Car comparison

Mercedes-Benz SLK (R171) · Facelift 2008 AMG SLK 55 V8vsNissan 370Z Roadster 3.7 V6

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

New comparison

Mercedes-Benz SLK (R171) · Facelift 2008

AMG SLK 55 V8

360 hp5439 ccGasolineRWDAutomaticNaturally aspiratedRoadster2008-2011
VS

Nissan 370Z Roadster

3.7 V6

328 hp3696 ccGasolineRWDManualNaturally aspiratedRoadster2009-2012

Comparison overview

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

Best choices

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

  • Quickest 0-100 km/h
    4.9 s
  • Fastest top speed
    270 km/h
    168 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    360 hp
    268 kW
  • Highest torque
    510 Nm
    376 lb-ft
  • Lightest
    1,500 kg
    3,307 lb
  • Best power-to-weight
    240 hp/t
    179 kW/t
    4.2 kg/hp
  • Largest trunk
    208 L
  • Best overall score
    59/100
  • Best performance score
    73/100
  • Best practicality score
    28/100

Nissan 370Z Roadster 3.7 V6

  • Lowest combined fuel consumption
    11.2 L/100 km
    21.0 mpg US
    25.2 mpg UK
  • Lowest city consumption
    16.2 L/100 km
    14.5 mpg US
    17.4 mpg UK
  • Lowest highway consumption
    8.3 L/100 km
    28.3 mpg US
    34.0 mpg UK
  • Best estimated range
    643 km
    399 mi
  • Best economy score
    77/100

Specification comparison

Specification comparison
ModelMercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8Nissan370Z Roadster3.7 V6
Power
360hp268kW
328hp245kW
Torque
510Nm376lb-ft
363Nm268lb-ft
Curb weight
1,500kg3,307lb
1,524kg3,360lb
Gross weight
1,850kg4,079lb
1,885kg4,156lb
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
61.9s99% target: 267 km/h / 166 mph
Calculated
74.9s99% target: 267 km/h / 166 mph
Calculated
0-100 km/h
4.9s
5.5s
0-200 km/h
16.0s
Calculated
18.6s
Calculated
0-60 mph
4.7s
Calculated
5.2s
Calculated
Fuel consumption
12L/100 km19.6mpg US23.5mpg UK
11.2L/100 km21mpg US25.2mpg UK
Fuel consumption city
17.7L/100 km13.3mpg US16.0mpg UK
16.2L/100 km14.5mpg US17.4mpg UK
Fuel consumption highway
8.8L/100 km26.7mpg US32.1mpg UK
8.3L/100 km28.3mpg US34.0mpg UK
Quarter mile
12.9s
Calculated
13.6s
Calculated
Power-to-weight
240hp/t179kW/t109hp/1000 lb
Calculated
215hp/t160kW/t98hp/1000 lb
Calculated
Torque-to-weight
340Nm/t227lb-ft/ton
Calculated
238Nm/t159lb-ft/ton
Calculated
Estimated range
583km362mi
Calculated
643km399mi
Calculated
Displacement
5,439cc332cu in
3,696cc226cu in
Length
4,103mm162in
4,250mm167in
Width
1,788mm70in
1,845mm73in
Height
1,271mm50in
1,325mm52in
Wheelbase
2,430mm96in
2,550mm100in
Front track
1,524mm60in
1,550mm61in
Rear track
1,549mm61in
1,595mm63in
Trunk volume
208L
140L
Doors
2
2
Seats
2
2
Fuel tank
70L
72L

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.

Mercedes-Benz SLK (R171) Facelift 2008 AMG SLK 55 V8Nissan 370Z Roadster 3.7 V6PowerTorque
  • Mercedes-Benz SLK (R171) Facelift 2008 AMG SLK 55 V8: Power / Torque
  • Nissan 370Z Roadster 3.7 V6: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V85,750 rpm4,000 rpm6,000 rpm
Nissan370Z Roadster3.7 V67,000 rpm5,200 rpm7,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8Nissan370Z Roadster3.7 V6
Acceleration checkpoints
0-60 mph
0-97 km/h
4.7 s
5.2 s
0-100 km/h
0-62 mph
4.9 s
5.5 s
0-200 km/h
0-124 mph
16.0 s
18.6 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Limited
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Limited
Drag race simulation
60 ft
18 m
2.2 s
2.3 s
330 ft
101 m
5.7 s
6.0 s
1/8 mile
201 m
8.5 s
8.9 s
1000 ft
305 m
10.9 s
11.5 s
1/4 mile
402 m
12.9 s
13.6 s
Trap speed
1/4 mile
402 m
181 km/h
113 mph
173 km/h
108 mph

Power comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8
360 hp
268 kW
Nissan370Z Roadster3.7 V6
328 hp
245 kW

Mercedes-Benz SLK (R171) Facelift 2008 AMG SLK 55 V8 has 32 hp more than Nissan 370Z Roadster 3.7 V6.

The biggest power difference is between Nissan 370Z Roadster 3.7 V6 and Mercedes-Benz SLK (R171) Facelift 2008 AMG SLK 55 V8: 32 hp (24 kW).

Torque comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8
510 Nm
376 lb-ft
Nissan370Z Roadster3.7 V6
363 Nm
268 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8
1,500 kg
3,307 lb
Nissan370Z Roadster3.7 V6
1,524 kg
3,360 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Nissan370Z Roadster3.7 V6
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
VehicleValue
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V84.9 s
Nissan370Z Roadster3.7 V65.5 s

The biggest 0-100 km/h difference is between Mercedes-Benz SLK (R171) Facelift 2008 AMG SLK 55 V8 and Nissan 370Z Roadster 3.7 V6: 0.6 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8
12.0 L/100 km
19.6 mpg US
23.5 mpg UK
Nissan370Z Roadster3.7 V6
11.2 L/100 km
21.0 mpg US
25.2 mpg UK

The biggest fuel consumption difference is between Nissan 370Z Roadster 3.7 V6 and Mercedes-Benz SLK (R171) Facelift 2008 AMG SLK 55 V8: 0.8 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
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8
240 hp/t
179 kW/t
4.2 kg/hp
Nissan370Z Roadster3.7 V6
215 hp/t
160 kW/t
4.6 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8
583 km
362 mi
Nissan370Z Roadster3.7 V6
643 km
399 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
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
Nissan370Z Roadster3.7 V6
328 hp
245 kW
5.5 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.

Chart data table
VehiclePerformance scorePracticality score
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8
Power
360 hp
268 kW
0-100 km/h4.9 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
Nissan370Z Roadster3.7 V6
Power
328 hp
245 kW
0-100 km/h5.5 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk
140 L
4.9 cu ft
Length
4,250 mm
167.3 in
Height
1,325 mm
52.2 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
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8
Power
360 hp
268 kW
0-100 km/h4.9 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
Nissan370Z Roadster3.7 V6
Power
328 hp
245 kW
0-100 km/h5.5 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
11.2 L/100 km
21.0 mpg US
25.2 mpg UK

Mercedes-Benz SLK (R171) Facelift 2008 AMG SLK 55 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
Mercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8
12.0 L/100 km
19.6 mpg US
23.5 mpg UK
4.9 s
Nissan370Z Roadster3.7 V6
11.2 L/100 km
21.0 mpg US
25.2 mpg UK
5.5 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
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
Nissan370Z Roadster3.7 V6
215 hp/t
160 kW/t
4.6 kg/hp
11.2 L/100 km
21.0 mpg US
25.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleMercedes-BenzSLK (R171)Facelift 2008AMG SLK 55 V8Nissan370Z Roadster3.7 V6
Power
360 hp
268 kW
328 hp
245 kW
Torque
510 Nm
376 lb-ft
363 Nm
268 lb-ft
Acceleration
4.9 s
5.5 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Lightness
1,500 kg
3,307 lb
1,524 kg
3,360 lb
Fuel consumption
12.0 L/100 km
19.6 mpg US
23.5 mpg UK
11.2 L/100 km
21.0 mpg US
25.2 mpg UK
Practicality
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
Doors/seats
2 doors
2 seats
Trunk
140 L
4.9 cu ft
Length
4,250 mm
167.3 in
Height
1,325 mm
52.2 in
Range score
583 km
362 mi
643 km
399 mi
Trunk score
208 L
7.3 cu ft
140 L
4.9 cu ft
Power-to-weight score
240 hp/t
179 kW/t
4.2 kg/hp
215 hp/t
160 kW/t
4.6 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
VehicleMercedes-Benz SLK (R171) Facelift 2008 AMG SLK 55 V8Nissan 370Z Roadster 3.7 V6
Consumption12 L/100 km19.6 mpg US23.5 mpg UK11.2 L/100 km21 mpg US25.2 mpg UK
Cost / 100 km21.00 LC100 km19.60 LC100 km
Cost / 100 mi33.80 LC100 mi31.54 LC100 mi
Annual fuel used1,800 L476 US gal396 UK gal1,680 L444 US gal370 UK gal
Annual fuel cost3,150 LC/year2,940 LC/year

Head-to-head comparisons

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

  • Has 32 hp more
  • Has 147 Nm more
  • Is 24 kg lighter
  • Is 0.6 s quicker from 0-100 km/h
  • Has 25 hp/t better power-to-weight
  • Has 68 L more trunk volume

Pros

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

Cons

  • Highest combined fuel consumption

Nissan 370Z Roadster 3.7 V6

  • Uses 0.8 L/100 km less fuel
  • Has 60 km (37 mi) more estimated range

Pros

  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Heaviest
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
Mercedes-Benz SLK (R171) AMG SLK 55 V8
Nissan 370Z Roadster 3.7 V6
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2 vehicles selected

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