Car comparison

Mercedes-Benz SLK (R171) SLK 350 V6vsPorsche Boxster (987) 2.7

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

New comparison

Mercedes-Benz SLK (R171)

SLK 350 V6

272 hp3498 ccGasolineRWDAutomaticNaturally aspiratedRoadster2004-2007
VS

Porsche Boxster (987)

2.7

240 hp2687 ccGasolineRWDManualNaturally aspiratedRoadster2004-2006

Comparison overview

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

Best choices

Mercedes-Benz SLK (R171) SLK 350 V6

  • Quickest 0-100 km/h
    5.5 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    272 hp
    203 kW
  • Highest torque
    350 Nm
    258 lb-ft
  • Best power-to-weight
    196 hp/t
    146 kW/t
    5.1 kg/hp
  • Best estimated range
    693 km
    431 mi
  • Largest trunk
    208 L
  • Best overall score
    53/100
  • Best performance score
    64/100
  • Best practicality score
    29/100

Porsche Boxster (987) 2.7

  • Lightest
    1,295 kg
    2,855 lb
  • Lowest combined fuel consumption
    9.6 L/100 km
    24.5 mpg US
    29.4 mpg UK
  • Lowest city consumption
    13.9 L/100 km
    16.9 mpg US
    20.3 mpg UK
  • Lowest highway consumption
    6.9 L/100 km
    34.1 mpg US
    40.9 mpg UK
  • Best economy score
    81/100

Specification comparison

Specification comparison
ModelMercedes-BenzSLK (R171)SLK 350 V6PorscheBoxster (987)2.7
Power
272hp203kW
240hp179kW
Torque
350Nm258lb-ft
270Nm199lb-ft
Curb weight
1,390kg3,064lb
1,295kg2,855lb
Gross weight
1,780kg3,924lb
1,610kg3,549lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
256 km/h
159 mph
To 99% top speed
69.2s99% target: 257 km/h / 160 mph
Calculated
91.5s99% target: 253 km/h / 157 mph
Calculated
0-100 km/h
5.5s
6.2s
0-200 km/h
19.1s
Calculated
24.0s
0-60 mph
5.2s
Calculated
5.9s
Calculated
Fuel consumption
10.1L/100 km23.3mpg US28.0mpg UK
9.6L/100 km24.5mpg US29.4mpg UK
Fuel consumption city
14.2L/100 km16.6mpg US19.9mpg UK
13.9L/100 km16.9mpg US20.3mpg UK
Fuel consumption highway
7.8L/100 km30.2mpg US36.2mpg UK
6.9L/100 km34.1mpg US40.9mpg UK
Quarter mile
13.6s
Calculated
14.3s
Calculated
Power-to-weight
196hp/t146kW/t89hp/1000 lb
Calculated
185hp/t138kW/t84hp/1000 lb
Calculated
Torque-to-weight
252Nm/t168lb-ft/ton
Calculated
208Nm/t140lb-ft/ton
Calculated
Estimated range
693km431mi
Calculated
667km414mi
Calculated
Displacement
3,498cc213cu in
2,687cc164cu in
Length
4,089mm161in
4,329mm170in
Width
1,788mm70in
1,801mm71in
Height
1,298mm51in
1,295mm51in
Wheelbase
2,430mm96in
2,415mm95in
Front track
1,526mm60in
-
Rear track
1,549mm61in
-
Ground clearance-
121mm5in
Trunk volume
208L
130L
Doors
2
2
Seats
2
2
Fuel tank
70L
64L
CO2 emissions-
229g/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.

Mercedes-Benz SLK (R171) SLK 350 V6Porsche Boxster (987) 2.7PowerTorque
  • Mercedes-Benz SLK (R171) SLK 350 V6: Power / Torque
  • Porsche Boxster (987) 2.7: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzSLK (R171)SLK 350 V66,000 rpm2,400-5,000 rpm6,250 rpm
PorscheBoxster (987)2.76,400 rpm4,700-6,000 rpm7,200 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzSLK (R171)SLK 350 V6PorscheBoxster (987)2.7
Acceleration checkpoints
0-60 mph
0-97 km/h
5.2 s
5.9 s
0-100 km/h
0-62 mph
5.5 s
6.2 s
0-200 km/h
0-124 mph
19.1 s
24.0 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
256 km/h
159 mph
Drag race simulation
60 ft
18 m
2.3 s
2.3 s
330 ft
101 m
6.0 s
6.2 s
1/8 mile
201 m
8.9 s
9.3 s
1000 ft
305 m
11.5 s
12.0 s
1/4 mile
402 m
13.6 s
14.3 s
Trap speed
1/4 mile
402 m
172 km/h
107 mph
161 km/h
100 mph

Power comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R171)SLK 350 V6
272 hp
203 kW
PorscheBoxster (987)2.7
240 hp
179 kW

Mercedes-Benz SLK (R171) SLK 350 V6 has 32 hp more than Porsche Boxster (987) 2.7.

The biggest power difference is between Porsche Boxster (987) 2.7 and Mercedes-Benz SLK (R171) SLK 350 V6: 32 hp (24 kW).

Torque comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R171)SLK 350 V6
350 Nm
258 lb-ft
PorscheBoxster (987)2.7
270 Nm
199 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R171)SLK 350 V6
1,390 kg
3,064 lb
PorscheBoxster (987)2.7
1,295 kg
2,855 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)SLK 350 V6
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
PorscheBoxster (987)2.7
256 km/h
159 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)SLK 350 V65.5 s
PorscheBoxster (987)2.76.2 s

The biggest 0-100 km/h difference is between Mercedes-Benz SLK (R171) SLK 350 V6 and Porsche Boxster (987) 2.7: 0.7 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)SLK 350 V6
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
PorscheBoxster (987)2.7
9.6 L/100 km
24.5 mpg US
29.4 mpg UK

The biggest fuel consumption difference is between Porsche Boxster (987) 2.7 and Mercedes-Benz SLK (R171) SLK 350 V6: 0.5 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)SLK 350 V6
196 hp/t
146 kW/t
5.1 kg/hp
PorscheBoxster (987)2.7
185 hp/t
138 kW/t
5.4 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R171)SLK 350 V6
693 km
431 mi
PorscheBoxster (987)2.7
667 km
414 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Mercedes-BenzSLK (R171)SLK 350 V6
272 hp
203 kW
5.5 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
PorscheBoxster (987)2.7
240 hp
179 kW
6.2 s
256 km/h
159 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)SLK 350 V6
Power
272 hp
203 kW
0-100 km/h5.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk
208 L
7.3 cu ft
Length
4,089 mm
161.0 in
Height
1,298 mm
51.1 in
PorscheBoxster (987)2.7
Power
240 hp
179 kW
0-100 km/h6.2 s
Top speed
256 km/h
159 mph
Doors/seats
2 doors
2 seats
Trunk
130 L
4.6 cu ft
Length
4,329 mm
170.4 in
Height
1,295 mm
51.0 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
Mercedes-BenzSLK (R171)SLK 350 V6
Power
272 hp
203 kW
0-100 km/h5.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
PorscheBoxster (987)2.7
Power
240 hp
179 kW
0-100 km/h6.2 s
Top speed
256 km/h
159 mph
9.6 L/100 km
24.5 mpg US
29.4 mpg UK

Mercedes-Benz SLK (R171) SLK 350 V6 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)SLK 350 V6
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
5.5 s
PorscheBoxster (987)2.7
9.6 L/100 km
24.5 mpg US
29.4 mpg UK
6.2 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)SLK 350 V6
196 hp/t
146 kW/t
5.1 kg/hp
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
PorscheBoxster (987)2.7
185 hp/t
138 kW/t
5.4 kg/hp
9.6 L/100 km
24.5 mpg US
29.4 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleMercedes-BenzSLK (R171)SLK 350 V6PorscheBoxster (987)2.7
Power
272 hp
203 kW
240 hp
179 kW
Torque
350 Nm
258 lb-ft
270 Nm
199 lb-ft
Acceleration
5.5 s
6.2 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
256 km/h
159 mph
Lightness
1,390 kg
3,064 lb
1,295 kg
2,855 lb
Fuel consumption
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
9.6 L/100 km
24.5 mpg US
29.4 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
208 L
7.3 cu ft
Length
4,089 mm
161.0 in
Height
1,298 mm
51.1 in
Doors/seats
2 doors
2 seats
Trunk
130 L
4.6 cu ft
Length
4,329 mm
170.4 in
Height
1,295 mm
51.0 in
Range score
693 km
431 mi
667 km
414 mi
CO2 score
-
229 g/km
Trunk score
208 L
7.3 cu ft
130 L
4.6 cu ft
Power-to-weight score
196 hp/t
146 kW/t
5.1 kg/hp
185 hp/t
138 kW/t
5.4 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) SLK 350 V6Porsche Boxster (987) 2.7
Consumption10.1 L/100 km23.3 mpg US28 mpg UK9.6 L/100 km24.5 mpg US29.4 mpg UK
Cost / 100 km17.68 LC100 km16.80 LC100 km
Cost / 100 mi28.45 LC100 mi27.04 LC100 mi
Annual fuel used1,515 L400 US gal333 UK gal1,440 L380 US gal317 UK gal
Annual fuel cost2,651 LC/year2,520 LC/year

Head-to-head comparisons

Mercedes-Benz SLK (R171) SLK 350 V6

  • Has 32 hp more
  • Has 80 Nm more
  • Is 0.7 s quicker from 0-100 km/h
  • Has 4 km/h (2 mph) higher top speed
  • Has 10 hp/t better power-to-weight
  • Has 26 km (16 mi) more estimated range
  • Has 78 L more trunk volume

Pros

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

Cons

  • Highest combined fuel consumption
  • Heaviest

Porsche Boxster (987) 2.7

  • Is 95 kg lighter
  • Uses 0.5 L/100 km less fuel

Pros

  • Lightest
  • Lowest combined fuel consumption

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
Mercedes-Benz SLK (R171) SLK 350 V6
Porsche Boxster (987) 2.7
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