Car comparison

BMW 6 Series (E63) 630ivsAlfa Romeo Brera 3.2 JTS

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

New comparison

BMW 6 Series (E63)

630i

258 hp2996 ccGasolineRWDManualNaturally aspiratedCoupe2004-2007
VS

Alfa Romeo Brera

3.2 JTS

260 hp3195 ccGasolineAWDAutomaticNaturally aspiratedCoupe2005-2010

Comparison overview

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

Best choices

BMW 6 Series (E63) 630i

  • Quickest 0-100 km/h
    6.5 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Lightest
    1,490 kg
    3,285 lb
  • Best power-to-weight
    173 hp/t
    129 kW/t
    5.8 kg/hp
  • Lowest combined fuel consumption
    9.0 L/100 km
    26.1 mpg US
    31.4 mpg UK
  • Lowest city consumption
    13.1 L/100 km
    18.0 mpg US
    21.6 mpg UK
  • Lowest highway consumption
    6.7 L/100 km
    35.1 mpg US
    42.2 mpg UK
  • Best estimated range
    778 km
    483 mi
  • Largest trunk
    450 L
  • Best overall score
    57/100
  • Best performance score
    59/100
  • Best economy score
    83/100
  • Best practicality score
    53/100

Specification comparison

Specification comparison
ModelBMW6 Series (E63)630iAlfa RomeoBrera3.2 JTS
Power
258hp192kW
260hp194kW
Torque
300Nm221lb-ft
322Nm237lb-ft
Curb weight
1,490kg3,285lb
1,720kg3,792lb
Gross weight
1,940kg4,277lb
2,050kg4,519lb
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
89.2s99% target: 257 km/h / 160 mph
Calculated
97.2s99% target: 248 km/h / 154 mph
Calculated
0-100 km/h
6.5s
7.0s
0-200 km/h
23.5s
Calculated
27.6s
Calculated
0-60 mph
6.2s
Calculated
6.6s
Calculated
Fuel consumption
9L/100 km26.1mpg US31.4mpg UK
12.1L/100 km19.4mpg US23.3mpg UK
Fuel consumption city
13.1L/100 km18mpg US21.6mpg UK
18.2L/100 km12.9mpg US15.5mpg UK
Fuel consumption highway
6.7L/100 km35.1mpg US42.2mpg UK
8.5L/100 km27.7mpg US33.2mpg UK
Quarter mile
14.5s
Calculated
15.0s
Calculated
Power-to-weight
173hp/t129kW/t79hp/1000 lb
Calculated
151hp/t113kW/t69hp/1000 lb
Calculated
Torque-to-weight
201Nm/t135lb-ft/ton
Calculated
187Nm/t125lb-ft/ton
Calculated
Estimated range
778km483mi
Calculated
579km359mi
Calculated
Displacement
2,996cc183cu in
3,195cc195cu in
Length
4,820mm190in
4,413mm174in
Width
1,855mm73in
1,830mm72in
Height
1,373mm54in
1,372mm54in
Wheelbase
2,780mm109in
2,525mm99in
Front track
1,558mm61in
1,579mm62in
Rear track
1,596mm63in
1,559mm61in
Trunk volume
450L
300L
Max trunk volume-
610L
Doors
2
2
Seats
4
4
Fuel tank
70L
70L
CO2 emissions-
284g/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.

BMW 6 Series (E63) 630iAlfa Romeo Brera 3.2 JTSPowerTorque
  • BMW 6 Series (E63) 630i: Power / Torque
  • Alfa Romeo Brera 3.2 JTS: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW6 Series (E63)630i6,600 rpm2,500 rpm6,850 rpm
Alfa RomeoBrera3.2 JTS6,200 rpm4,500 rpm6,450 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW6 Series (E63)630iAlfa RomeoBrera3.2 JTS
Acceleration checkpoints
0-60 mph
0-97 km/h
6.2 s
6.6 s
0-100 km/h
0-62 mph
6.5 s
7.0 s
0-200 km/h
0-124 mph
23.5 s
27.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
Likely limited
Drag race simulation
60 ft
18 m
2.4 s
2.4 s
330 ft
101 m
6.4 s
6.5 s
1/8 mile
201 m
9.5 s
9.8 s
1000 ft
305 m
12.3 s
12.6 s
1/4 mile
402 m
14.5 s
15.0 s
Trap speed
1/4 mile
402 m
161 km/h
100 mph
155 km/h
96 mph

Power comparison

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

Chart data table
VehicleValue
BMW6 Series (E63)630i
258 hp
192 kW
Alfa RomeoBrera3.2 JTS
260 hp
194 kW

Alfa Romeo Brera 3.2 JTS has 2 hp more than BMW 6 Series (E63) 630i.

The biggest power difference is between BMW 6 Series (E63) 630i and Alfa Romeo Brera 3.2 JTS: 2 hp (1 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW6 Series (E63)630i
300 Nm
221 lb-ft
Alfa RomeoBrera3.2 JTS
322 Nm
237 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW6 Series (E63)630i
1,490 kg
3,285 lb
Alfa RomeoBrera3.2 JTS
1,720 kg
3,792 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
BMW6 Series (E63)630i
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Alfa RomeoBrera3.2 JTS
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
BMW6 Series (E63)630i6.5 s
Alfa RomeoBrera3.2 JTS7.0 s

Although Alfa Romeo Brera 3.2 JTS has more power, BMW 6 Series (E63) 630i is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between BMW 6 Series (E63) 630i and Alfa Romeo Brera 3.2 JTS: 0.5 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
BMW6 Series (E63)630i
9.0 L/100 km
26.1 mpg US
31.4 mpg UK
Alfa RomeoBrera3.2 JTS
12.1 L/100 km
19.4 mpg US
23.3 mpg UK

The biggest fuel consumption difference is between BMW 6 Series (E63) 630i and Alfa Romeo Brera 3.2 JTS: 3.1 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
BMW6 Series (E63)630i
173 hp/t
129 kW/t
5.8 kg/hp
Alfa RomeoBrera3.2 JTS
151 hp/t
113 kW/t
6.6 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW6 Series (E63)630i
778 km
483 mi
Alfa RomeoBrera3.2 JTS
579 km
359 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW6 Series (E63)630i
258 hp
192 kW
6.5 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Alfa RomeoBrera3.2 JTS
260 hp
194 kW
7.0 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
BMW6 Series (E63)630i
Power
258 hp
192 kW
0-100 km/h6.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
450 L
15.9 cu ft
Length
4,820 mm
189.8 in
Height
1,373 mm
54.1 in
Alfa RomeoBrera3.2 JTS
Power
260 hp
194 kW
0-100 km/h7.0 s
Top speed
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,413 mm
173.7 in
Height
1,372 mm
54.0 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
BMW6 Series (E63)630i
Power
258 hp
192 kW
0-100 km/h6.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
9.0 L/100 km
26.1 mpg US
31.4 mpg UK
Alfa RomeoBrera3.2 JTS
Power
260 hp
194 kW
0-100 km/h7.0 s
Top speed
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
12.1 L/100 km
19.4 mpg US
23.3 mpg UK

BMW 6 Series (E63) 630i 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
BMW6 Series (E63)630i
9.0 L/100 km
26.1 mpg US
31.4 mpg UK
6.5 s
Alfa RomeoBrera3.2 JTS
12.1 L/100 km
19.4 mpg US
23.3 mpg UK
7.0 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
BMW6 Series (E63)630i
173 hp/t
129 kW/t
5.8 kg/hp
9.0 L/100 km
26.1 mpg US
31.4 mpg UK
Alfa RomeoBrera3.2 JTS
151 hp/t
113 kW/t
6.6 kg/hp
12.1 L/100 km
19.4 mpg US
23.3 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW6 Series (E63)630iAlfa RomeoBrera3.2 JTS
Power
258 hp
192 kW
260 hp
194 kW
Torque
300 Nm
221 lb-ft
322 Nm
237 lb-ft
Acceleration
6.5 s
7.0 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
250 km/h155 mph
Restricted
240 km/h149 mph
Lightness
1,490 kg
3,285 lb
1,720 kg
3,792 lb
Fuel consumption
9.0 L/100 km
26.1 mpg US
31.4 mpg UK
12.1 L/100 km
19.4 mpg US
23.3 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
450 L
15.9 cu ft
Length
4,820 mm
189.8 in
Height
1,373 mm
54.1 in
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,413 mm
173.7 in
Height
1,372 mm
54.0 in
Range score
778 km
483 mi
579 km
359 mi
CO2 score
-
284 g/km
Trunk score
450 L
15.9 cu ft
300 L
10.6 cu ft
Power-to-weight score
173 hp/t
129 kW/t
5.8 kg/hp
151 hp/t
113 kW/t
6.6 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
VehicleBMW 6 Series (E63) 630iAlfa Romeo Brera 3.2 JTS
Consumption9 L/100 km26.1 mpg US31.4 mpg UK12.1 L/100 km19.4 mpg US23.3 mpg UK
Cost / 100 km15.75 LC100 km21.18 LC100 km
Cost / 100 mi25.35 LC100 mi34.08 LC100 mi
Annual fuel used1,350 L357 US gal297 UK gal1,815 L479 US gal399 UK gal
Annual fuel cost2,363 LC/year3,176 LC/year

Head-to-head comparisons

BMW 6 Series (E63) 630i

  • Is 230 kg lighter
  • Is 0.5 s quicker from 0-100 km/h
  • Has 10 km/h (6 mph) higher top speed
  • Uses 3.1 L/100 km less fuel
  • Has 22 hp/t better power-to-weight
  • Has 199 km (124 mi) more estimated range
  • Has 150 L more trunk volume

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
  • Largest trunk

Cons

  • Lowest power

Alfa Romeo Brera 3.2 JTS

  • Has 2 hp more
  • Has 22 Nm more

Pros

  • Most powerful
  • Highest torque

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 6 Series (E63) 630i
Alfa Romeo Brera 3.2 JTS
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