Car comparison

Alfa Romeo 8C Spider 4.7 V8vsWiesmann Roadster MF4 S 4.0 V8

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

New comparison

Alfa Romeo 8C Spider

4.7 V8

450 hp4691 ccGasolineRWDManualNaturally aspiratedRoadster2008-2010
VS

Wiesmann Roadster MF4

S 4.0 V8

420 hp3999 ccGasolineRWDAutomaticNaturally aspiratedRoadster2009-2014

Comparison overview

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

Best choices

Alfa Romeo 8C Spider 4.7 V8

  • Quickest 0-100 km/h
    4.4 s
  • Fastest top speed
    300 km/h
    186 mph Unrestricted
    290 km/h
    180 mph Restricted
  • Most powerful
    450 hp
    336 kW
  • Highest torque
    480 Nm
    354 lb-ft
  • Best overall score
    65/100
  • Best performance score
    80/100
  • Best practicality score
    32/100

Wiesmann Roadster MF4 S 4.0 V8

  • Lightest
    1,390 kg
    3,064 lb
  • Best power-to-weight
    302 hp/t
    225 kW/t
    3.3 kg/hp
  • Lowest combined fuel consumption
    12.2 L/100 km
    19.3 mpg US
    23.2 mpg UK
  • Lowest CO2 emissions
    275 g/km
  • Best estimated range
    574 km
    357 mi
  • Best economy score
    74/100

Specification comparison

Specification comparison
ModelAlfa Romeo8C Spider4.7 V8WiesmannRoadster MF4S 4.0 V8
Power
450hp336kW
420hp313kW
Torque
480Nm354lb-ft
400Nm295lb-ft
Curb weight
1,675kg3,693lb
1,390kg3,064lb
Gross weight
1,855kg4,090lb
-
Top speed
Unrestricted
300 km/h186 mph
Restricted
290 km/h180 mph
Calculated
293 km/h
182 mph
To 99% top speed
67.0s99% target: 297 km/h / 185 mph
Calculated
57.1s99% target: 290 km/h / 180 mph
Calculated
0-100 km/h
4.4s
4.4s
0-200 km/h
13.5s
Calculated
13.0s
Calculated
0-60 mph
4.2s
Calculated
4.2s
Calculated
Fuel consumption
15.8L/100 km14.9mpg US17.9mpg UK
12.2L/100 km19.3mpg US23.2mpg UK
Fuel consumption city-
17.9L/100 km13.1mpg US15.8mpg UK
Fuel consumption highway-
9L/100 km26.1mpg US31.4mpg UK
Quarter mile
12.3s
Calculated
12.3s
Calculated
Power-to-weight
269hp/t200kW/t122hp/1000 lb
Calculated
302hp/t225kW/t137hp/1000 lb
Calculated
Torque-to-weight
287Nm/t192lb-ft/ton
Calculated
288Nm/t193lb-ft/ton
Calculated
Estimated range
557km346mi
Calculated
574km357mi
Calculated
Displacement
4,691cc286cu in
3,999cc244cu in
Length
4,381mm172in
4,230mm167in
Width
1,892mm74in
1,880mm74in
Height
1,366mm54in
1,190mm47in
Wheelbase
2,645mm104in
2,507mm99in
Front track
1,590mm63in
-
Rear track
1,589mm63in
-
Ground clearance
140mm6in
-
Doors
2
2
Seats
2
2
Fuel tank
88L
70L
CO2 emissions
377g/km
275g/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 8C Spider 4.7 V8Wiesmann Roadster MF4 S 4.0 V8PowerTorque
  • Alfa Romeo 8C Spider 4.7 V8: Power / Torque
  • Wiesmann Roadster MF4 S 4.0 V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Alfa Romeo8C Spider4.7 V87,000 rpm4,750 rpm7,500 rpm
WiesmannRoadster MF4S 4.0 V88,300 rpm3,900 rpm8,550 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAlfa Romeo8C Spider4.7 V8WiesmannRoadster MF4S 4.0 V8
Acceleration checkpoints
0-60 mph
0-97 km/h
4.2 s
4.2 s
0-100 km/h
0-62 mph
4.4 s
4.4 s
0-200 km/h
0-124 mph
13.5 s
13.0 s
Top speed
Unrestricted
300 km/h186 mph
Restricted
290 km/h180 mph
Likely limited
293 km/h
182 mph
Drag race simulation
60 ft
18 m
2.1 s
2.2 s
330 ft
101 m
5.5 s
5.5 s
1/8 mile
201 m
8.1 s
8.1 s
1000 ft
305 m
10.4 s
10.4 s
1/4 mile
402 m
12.3 s
12.3 s
Trap speed
1/4 mile
402 m
192 km/h
119 mph
195 km/h
121 mph

Power comparison

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

Chart data table
VehicleValue
Alfa Romeo8C Spider4.7 V8
450 hp
336 kW
WiesmannRoadster MF4S 4.0 V8
420 hp
313 kW

Alfa Romeo 8C Spider 4.7 V8 has 30 hp more than Wiesmann Roadster MF4 S 4.0 V8.

The biggest power difference is between Wiesmann Roadster MF4 S 4.0 V8 and Alfa Romeo 8C Spider 4.7 V8: 30 hp (22 kW).

Torque comparison

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

Chart data table
VehicleValue
Alfa Romeo8C Spider4.7 V8
480 Nm
354 lb-ft
WiesmannRoadster MF4S 4.0 V8
400 Nm
295 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Alfa Romeo8C Spider4.7 V8
1,675 kg
3,693 lb
WiesmannRoadster MF4S 4.0 V8
1,390 kg
3,064 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 Romeo8C Spider4.7 V8
Unrestricted
300 km/h186 mph
Restricted
290 km/h180 mph
WiesmannRoadster MF4S 4.0 V8
293 km/h
182 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
Alfa Romeo8C Spider4.7 V84.4 s
WiesmannRoadster MF4S 4.0 V84.4 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 Romeo8C Spider4.7 V8
15.8 L/100 km
14.9 mpg US
17.9 mpg UK
WiesmannRoadster MF4S 4.0 V8
12.2 L/100 km
19.3 mpg US
23.2 mpg UK

The biggest fuel consumption difference is between Wiesmann Roadster MF4 S 4.0 V8 and Alfa Romeo 8C Spider 4.7 V8: 3.6 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 Romeo8C Spider4.7 V8
269 hp/t
200 kW/t
3.7 kg/hp
WiesmannRoadster MF4S 4.0 V8
302 hp/t
225 kW/t
3.3 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Alfa Romeo8C Spider4.7 V8
557 km
346 mi
WiesmannRoadster MF4S 4.0 V8
574 km
357 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Alfa Romeo8C Spider4.7 V8
450 hp
336 kW
4.4 s
Unrestricted
300 km/h186 mph
Restricted
290 km/h180 mph
WiesmannRoadster MF4S 4.0 V8
420 hp
313 kW
4.4 s
293 km/h
182 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 Romeo8C Spider4.7 V8
Power
450 hp
336 kW
0-100 km/h4.4 s
Top speed
Unrestricted
300 km/h186 mph
Restricted
290 km/h180 mph
Doors/seats
2 doors
2 seats
Trunk-
Length
4,381 mm
172.5 in
Height
1,366 mm
53.8 in
WiesmannRoadster MF4S 4.0 V8
Power
420 hp
313 kW
0-100 km/h4.4 s
Top speed
293 km/h
182 mph
Doors/seats
2 doors
2 seats
Trunk-
Length
4,230 mm
166.5 in
Height
1,190 mm
46.9 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 Romeo8C Spider4.7 V8
Power
450 hp
336 kW
0-100 km/h4.4 s
Top speed
Unrestricted
300 km/h186 mph
Restricted
290 km/h180 mph
15.8 L/100 km
14.9 mpg US
17.9 mpg UK
WiesmannRoadster MF4S 4.0 V8
Power
420 hp
313 kW
0-100 km/h4.4 s
Top speed
293 km/h
182 mph
12.2 L/100 km
19.3 mpg US
23.2 mpg UK

Wiesmann Roadster MF4 S 4.0 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
Alfa Romeo8C Spider4.7 V8
15.8 L/100 km
14.9 mpg US
17.9 mpg UK
4.4 s
WiesmannRoadster MF4S 4.0 V8
12.2 L/100 km
19.3 mpg US
23.2 mpg UK
4.4 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 Romeo8C Spider4.7 V8
269 hp/t
200 kW/t
3.7 kg/hp
15.8 L/100 km
14.9 mpg US
17.9 mpg UK
WiesmannRoadster MF4S 4.0 V8
302 hp/t
225 kW/t
3.3 kg/hp
12.2 L/100 km
19.3 mpg US
23.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAlfa Romeo8C Spider4.7 V8WiesmannRoadster MF4S 4.0 V8
Power
450 hp
336 kW
420 hp
313 kW
Torque
480 Nm
354 lb-ft
400 Nm
295 lb-ft
Acceleration
4.4 s
4.4 s
Top speed
Unrestricted
300 km/h186 mph
Restricted
290 km/h180 mph
293 km/h
182 mph
Lightness
1,675 kg
3,693 lb
1,390 kg
3,064 lb
Fuel consumption
15.8 L/100 km
14.9 mpg US
17.9 mpg UK
12.2 L/100 km
19.3 mpg US
23.2 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk-
Length
4,381 mm
172.5 in
Height
1,366 mm
53.8 in
Doors/seats
2 doors
2 seats
Trunk-
Length
4,230 mm
166.5 in
Height
1,190 mm
46.9 in
Range score
557 km
346 mi
574 km
357 mi
CO2 score
377 g/km
275 g/km
Power-to-weight score
269 hp/t
200 kW/t
3.7 kg/hp
302 hp/t
225 kW/t
3.3 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 8C Spider 4.7 V8Wiesmann Roadster MF4 S 4.0 V8
Consumption15.8 L/100 km14.9 mpg US17.9 mpg UK12.2 L/100 km19.3 mpg US23.2 mpg UK
Cost / 100 km27.65 LC100 km21.35 LC100 km
Cost / 100 mi44.50 LC100 mi34.36 LC100 mi
Annual fuel used2,370 L626 US gal521 UK gal1,830 L483 US gal403 UK gal
Annual fuel cost4,148 LC/year3,203 LC/year

Head-to-head comparisons

Alfa Romeo 8C Spider 4.7 V8

  • Has 30 hp more
  • Has 80 Nm more
  • Has 7 km/h (4 mph) higher top speed

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Highest CO2 emissions

Wiesmann Roadster MF4 S 4.0 V8

  • Is 285 kg lighter
  • Uses 3.6 L/100 km less fuel
  • Has 34 hp/t better power-to-weight
  • Has 17 km (10 mi) more estimated range
  • Emits 102 g/km less CO2

Pros

  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range

Cons

  • Lowest power
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Alfa Romeo 8C Spider 4.7 V8
Wiesmann Roadster MF4 S 4.0 V8
Compare selected cars
2 vehicles selected

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