Car comparison

Alfa Romeo Giulia (952) Quadrifoglio 2.9 V6vsJaguar XJ (X351) · Facelift 2015 5.0 V8

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

New comparison

Alfa Romeo Giulia (952)

Quadrifoglio 2.9 V6

510 hp2891 ccGasolineRWDManualTwin-turboSedan2016-2018
VS

Jaguar XJ (X351) · Facelift 2015

5.0 V8

510 hp5000 ccGasolineRWDAutomaticSuperchargedSedan2015-2018

Comparison overview

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

Best choices

Alfa Romeo Giulia (952) Quadrifoglio 2.9 V6

  • Quickest 0-100 km/h
    3.9 s
  • Fastest top speed
    307 km/h
    191 mph
  • Most powerful
    510 hp
    380 kW
  • Lightest
    1,580 kg
    3,483 lb
  • Best power-to-weight
    323 hp/t
    241 kW/t
    3.1 kg/hp
  • Lowest combined fuel consumption
    8.5 L/100 km
    27.7 mpg US
    33.2 mpg UK
  • Lowest CO2 emissions
    198 g/km
  • Best overall score
    83/100
  • Best performance score
    89/100
  • Best economy score
    84/100

Specification comparison

Specification comparison
ModelAlfa RomeoGiulia (952)Quadrifoglio 2.9 V6JaguarXJ (X351)Facelift 20155.0 V8
Power
510hp380kW
510hp380kW
Torque
600Nm443lb-ft
625Nm461lb-ft
Curb weight
1,580kg3,483lb
1,875kg4,134lb
Top speed
307 km/h
191 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
38.5s99% target: 304 km/h / 189 mph
Calculated
46.9s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
3.9s
4.9s
0-200 km/h
9.8s
Calculated
14.4s
Calculated
0-60 mph
3.8s
Calculated
4.7s
Calculated
Fuel consumption
8.5L/100 km27.7mpg US33.2mpg UK
11.1L/100 km21.2mpg US25.4mpg UK
Fuel consumption city
12.8L/100 km18.4mpg US22.1mpg UK
-
Fuel consumption highway
6.1L/100 km38.6mpg US46.3mpg UK
-
Quarter mile
11.4s
Calculated
12.8s
Calculated
Power-to-weight
323hp/t241kW/t146hp/1000 lb
Calculated
272hp/t203kW/t123hp/1000 lb
Calculated
Torque-to-weight
380Nm/t254lb-ft/ton
Calculated
333Nm/t223lb-ft/ton
Calculated
Estimated range
682km424mi
Calculated
721km448mi
Calculated
Displacement
2,891cc176cu in
5,000cc305cu in
Length
4,639mm183in
5,130mm202in
Width
1,873mm74in
1,899mm75in
Height
1,426mm56in
1,460mm57in
Wheelbase
2,820mm111in
3,032mm119in
Front track
1,555mm61in
1,626mm64in
Rear track
1,607mm63in
1,604mm63in
Trunk volume
480L
-
Doors
4
4
Seats
4
5
Fuel tank
58L
80L
CO2 emissions
198g/km
264g/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.

Alfa Romeo Giulia (952) Quadrifoglio 2.9 V6Jaguar XJ (X351) Facelift 2015 5.0 V8PowerTorque
  • Alfa Romeo Giulia (952) Quadrifoglio 2.9 V6: Power / Torque
  • Jaguar XJ (X351) Facelift 2015 5.0 V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Alfa RomeoGiulia (952)Quadrifoglio 2.9 V66,500 rpm2,500 rpm6,750 rpm
JaguarXJ (X351)Facelift 20155.0 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
MetricAlfa RomeoGiulia (952)Quadrifoglio 2.9 V6JaguarXJ (X351)Facelift 20155.0 V8
Acceleration checkpoints
0-60 mph
0-97 km/h
3.8 s
4.7 s
0-100 km/h
0-62 mph
3.9 s
4.9 s
0-200 km/h
0-124 mph
9.8 s
14.4 s
Top speed
307 km/h
191 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.2 s
2.4 s
330 ft
101 m
5.3 s
5.8 s
1/8 mile
201 m
7.7 s
8.5 s
1000 ft
305 m
9.7 s
10.9 s
1/4 mile
402 m
11.4 s
12.8 s
Trap speed
1/4 mile
402 m
218 km/h
136 mph
189 km/h
117 mph

Power comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)Quadrifoglio 2.9 V6
510 hp
380 kW
JaguarXJ (X351)Facelift 20155.0 V8
510 hp
380 kW

Torque comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)Quadrifoglio 2.9 V6
600 Nm
443 lb-ft
JaguarXJ (X351)Facelift 20155.0 V8
625 Nm
461 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)Quadrifoglio 2.9 V6
1,580 kg
3,483 lb
JaguarXJ (X351)Facelift 20155.0 V8
1,875 kg
4,134 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)Quadrifoglio 2.9 V6
307 km/h
191 mph
JaguarXJ (X351)Facelift 20155.0 V8
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
VehicleValue
Alfa RomeoGiulia (952)Quadrifoglio 2.9 V63.9 s
JaguarXJ (X351)Facelift 20155.0 V84.9 s

The biggest 0-100 km/h difference is between Alfa Romeo Giulia (952) Quadrifoglio 2.9 V6 and Jaguar XJ (X351) Facelift 2015 5.0 V8: 1.0 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)Quadrifoglio 2.9 V6
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
JaguarXJ (X351)Facelift 20155.0 V8
11.1 L/100 km
21.2 mpg US
25.4 mpg UK

The biggest fuel consumption difference is between Alfa Romeo Giulia (952) Quadrifoglio 2.9 V6 and Jaguar XJ (X351) Facelift 2015 5.0 V8: 2.6 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
Alfa RomeoGiulia (952)Quadrifoglio 2.9 V6
323 hp/t
241 kW/t
3.1 kg/hp
JaguarXJ (X351)Facelift 20155.0 V8
272 hp/t
203 kW/t
3.7 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)Quadrifoglio 2.9 V6
682 km
424 mi
JaguarXJ (X351)Facelift 20155.0 V8
721 km
448 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Alfa RomeoGiulia (952)Quadrifoglio 2.9 V6
510 hp
380 kW
3.9 s
307 km/h
191 mph
JaguarXJ (X351)Facelift 20155.0 V8
510 hp
380 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.

Chart data table
VehiclePerformance scorePracticality score
Alfa RomeoGiulia (952)Quadrifoglio 2.9 V6
Power
510 hp
380 kW
0-100 km/h3.9 s
Top speed
307 km/h
191 mph
Doors/seats
4 doors
4 seats
Trunk
480 L
17.0 cu ft
Length
4,639 mm
182.6 in
Height
1,426 mm
56.1 in
JaguarXJ (X351)Facelift 20155.0 V8
Power
510 hp
380 kW
0-100 km/h4.9 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk-
Length
5,130 mm
202.0 in
Height
1,460 mm
57.5 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
Alfa RomeoGiulia (952)Quadrifoglio 2.9 V6
Power
510 hp
380 kW
0-100 km/h3.9 s
Top speed
307 km/h
191 mph
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
JaguarXJ (X351)Facelift 20155.0 V8
Power
510 hp
380 kW
0-100 km/h4.9 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
11.1 L/100 km
21.2 mpg US
25.4 mpg UK

Alfa Romeo Giulia (952) Quadrifoglio 2.9 V6 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
Alfa RomeoGiulia (952)Quadrifoglio 2.9 V6
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
3.9 s
JaguarXJ (X351)Facelift 20155.0 V8
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
4.9 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
Alfa RomeoGiulia (952)Quadrifoglio 2.9 V6
323 hp/t
241 kW/t
3.1 kg/hp
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
JaguarXJ (X351)Facelift 20155.0 V8
272 hp/t
203 kW/t
3.7 kg/hp
11.1 L/100 km
21.2 mpg US
25.4 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAlfa RomeoGiulia (952)Quadrifoglio 2.9 V6JaguarXJ (X351)Facelift 20155.0 V8
Power
510 hp
380 kW
510 hp
380 kW
Torque
600 Nm
443 lb-ft
625 Nm
461 lb-ft
Acceleration
3.9 s
4.9 s
Top speed
307 km/h
191 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,580 kg
3,483 lb
1,875 kg
4,134 lb
Fuel consumption
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
Practicality
Doors/seats
4 doors
4 seats
Trunk
480 L
17.0 cu ft
Length
4,639 mm
182.6 in
Height
1,426 mm
56.1 in
Doors/seats
4 doors
5 seats
Trunk-
Length
5,130 mm
202.0 in
Height
1,460 mm
57.5 in
Range score
682 km
424 mi
721 km
448 mi
CO2 score
198 g/km
264 g/km
Trunk score
480 L
17.0 cu ft
-
Power-to-weight score
323 hp/t
241 kW/t
3.1 kg/hp
272 hp/t
203 kW/t
3.7 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
VehicleAlfa Romeo Giulia (952) Quadrifoglio 2.9 V6Jaguar XJ (X351) Facelift 2015 5.0 V8
Consumption8.5 L/100 km27.7 mpg US33.2 mpg UK11.1 L/100 km21.2 mpg US25.4 mpg UK
Cost / 100 km14.88 LC100 km19.43 LC100 km
Cost / 100 mi23.94 LC100 mi31.26 LC100 mi
Annual fuel used1,275 L337 US gal280 UK gal1,665 L440 US gal366 UK gal
Annual fuel cost2,231 LC/year2,914 LC/year

Head-to-head comparisons

Alfa Romeo Giulia (952) Quadrifoglio 2.9 V6

  • Is 295 kg lighter
  • Is 1.0 s quicker from 0-100 km/h
  • Has 42 km/h (26 mph) higher top speed
  • Uses 2.6 L/100 km less fuel
  • Has 51 hp/t better power-to-weight
  • Emits 66 g/km less CO2

Pros

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

Jaguar XJ (X351) Facelift 2015 5.0 V8

  • Has 25 Nm more
  • Has 38 km (24 mi) more estimated range

Pros

  • Highest torque
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Heaviest
  • Lowest top speed
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
Alfa Romeo Giulia (952) Quadrifoglio 2.9 V6
Jaguar XJ (X351) 5.0 V8
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Alfa Romeo Giulia (952) Quadrifoglio 2.9 V6 vs Jaguar XJ (X351) · Facelift 2015 5.0 V8 - car comparison - FastVsFaster