power / Torque
  • Rolls-Royce Dawn 6.6 V12: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
JaguarXK Convertible (X150)Facelift 2011R-S 5.0 V86,000-6,500 rpm2,500-5,500 rpm6,750 rpm
Rolls-RoyceDawn6.6 V125,250-6,000 rpm1,500-5,000 rpm6,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricJaguarXK Convertible (X150)Facelift 2011R-S 5.0 V8Rolls-RoyceDawn6.6 V12
Acceleration checkpoints
0-60 mph
0-97 km/h
4.2 s
4.7 s
0-100 km/h
0-62 mph
4.4 s
5.0 s
0-200 km/h
0-124 mph
12.8 s
19.2 s
Top speed
Unrestricted
310 km/h193 mph
Restricted
300 km/h186 mph
Limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.1 s
2.1 s
330 ft
101 m
5.5 s
5.7 s
1/8 mile
201 m
8.1 s
8.6 s
1000 ft
305 m
10.4 s
11.1 s
1/4 mile
402 m
12.3 s
13.2 s
Trap speed
1/4 mile
402 m
195 km/h
121 mph
172 km/h
107 mph

Power comparison

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

Chart data table
VehicleValue
JaguarXK Convertible (X150)Facelift 2011R-S 5.0 V8
550 hp
410 kW
Rolls-RoyceDawn6.6 V12
571 hp
426 kW

Rolls-Royce Dawn 6.6 V12 has 21 hp more than Jaguar XK Convertible (X150) Facelift 2011 R-S 5.0 V8.

The biggest power difference is between Jaguar XK Convertible (X150) Facelift 2011 R-S 5.0 V8 and Rolls-Royce Dawn 6.6 V12: 21 hp (16 kW).

Torque comparison

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

Chart data table
VehicleValue
JaguarXK Convertible (X150)Facelift 2011R-S 5.0 V8
680 Nm
502 lb-ft
Rolls-RoyceDawn6.6 V12
820 Nm
605 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
JaguarXK Convertible (X150)Facelift 2011R-S 5.0 V8
1,800 kg
3,968 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
VehicleValue
JaguarXK Convertible (X150)Facelift 2011R-S 5.0 V8
Unrestricted
310 km/h193 mph
Restricted
300 km/h186 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
VehicleValue
JaguarXK Convertible (X150)Facelift 2011R-S 5.0 V84.4 s
Rolls-RoyceDawn6.6 V125.0 s

Although Rolls-Royce Dawn 6.6 V12 has more power, Jaguar XK Convertible (X150) Facelift 2011 R-S 5.0 V8 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Jaguar XK Convertible (X150) Facelift 2011 R-S 5.0 V8 and Rolls-Royce Dawn 6.6 V12: 0.6 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 2011R-S 5.0 V8
12.3 L/100 km
19.1 mpg US
23.0 mpg UK
Rolls-RoyceDawn6.6 V12
14.4 L/100 km
16.3 mpg US
19.6 mpg UK

The biggest fuel consumption difference is between Jaguar XK Convertible (X150) Facelift 2011 R-S 5.0 V8 and Rolls-Royce Dawn 6.6 V12: 2.1 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 2011R-S 5.0 V8
306 hp/t
228 kW/t
3.3 kg/hp
Rolls-RoyceDawn6.6 V12
223 hp/t
166 kW/t
4.5 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
JaguarXK Convertible (X150)Facelift 2011R-S 5.0 V8
550 hp
410 kW
4.4 s
Unrestricted
310 km/h193 mph
Restricted
300 km/h186 mph
Rolls-RoyceDawn6.6 V12
571 hp
426 kW
5.0 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.

Chart data table
VehiclePerformance scorePracticality score
JaguarXK Convertible (X150)Facelift 2011R-S 5.0 V8
Power
550 hp
410 kW
0-100 km/h4.4 s
Top speed
Unrestricted
310 km/h193 mph
Restricted
300 km/h186 mph
Doors/seats
2 doors
4 seats
Trunk
200 L
7.1 cu ft
Length
4,804 mm
189.1 in
Height
1,319 mm
51.9 in
Rolls-RoyceDawn6.6 V12
Power
571 hp
426 kW
0-100 km/h5.0 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.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
JaguarXK Convertible (X150)Facelift 2011R-S 5.0 V8
Power
550 hp
410 kW
0-100 km/h4.4 s
Top speed
Unrestricted
310 km/h193 mph
Restricted
300 km/h186 mph
12.3 L/100 km
19.1 mpg US
23.0 mpg UK
Rolls-RoyceDawn6.6 V12
Power
571 hp
426 kW
0-100 km/h5.0 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
14.4 L/100 km
16.3 mpg US
19.6 mpg UK

Jaguar XK Convertible (X150) Facelift 2011 R-S 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 2011R-S 5.0 V8
12.3 L/100 km
19.1 mpg US
23.0 mpg UK
4.4 s
Rolls-RoyceDawn6.6 V12
14.4 L/100 km
16.3 mpg US
19.6 mpg UK
5.0 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 2011R-S 5.0 V8
306 hp/t
228 kW/t
3.3 kg/hp
12.3 L/100 km
19.1 mpg US
23.0 mpg UK
Rolls-RoyceDawn6.6 V12
223 hp/t
166 kW/t
4.5 kg/hp
14.4 L/100 km
16.3 mpg US
19.6 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleJaguarXK Convertible (X150)Facelift 2011R-S 5.0 V8Rolls-RoyceDawn6.6 V12
Power
550 hp
410 kW
571 hp
426 kW
Torque
680 Nm
502 lb-ft
820 Nm
605 lb-ft
Acceleration
4.4 s
5.0 s
Top speed
Unrestricted
310 km/h193 mph
Restricted
300 km/h186 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,800 kg
3,968 lb
2,560 kg
5,644 lb
Fuel consumption
12.3 L/100 km
19.1 mpg US
23.0 mpg UK
14.4 L/100 km
16.3 mpg US
19.6 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
200 L
7.1 cu ft
Length
4,804 mm
189.1 in
Height
1,319 mm
51.9 in
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
574 km
357 mi
-
CO2 score
-
330 g/km
Trunk score
200 L
7.1 cu ft
321 L
11.3 cu ft
Power-to-weight score
306 hp/t
228 kW/t
3.3 kg/hp
223 hp/t
166 kW/t
4.5 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 2011 R-S 5.0 V8Rolls-Royce Dawn 6.6 V12
Consumption12.3 L/100 km19.1 mpg US23 mpg UK14.4 L/100 km16.3 mpg US19.6 mpg UK
Cost / 100 km21.53 LC100 km25.20 LC100 km
Cost / 100 mi34.64 LC100 mi40.56 LC100 mi
Annual fuel used1,845 L487 US gal406 UK gal2,160 L571 US gal475 UK gal
Annual fuel cost3,229 LC/year3,780 LC/year

Head-to-head comparisons

Jaguar XK Convertible (X150) Facelift 2011 R-S 5.0 V8

  • Is 760 kg lighter
  • Is 0.6 s quicker from 0-100 km/h
  • Has 50 km/h (31 mph) higher top speed
  • Uses 2.1 L/100 km less fuel
  • Has 83 hp/t better power-to-weight

Pros

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

Cons

  • Lowest power
  • Smallest trunk

Rolls-Royce Dawn 6.6 V12

  • Has 21 hp more
  • Has 140 Nm more
  • Has 121 L more trunk volume

Pros

  • Most powerful
  • Highest torque
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Heaviest
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Jaguar XK Convertible (X150) R-S 5.0 V8
Rolls-Royce Dawn 6.6 V12
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2 vehicles selected

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