Car comparison

Porsche 911 (997) GT3 3.6vsCadillac XLR V 4.4 i V8 32V

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

New comparison

Porsche 911 (997)

GT3 3.6

415 hp3600 ccGasolineRWDManualNaturally aspiratedCoupe2006-2009
VS

Cadillac XLR

V 4.4 i V8 32V

449 hp4371 ccGasolineRWDAutomaticSuperchargedCoupe2006-2009

Comparison overview

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

Best choices

Porsche 911 (997) GT3 3.6

  • Quickest 0-100 km/h
    4.3 s
  • Fastest top speed
    320 km/h
    199 mph Unrestricted
    310 km/h
    193 mph Restricted
  • Lightest
    1,395 kg
    3,075 lb
  • Best power-to-weight
    297 hp/t
    222 kW/t
    3.4 kg/hp
  • Lowest city consumption
    19.8 L/100 km
    11.9 mpg US
    14.3 mpg UK
  • Lowest highway consumption
    8.9 L/100 km
    26.4 mpg US
    31.7 mpg UK
  • Best overall score
    68/100
  • Best performance score
    81/100
  • Best economy score
    73/100
  • Best practicality score
    39/100

Specification comparison

Specification comparison
ModelPorsche911 (997)GT3 3.6CadillacXLRV 4.4 i V8 32V
Power
415hp309kW
449hp335kW
Torque
405Nm299lb-ft
561Nm414lb-ft
Curb weight
1,395kg3,075lb
1,730kg3,814lb
Gross weight
1,680kg3,704lb
-
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Calculated
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
62.7s99% target: 317 km/h / 197 mph
Calculated
62.3s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
4.3s
4.9s
0-200 km/h
12.0s
Calculated
16.5s
Calculated
0-60 mph
4.1s
Calculated
4.7s
Calculated
Fuel consumption
12.8L/100 km18.4mpg US22.1mpg UK
-
Fuel consumption city
19.8L/100 km11.9mpg US14.3mpg UK
21.1L/100 km11.1mpg US13.4mpg UK
Fuel consumption highway
8.9L/100 km26.4mpg US31.7mpg UK
11.3L/100 km20.8mpg US25.0mpg UK
Quarter mile
12.1s
Calculated
13.0s
Calculated
Power-to-weight
297hp/t222kW/t135hp/1000 lb
Calculated
260hp/t194kW/t118hp/1000 lb
Calculated
Torque-to-weight
290Nm/t194lb-ft/ton
Calculated
324Nm/t217lb-ft/ton
Calculated
Estimated range
703km437mi
Calculated
-
Displacement
3,600cc220cu in
4,371cc267cu in
Length
4,445mm175in
4,513mm178in
Width
1,808mm71in
1,836mm72in
Height
1,280mm50in
1,279mm50in
Wheelbase
2,355mm93in
2,685mm106in
Front track-
1,565mm62in
Rear track-
1,578mm62in
Trunk volume-
125L
Max trunk volume
105L
328L
Doors
2
2
Seats
2
2
Fuel tank
90L
68L
CO2 emissions
307g/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.

Porsche 911 (997) GT3 3.6Cadillac XLR V 4.4 i V8 32VPowerTorque
  • Porsche 911 (997) GT3 3.6: Power / Torque
  • Cadillac XLR V 4.4 i V8 32V: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche911 (997)GT3 3.67,600 rpm5,500 rpm7,850 rpm
CadillacXLRV 4.4 i V8 32V6,400 rpm3,600 rpm6,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche911 (997)GT3 3.6CadillacXLRV 4.4 i V8 32V
Acceleration checkpoints
0-60 mph
0-97 km/h
4.1 s
4.7 s
0-100 km/h
0-62 mph
4.3 s
4.9 s
0-200 km/h
0-124 mph
12.0 s
16.5 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Likely limited
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.2 s
2.2 s
330 ft
101 m
5.5 s
5.7 s
1/8 mile
201 m
8.1 s
8.5 s
1000 ft
305 m
10.3 s
10.9 s
1/4 mile
402 m
12.1 s
13.0 s
Trap speed
1/4 mile
402 m
201 km/h
125 mph
180 km/h
112 mph

Power comparison

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

Chart data table
VehicleValue
Porsche911 (997)GT3 3.6
415 hp
309 kW
CadillacXLRV 4.4 i V8 32V
449 hp
335 kW

Cadillac XLR V 4.4 i V8 32V has 34 hp more than Porsche 911 (997) GT3 3.6.

The biggest power difference is between Porsche 911 (997) GT3 3.6 and Cadillac XLR V 4.4 i V8 32V: 34 hp (25 kW).

Torque comparison

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

Chart data table
VehicleValue
Porsche911 (997)GT3 3.6
405 Nm
299 lb-ft
CadillacXLRV 4.4 i V8 32V
561 Nm
414 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Porsche911 (997)GT3 3.6
1,395 kg
3,075 lb
CadillacXLRV 4.4 i V8 32V
1,730 kg
3,814 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
Porsche911 (997)GT3 3.6
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
CadillacXLRV 4.4 i V8 32V
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
Porsche911 (997)GT3 3.64.3 s
CadillacXLRV 4.4 i V8 32V4.9 s

Although Cadillac XLR V 4.4 i V8 32V has more power, Porsche 911 (997) GT3 3.6 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Porsche 911 (997) GT3 3.6 and Cadillac XLR V 4.4 i V8 32V: 0.6 s.

Power-to-weight comparison

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

Chart data table
VehicleValue
Porsche911 (997)GT3 3.6
297 hp/t
222 kW/t
3.4 kg/hp
CadillacXLRV 4.4 i V8 32V
260 hp/t
194 kW/t
3.9 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche911 (997)GT3 3.6
415 hp
309 kW
4.3 s
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
CadillacXLRV 4.4 i V8 32V
449 hp
335 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
Porsche911 (997)GT3 3.6
Power
415 hp
309 kW
0-100 km/h4.3 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Doors/seats
2 doors
2 seats
Trunk
105 L
3.7 cu ft
Length
4,445 mm
175.0 in
Height
1,280 mm
50.4 in
CadillacXLRV 4.4 i V8 32V
Power
449 hp
335 kW
0-100 km/h4.9 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk
125 L
4.4 cu ft
Length
4,513 mm
177.7 in
Height
1,279 mm
50.4 in

Detailed score breakdown

Detailed score breakdown
VehiclePorsche911 (997)GT3 3.6CadillacXLRV 4.4 i V8 32V
Power
415 hp
309 kW
449 hp
335 kW
Torque
405 Nm
299 lb-ft
561 Nm
414 lb-ft
Acceleration
4.3 s
4.9 s
Top speed
Unrestricted
320 km/h199 mph
Restricted
310 km/h193 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,395 kg
3,075 lb
1,730 kg
3,814 lb
Fuel consumption
12.8 L/100 km
18.4 mpg US
22.1 mpg UK
-
Practicality
Doors/seats
2 doors
2 seats
Trunk
105 L
3.7 cu ft
Length
4,445 mm
175.0 in
Height
1,280 mm
50.4 in
Doors/seats
2 doors
2 seats
Trunk
125 L
4.4 cu ft
Length
4,513 mm
177.7 in
Height
1,279 mm
50.4 in
Range score
703 km
437 mi
-
CO2 score
307 g/km
-
Trunk score
105 L
3.7 cu ft
125 L
4.4 cu ft
Power-to-weight score
297 hp/t
222 kW/t
3.4 kg/hp
260 hp/t
194 kW/t
3.9 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
VehiclePorsche 911 (997) GT3 3.6
Consumption12.8 L/100 km18.4 mpg US22.1 mpg UK
Cost / 100 km22.40 LC100 km
Cost / 100 mi36.05 LC100 mi
Annual fuel used1,920 L507 US gal422 UK gal
Annual fuel cost3,360 LC/year

Head-to-head comparisons

Porsche 911 (997) GT3 3.6

  • Is 335 kg lighter
  • Is 0.6 s quicker from 0-100 km/h
  • Has 55 km/h (34 mph) higher top speed
  • Has 38 hp/t better power-to-weight

Pros

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

Cons

  • Lowest power
  • Smallest trunk

Cadillac XLR V 4.4 i V8 32V

  • Has 34 hp more
  • Has 156 Nm more
  • Has 20 L more trunk volume

Pros

  • Most powerful
  • Highest torque
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Heaviest
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 911 (997) GT3 3.6
Cadillac XLR V 4.4 i V8 32V
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2 vehicles selected

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