Car comparison

Alpina Roadster S 3.3 i 24VvsBMW M3 Convertible (E46) 3.2i 24V

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

New comparison

Alpina Roadster S

3.3 i 24V

300 hp3346 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible2003-2006
VS

BMW M3 Convertible (E46)

3.2i 24V

343 hp3246 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible2001-2006

Comparison overview

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

Best choices

Alpina Roadster S 3.3 i 24V

  • Quickest 0-100 km/h
    5.3 s
  • Fastest top speed
    265 km/h
    165 mph
  • Lightest
    1,320 kg
    2,910 lb
  • Best power-to-weight
    227 hp/t
    169 kW/t
    4.4 kg/hp
  • Lowest city consumption
    15.0 L/100 km
    15.7 mpg US
    18.8 mpg UK
  • Lowest highway consumption
    7.0 L/100 km
    33.6 mpg US
    40.4 mpg UK
  • Best performance score
    67/100

BMW M3 Convertible (E46) 3.2i 24V

  • Most powerful
    343 hp
    256 kW
  • Highest torque
    365 Nm
    269 lb-ft
  • Largest trunk
    300 L
  • Best overall score
    59/100
  • Best economy score
    74/100
  • Best practicality score
    44/100

Specification comparison

Specification comparison
ModelAlpinaRoadster S3.3 i 24VBMWM3 Convertible (E46)3.2i 24V
Power
300hp224kW
343hp256kW
Torque
362Nm267lb-ft
365Nm269lb-ft
Curb weight
1,320kg2,910lb
1,655kg3,649lb
Gross weight
1,620kg3,571lb
2,100kg4,630lb
Top speed
265 km/h
165 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
66.7s99% target: 262 km/h / 163 mph
Calculated
76.2s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
5.3s
5.5s
0-200 km/h
17.8s
Calculated
20.0s
Calculated
0-60 mph
5.0s
Calculated
5.2s
Calculated
Fuel consumption-
12.1L/100 km19.4mpg US23.3mpg UK
Fuel consumption city
15L/100 km15.7mpg US18.8mpg UK
17.9L/100 km13.1mpg US15.8mpg UK
Fuel consumption highway
7L/100 km33.6mpg US40.4mpg UK
8.8L/100 km26.7mpg US32.1mpg UK
Quarter mile
13.4s
Calculated
13.6s
Calculated
Power-to-weight
227hp/t169kW/t103hp/1000 lb
Calculated
207hp/t155kW/t94hp/1000 lb
Calculated
Torque-to-weight
274Nm/t183lb-ft/ton
Calculated
221Nm/t148lb-ft/ton
Calculated
Estimated range-
521km324mi
Calculated
Displacement
3,346cc204cu in
3,246cc198cu in
Length
4,090mm161in
4,492mm177in
Width
1,780mm70in
1,780mm70in
Height
1,300mm51in
1,363mm54in
Wheelbase
2,500mm98in
2,731mm108in
Front track
1,470mm58in
1,508mm59in
Rear track
1,520mm60in
1,525mm60in
Trunk volume
240L
300L
Max trunk volume
260L
-
Doors
2
2
Seats
2
4
Fuel tank
55L
63L

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 Roadster S 3.3 i 24VBMW M3 Convertible (E46) 3.2i 24VPowerTorque
  • Alpina Roadster S 3.3 i 24V: Power / Torque
  • BMW M3 Convertible (E46) 3.2i 24V: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AlpinaRoadster S3.3 i 24V6,300 rpm4,800 rpm6,550 rpm
BMWM3 Convertible (E46)3.2i 24V7,900 rpm4,900 rpm8,150 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAlpinaRoadster S3.3 i 24VBMWM3 Convertible (E46)3.2i 24V
Acceleration checkpoints
0-60 mph
0-97 km/h
5.0 s
5.2 s
0-100 km/h
0-62 mph
5.3 s
5.5 s
0-200 km/h
0-124 mph
17.8 s
20.0 s
Top speed
265 km/h
165 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.3 s
2.2 s
330 ft
101 m
5.9 s
5.9 s
1/8 mile
201 m
8.8 s
8.9 s
1000 ft
305 m
11.3 s
11.5 s
1/4 mile
402 m
13.4 s
13.6 s
Trap speed
1/4 mile
402 m
176 km/h
109 mph
170 km/h
105 mph

Power comparison

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

Chart data table
VehicleValue
AlpinaRoadster S3.3 i 24V
300 hp
224 kW
BMWM3 Convertible (E46)3.2i 24V
343 hp
256 kW

BMW M3 Convertible (E46) 3.2i 24V has 43 hp more than Alpina Roadster S 3.3 i 24V.

The biggest power difference is between Alpina Roadster S 3.3 i 24V and BMW M3 Convertible (E46) 3.2i 24V: 43 hp (32 kW).

Torque comparison

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

Chart data table
VehicleValue
AlpinaRoadster S3.3 i 24V
362 Nm
267 lb-ft
BMWM3 Convertible (E46)3.2i 24V
365 Nm
269 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AlpinaRoadster S3.3 i 24V
1,320 kg
2,910 lb
BMWM3 Convertible (E46)3.2i 24V
1,655 kg
3,649 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
AlpinaRoadster S3.3 i 24V
265 km/h
165 mph
BMWM3 Convertible (E46)3.2i 24V
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
AlpinaRoadster S3.3 i 24V5.3 s
BMWM3 Convertible (E46)3.2i 24V5.5 s

Although BMW M3 Convertible (E46) 3.2i 24V has more power, Alpina Roadster S 3.3 i 24V is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Alpina Roadster S 3.3 i 24V and BMW M3 Convertible (E46) 3.2i 24V: 0.2 s.

Power-to-weight comparison

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

Chart data table
VehicleValue
AlpinaRoadster S3.3 i 24V
227 hp/t
169 kW/t
4.4 kg/hp
BMWM3 Convertible (E46)3.2i 24V
207 hp/t
155 kW/t
4.8 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AlpinaRoadster S3.3 i 24V
300 hp
224 kW
5.3 s
265 km/h
165 mph
BMWM3 Convertible (E46)3.2i 24V
343 hp
256 kW
5.5 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
AlpinaRoadster S3.3 i 24V
Power
300 hp
224 kW
0-100 km/h5.3 s
Top speed
265 km/h
165 mph
Doors/seats
2 doors
2 seats
Trunk
240 L
8.5 cu ft
Length
4,090 mm
161.0 in
Height
1,300 mm
51.2 in
BMWM3 Convertible (E46)3.2i 24V
Power
343 hp
256 kW
0-100 km/h5.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,492 mm
176.9 in
Height
1,363 mm
53.7 in

Detailed score breakdown

Detailed score breakdown
VehicleAlpinaRoadster S3.3 i 24VBMWM3 Convertible (E46)3.2i 24V
Power
300 hp
224 kW
343 hp
256 kW
Torque
362 Nm
267 lb-ft
365 Nm
269 lb-ft
Acceleration
5.3 s
5.5 s
Top speed
265 km/h
165 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,320 kg
2,910 lb
1,655 kg
3,649 lb
Fuel consumption
-
12.1 L/100 km
19.4 mpg US
23.3 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
240 L
8.5 cu ft
Length
4,090 mm
161.0 in
Height
1,300 mm
51.2 in
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,492 mm
176.9 in
Height
1,363 mm
53.7 in
Range score
-
521 km
324 mi
Trunk score
240 L
8.5 cu ft
300 L
10.6 cu ft
Power-to-weight score
227 hp/t
169 kW/t
4.4 kg/hp
207 hp/t
155 kW/t
4.8 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 M3 Convertible (E46) 3.2i 24V
Consumption12.1 L/100 km19.4 mpg US23.3 mpg UK
Cost / 100 km21.18 LC100 km
Cost / 100 mi34.08 LC100 mi
Annual fuel used1,815 L479 US gal399 UK gal
Annual fuel cost3,176 LC/year

Head-to-head comparisons

Alpina Roadster S 3.3 i 24V

  • Is 335 kg lighter
  • Is 0.2 s quicker from 0-100 km/h
  • Has 5 km/h (3 mph) higher top speed
  • Has 20 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

BMW M3 Convertible (E46) 3.2i 24V

  • Has 43 hp more
  • Has 3 Nm more
  • Has 60 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
Alpina Roadster S 3.3 i 24V
BMW M3 Convertible (E46) 3.2i 24V
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