Car comparison

Wiesmann Roadster MF4 4.4 V8vsMercedes-Benz SLK (R171) · Facelift 2008 AMG SLK 55 V8

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

New comparison

Wiesmann Roadster MF4

4.4 V8

407 hp4395 ccGasolineRWDAutomaticTwin-turboRoadster2009-2014

Mercedes-Benz SLK (R171) · Facelift 2008

AMG SLK 55 V8

360 hp5439 ccGasolineRWDAutomaticNaturally aspiratedRoadster2008-2011

Comparison overview

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

Wiesmann Roadster MF4 4.4 V8

Quickest 0-100 km/h
4.6 s
Fastest top speed
291 km/h
181 mph
Most powerful
407 hp
304 kW
Highest torque
600 Nm
443 lb-ft
Lightest
1,455 kg
3,208 lb
Best power-to-weight
280 hp/t
209 kW/t
3.6 kg/hp
Lowest city consumption
17.2 L/100 km
13.7 mpg US
16.4 mpg UK
Best overall score
65/100
Best performance score
81/100
Best practicality score
31/100

Mercedes-Benz SLK (R171) Facelift 2008 AMG SLK 55 V8

Lowest combined fuel consumption
12.0 L/100 km
19.6 mpg US
23.5 mpg UK
Lowest highway consumption
8.8 L/100 km
26.7 mpg US
32.1 mpg UK
Best estimated range
583 km
362 mi
Best economy score
75/100

Specification comparison

Specification comparison
Model	WiesmannRoadster MF44.4 V8	Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8
Power	407hp304kW	360hp268kW
Torque	600Nm443lb-ft	510Nm376lb-ft
Curb weight	1,455kg3,208lb	1,500kg3,307lb
Gross weight	-	1,850kg4,079lb
Top speed	291 km/h 181 mph	Unrestricted 270 km/h168 mph Restricted 250 km/h155 mph Calculated
To 99% top speed	61.2s99% target: 288 km/h / 179 mph Calculated	61.9s99% target: 267 km/h / 166 mph Calculated
0-100 km/h	4.6s	4.9s
0-200 km/h	13.8s Calculated	16.0s Calculated
0-60 mph	4.4s Calculated	4.7s Calculated
Fuel consumption	12.3L/100 km19.1mpg US23.0mpg UK	12L/100 km19.6mpg US23.5mpg UK
Fuel consumption city	17.2L/100 km13.7mpg US16.4mpg UK	17.7L/100 km13.3mpg US16.0mpg UK
Fuel consumption highway	9.4L/100 km25mpg US30.1mpg UK	8.8L/100 km26.7mpg US32.1mpg UK
Quarter mile	12.5s Calculated	12.9s Calculated
Power-to-weight	280hp/t209kW/t127hp/1000 lb Calculated	240hp/t179kW/t109hp/1000 lb Calculated
Torque-to-weight	412Nm/t276lb-ft/ton Calculated	340Nm/t227lb-ft/ton Calculated
Estimated range	569km354mi Calculated	583km362mi Calculated
Displacement	4,395cc268cu in	5,439cc332cu in
Length	4,230mm167in	4,103mm162in
Width	1,880mm74in	1,788mm70in
Height	1,190mm47in	1,271mm50in
Wheelbase	2,507mm99in	2,430mm96in
Front track	-	1,524mm60in
Rear track	-	1,549mm61in
Trunk volume	-	208L
Doors	2	2
Seats	2	2
Fuel tank	70L	70L
CO2 emissions	285g/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.

Wiesmann Roadster MF4 4.4 V8Mercedes-Benz SLK (R171) Facelift 2008 AMG SLK 55 V8PowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
WiesmannRoadster MF44.4 V8	5,500-6,400 rpm	1,750-4,500 rpm	6,650 rpm
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8	5,750 rpm	4,000 rpm	6,000 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	WiesmannRoadster MF44.4 V8	Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8
	Acceleration checkpoints
0-60 mph 0-97 km/h	4.4 s	4.7 s
0-100 km/h 0-62 mph	4.6 s	4.9 s
0-200 km/h 0-124 mph	13.8 s	16.0 s
Top speed	291 km/h 181 mph	Unrestricted 270 km/h168 mph Restricted 250 km/h155 mph Limited
	Drag race simulation
60 ft 18 m	2.2 s	2.2 s
330 ft 101 m	5.6 s	5.7 s
1/8 mile 201 m	8.3 s	8.5 s
1000 ft 305 m	10.6 s	10.9 s
1/4 mile 402 m	12.5 s	12.9 s
Trap speed 1/4 mile 402 m	190 km/h 118 mph	181 km/h 113 mph

Power comparison

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

Chart data table
Vehicle	Value
WiesmannRoadster MF44.4 V8	407 hp 304 kW
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8	360 hp 268 kW

Wiesmann Roadster MF4 4.4 V8 has 47 hp more than Mercedes-Benz SLK (R171) Facelift 2008 AMG SLK 55 V8.

The biggest power difference is between Mercedes-Benz SLK (R171) Facelift 2008 AMG SLK 55 V8 and Wiesmann Roadster MF4 4.4 V8: 47 hp (35 kW).

Torque comparison

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

Chart data table
Vehicle	Value
WiesmannRoadster MF44.4 V8	600 Nm 443 lb-ft
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8	510 Nm 376 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
WiesmannRoadster MF44.4 V8	1,455 kg 3,208 lb
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8	1,500 kg 3,307 lb

Top speed without limiter comparison

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

Chart data table
Vehicle	Value
WiesmannRoadster MF44.4 V8	291 km/h 181 mph
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8	Unrestricted 270 km/h168 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
Vehicle	Value
WiesmannRoadster MF44.4 V8	4.6 s
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8	4.9 s

The biggest 0-100 km/h difference is between Wiesmann Roadster MF4 4.4 V8 and Mercedes-Benz SLK (R171) Facelift 2008 AMG SLK 55 V8: 0.3 s.

Fuel consumption comparison

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

Chart data table
Vehicle	Value
WiesmannRoadster MF44.4 V8	12.3 L/100 km 19.1 mpg US 23.0 mpg UK
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8	12.0 L/100 km 19.6 mpg US 23.5 mpg UK

Power-to-weight comparison

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

Chart data table
Vehicle	Value
WiesmannRoadster MF44.4 V8	280 hp/t 209 kW/t 3.6 kg/hp
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8	240 hp/t 179 kW/t 4.2 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
WiesmannRoadster MF44.4 V8	569 km 354 mi
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8	583 km 362 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
WiesmannRoadster MF44.4 V8	407 hp 304 kW	4.6 s	291 km/h 181 mph
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8	360 hp 268 kW	4.9 s	Unrestricted 270 km/h168 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.

Vehicle

Performance score

Practicality score

WiesmannRoadster MF44.4 V8

Power	407 hp 304 kW
0-100 km/h	4.6 s
Top speed 291 km/h 181 mph

Doors/seats	2 doors 2 seats
Trunk	-
Length	4,230 mm 166.5 in
Height	1,190 mm 46.9 in

Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8

Power	360 hp 268 kW
0-100 km/h	4.9 s
Top speed Unrestricted 270 km/h168 mph Restricted 250 km/h155 mph

Doors/seats	2 doors 2 seats
Trunk	208 L 7.3 cu ft
Length	4,103 mm 161.5 in
Height	1,271 mm 50.0 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Vehicle

Performance score

Fuel economy score

WiesmannRoadster MF44.4 V8

Power	407 hp 304 kW
0-100 km/h	4.6 s
Top speed 291 km/h 181 mph

12.3 L/100 km

19.1 mpg US

23.0 mpg UK

Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8

Power	360 hp 268 kW
0-100 km/h	4.9 s
Top speed Unrestricted 270 km/h168 mph Restricted 250 km/h155 mph

12.0 L/100 km

19.6 mpg US

23.5 mpg UK

Wiesmann Roadster MF4 4.4 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
Vehicle	Fuel consumption, L/100 km	0-100 km/h, s
WiesmannRoadster MF44.4 V8	12.3 L/100 km 19.1 mpg US 23.0 mpg UK	4.6 s
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8	12.0 L/100 km 19.6 mpg US 23.5 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
Vehicle	Power-to-weight, hp/t	Fuel consumption, L/100 km
WiesmannRoadster MF44.4 V8	280 hp/t 209 kW/t 3.6 kg/hp	12.3 L/100 km 19.1 mpg US 23.0 mpg UK
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8	240 hp/t 179 kW/t 4.2 kg/hp	12.0 L/100 km 19.6 mpg US 23.5 mpg UK

Detailed score breakdown

Vehicle

WiesmannRoadster MF44.4 V8

Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8

Power

407 hp

304 kW

360 hp

268 kW

Torque

600 Nm

443 lb-ft

510 Nm

376 lb-ft

Acceleration

4.6 s

4.9 s

Top speed

291 km/h

181 mph

Unrestricted

270 km/h168 mph

Restricted

250 km/h155 mph

Lightness

1,455 kg

3,208 lb

1,500 kg

3,307 lb

Fuel consumption

12.3 L/100 km

19.1 mpg US

23.0 mpg UK

12.0 L/100 km

19.6 mpg US

23.5 mpg UK

Practicality

Doors/seats	2 doors 2 seats
Trunk	-
Length	4,230 mm 166.5 in
Height	1,190 mm 46.9 in

Doors/seats	2 doors 2 seats
Trunk	208 L 7.3 cu ft
Length	4,103 mm 161.5 in
Height	1,271 mm 50.0 in

Range score

569 km

354 mi

583 km

362 mi

CO2 score

285 g/km

Trunk score

208 L

7.3 cu ft

Power-to-weight score

280 hp/t

209 kW/t

3.6 kg/hp

240 hp/t

179 kW/t

4.2 kg/hp

Overall

Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Average annual distanceDistance unitFuel price in your local currencyPrice unit

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
Vehicle	Wiesmann Roadster MF4 4.4 V8	Mercedes-Benz SLK (R171) Facelift 2008 AMG SLK 55 V8
Consumption	12.3 L/100 km19.1 mpg US23 mpg UK	12 L/100 km19.6 mpg US23.5 mpg UK
Cost / 100 km	21.53 LC100 km	21.00 LC100 km
Cost / 100 mi	34.64 LC100 mi	33.80 LC100 mi
Annual fuel used	1,845 L487 US gal406 UK gal	1,800 L476 US gal396 UK gal
Annual fuel cost	3,229 LC/year	3,150 LC/year