Car comparison

Alpina B6 Cabrio (E64) 4.4 V8vsJaguar XK Convertible (X150) · Facelift 2009 R 5.0 V8

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

New comparison

Alpina B6 Cabrio (E64)

4.4 V8

500 hp4398 ccGasolineRWDAutomaticSuperchargedCabriolet / convertible2005-2008
VS

Jaguar XK Convertible (X150) · Facelift 2009

R 5.0 V8

510 hp5000 ccGasolineRWDAutomaticSuperchargedCabriolet / convertible2009-2011

Comparison overview

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

Best choices

Jaguar XK Convertible (X150) Facelift 2009 R 5.0 V8

  • Quickest 0-100 km/h
    4.8 s
  • Most powerful
    510 hp
    380 kW
  • Lightest
    1,800 kg
    3,968 lb
  • Best power-to-weight
    283 hp/t
    211 kW/t
    3.5 kg/hp
  • Lowest combined fuel consumption
    12.3 L/100 km
    19.1 mpg US
    23.0 mpg UK
  • Lowest highway consumption
    8.6 L/100 km
    27.4 mpg US
    32.8 mpg UK
  • Best estimated range
    574 km
    357 mi
  • Best economy score
    74/100

Alpina B6 Cabrio (E64) 4.4 V8

  • Fastest top speed
    320 km/h
    199 mph Unrestricted
    310 km/h
    193 mph Restricted
  • Highest torque
    700 Nm
    516 lb-ft
  • Lowest city consumption
    18.9 L/100 km
    12.4 mpg US
    14.9 mpg UK
  • Largest trunk
    450 L
  • Best overall score
    75/100
  • Best performance score
    87/100
  • Best practicality score
    48/100

Specification comparison

Specification comparison
ModelAlpinaB6 Cabrio (E64)4.4 V8JaguarXK Convertible (X150)Facelift 2009R 5.0 V8
Power
500hp373kW
510hp380kW
Torque
700Nm516lb-ft
625Nm461lb-ft
Curb weight
1,930kg4,255lb
1,800kg3,968lb
Gross weight
2,350kg5,181lb
2,185kg4,817lb
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
84.6s99% target: 317 km/h / 197 mph
Calculated
57.8s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.9s
4.8s
0-200 km/h
14.6s
Calculated
16.3s
Calculated
0-60 mph
4.7s
Calculated
4.6s
Calculated
Fuel consumption
12.8L/100 km18.4mpg US22.1mpg UK
12.3L/100 km19.1mpg US23.0mpg UK
Fuel consumption city
18.9L/100 km12.4mpg US14.9mpg UK
18.9L/100 km12.4mpg US14.9mpg UK
Fuel consumption highway
9.3L/100 km25.3mpg US30.4mpg UK
8.6L/100 km27.4mpg US32.8mpg UK
Quarter mile
12.8s
Calculated
12.9s
Calculated
Power-to-weight
259hp/t193kW/t118hp/1000 lb
Calculated
283hp/t211kW/t129hp/1000 lb
Calculated
Torque-to-weight
363Nm/t243lb-ft/ton
Calculated
347Nm/t232lb-ft/ton
Calculated
Estimated range
547km340mi
Calculated
574km357mi
Calculated
Displacement
4,398cc268cu in
5,000cc305cu in
Length
4,820mm190in
4,794mm189in
Width
1,855mm73in
-
Height
1,371mm54in
1,329mm52in
Wheelbase
2,780mm109in
2,752mm108in
Front track
1,558mm61in
-
Rear track
1,598mm63in
-
Ground clearance-
100mm4in
Trunk volume-
200L
Max trunk volume
450L
313L
Doors
2
2
Seats
4
4
Fuel tank
70L
71L
CO2 emissions
306g/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.

Alpina B6 Cabrio (E64) 4.4 V8Jaguar XK Convertible (X150) Facelift 2009 R 5.0 V8PowerTorque
  • Alpina B6 Cabrio (E64) 4.4 V8: Power / Torque
  • Jaguar XK Convertible (X150) Facelift 2009 R 5.0 V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AlpinaB6 Cabrio (E64)4.4 V85,500 rpm4,250 rpm5,750 rpm
JaguarXK Convertible (X150)Facelift 2009R 5.0 V86,000-6,500 rpm2,500-5,500 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAlpinaB6 Cabrio (E64)4.4 V8JaguarXK Convertible (X150)Facelift 2009R 5.0 V8
Acceleration checkpoints
0-60 mph
0-97 km/h
4.7 s
4.6 s
0-100 km/h
0-62 mph
4.9 s
4.8 s
0-200 km/h
0-124 mph
14.6 s
16.3 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Likely limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
Drag race simulation
60 ft
18 m
2.2 s
2.2 s
330 ft
101 m
5.7 s
5.7 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
187 km/h
116 mph
181 km/h
112 mph

Power comparison

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

Chart data table
VehicleValue
AlpinaB6 Cabrio (E64)4.4 V8
500 hp
373 kW
JaguarXK Convertible (X150)Facelift 2009R 5.0 V8
510 hp
380 kW

Jaguar XK Convertible (X150) Facelift 2009 R 5.0 V8 has 10 hp more than Alpina B6 Cabrio (E64) 4.4 V8.

The biggest power difference is between Alpina B6 Cabrio (E64) 4.4 V8 and Jaguar XK Convertible (X150) Facelift 2009 R 5.0 V8: 10 hp (7 kW).

Torque comparison

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

Chart data table
VehicleValue
AlpinaB6 Cabrio (E64)4.4 V8
700 Nm
516 lb-ft
JaguarXK Convertible (X150)Facelift 2009R 5.0 V8
625 Nm
461 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AlpinaB6 Cabrio (E64)4.4 V8
1,930 kg
4,255 lb
JaguarXK Convertible (X150)Facelift 2009R 5.0 V8
1,800 kg
3,968 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
AlpinaB6 Cabrio (E64)4.4 V8
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
JaguarXK Convertible (X150)Facelift 2009R 5.0 V8
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
AlpinaB6 Cabrio (E64)4.4 V84.9 s
JaguarXK Convertible (X150)Facelift 2009R 5.0 V84.8 s

The biggest 0-100 km/h difference is between Jaguar XK Convertible (X150) Facelift 2009 R 5.0 V8 and Alpina B6 Cabrio (E64) 4.4 V8: 0.1 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
AlpinaB6 Cabrio (E64)4.4 V8
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
JaguarXK Convertible (X150)Facelift 2009R 5.0 V8
12.3 L/100 km
19.1 mpg US
23.0 mpg UK

The biggest fuel consumption difference is between Jaguar XK Convertible (X150) Facelift 2009 R 5.0 V8 and Alpina B6 Cabrio (E64) 4.4 V8: 0.5 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
AlpinaB6 Cabrio (E64)4.4 V8
259 hp/t
193 kW/t
3.9 kg/hp
JaguarXK Convertible (X150)Facelift 2009R 5.0 V8
283 hp/t
211 kW/t
3.5 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AlpinaB6 Cabrio (E64)4.4 V8
547 km
340 mi
JaguarXK Convertible (X150)Facelift 2009R 5.0 V8
574 km
357 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AlpinaB6 Cabrio (E64)4.4 V8
500 hp
373 kW
4.9 s
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
JaguarXK Convertible (X150)Facelift 2009R 5.0 V8
510 hp
380 kW
4.8 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
AlpinaB6 Cabrio (E64)4.4 V8
Power
500 hp
373 kW
0-100 km/h4.9 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Doors/seats
2 doors
4 seats
Trunk
450 L
15.9 cu ft
Length
4,820 mm
189.8 in
Height
1,371 mm
54.0 in
JaguarXK Convertible (X150)Facelift 2009R 5.0 V8
Power
510 hp
380 kW
0-100 km/h4.8 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

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
AlpinaB6 Cabrio (E64)4.4 V8
Power
500 hp
373 kW
0-100 km/h4.9 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
JaguarXK Convertible (X150)Facelift 2009R 5.0 V8
Power
510 hp
380 kW
0-100 km/h4.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
12.3 L/100 km
19.1 mpg US
23.0 mpg UK

Alpina B6 Cabrio (E64) 4.4 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
AlpinaB6 Cabrio (E64)4.4 V8
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
4.9 s
JaguarXK Convertible (X150)Facelift 2009R 5.0 V8
12.3 L/100 km
19.1 mpg US
23.0 mpg UK
4.8 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
AlpinaB6 Cabrio (E64)4.4 V8
259 hp/t
193 kW/t
3.9 kg/hp
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
JaguarXK Convertible (X150)Facelift 2009R 5.0 V8
283 hp/t
211 kW/t
3.5 kg/hp
12.3 L/100 km
19.1 mpg US
23.0 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAlpinaB6 Cabrio (E64)4.4 V8JaguarXK Convertible (X150)Facelift 2009R 5.0 V8
Power
500 hp
373 kW
510 hp
380 kW
Torque
700 Nm
516 lb-ft
625 Nm
461 lb-ft
Acceleration
4.9 s
4.8 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,930 kg
4,255 lb
1,800 kg
3,968 lb
Fuel consumption
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
12.3 L/100 km
19.1 mpg US
23.0 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
450 L
15.9 cu ft
Length
4,820 mm
189.8 in
Height
1,371 mm
54.0 in
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
Range score
547 km
340 mi
574 km
357 mi
CO2 score
306 g/km
-
Trunk score
450 L
15.9 cu ft
200 L
7.1 cu ft
Power-to-weight score
259 hp/t
193 kW/t
3.9 kg/hp
283 hp/t
211 kW/t
3.5 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
VehicleAlpina B6 Cabrio (E64) 4.4 V8Jaguar XK Convertible (X150) Facelift 2009 R 5.0 V8
Consumption12.8 L/100 km18.4 mpg US22.1 mpg UK12.3 L/100 km19.1 mpg US23 mpg UK
Cost / 100 km22.40 LC100 km21.53 LC100 km
Cost / 100 mi36.05 LC100 mi34.64 LC100 mi
Annual fuel used1,920 L507 US gal422 UK gal1,845 L487 US gal406 UK gal
Annual fuel cost3,360 LC/year3,229 LC/year

Head-to-head comparisons

Alpina B6 Cabrio (E64) 4.4 V8

  • Has 75 Nm more
  • Has 60 km/h (37 mph) higher top speed
  • Has 250 L more trunk volume

Pros

  • Highest top speed
  • Highest torque
  • Largest trunk

Cons

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

Jaguar XK Convertible (X150) Facelift 2009 R 5.0 V8

  • Has 10 hp more
  • Is 130 kg lighter
  • Is 0.1 s quicker from 0-100 km/h
  • Uses 0.5 L/100 km less fuel
  • Has 24 hp/t better power-to-weight
  • Has 27 km (17 mi) more estimated range

Pros

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

Cons

  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
Alpina B6 Cabrio (E64) 4.4 V8
Jaguar XK Convertible (X150) R 5.0 V8
Compare selected cars
2 vehicles selected

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