Car comparison

Porsche Boxster (981) 2.7vsMercedes-Benz SLK (R172) SLK 300

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

New comparison

Porsche Boxster (981)

2.7

265 hp2706 ccGasolineRWDManualNaturally aspiratedRoadster2012-2016
VS

Mercedes-Benz SLK (R172)

SLK 300

245 hp1991 ccGasolineRWDAutomaticTurbochargedRoadster2015-2016

Comparison overview

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

Best choices

Porsche Boxster (981) 2.7

  • Quickest 0-100 km/h
    5.8 s
  • Fastest top speed
    264 km/h
    164 mph
  • Most powerful
    265 hp
    198 kW
  • Lightest
    1,330 kg
    2,932 lb
  • Best power-to-weight
    199 hp/t
    149 kW/t
    5.0 kg/hp
  • Largest trunk
    280 L
  • Best overall score
    52/100
  • Best performance score
    62/100
  • Best practicality score
    31/100

Mercedes-Benz SLK (R172) SLK 300

  • Highest torque
    370 Nm
    273 lb-ft
  • Lowest combined fuel consumption
    6.2 L/100 km
    37.9 mpg US
    45.6 mpg UK
  • Lowest city consumption
    7.8 L/100 km
    30.2 mpg US
    36.2 mpg UK
  • Lowest highway consumption
    5.2 L/100 km
    45.2 mpg US
    54.3 mpg UK
  • Best estimated range
    968 km
    601 mi
  • Best economy score
    90/100

Specification comparison

Specification comparison
ModelPorscheBoxster (981)2.7Mercedes-BenzSLK (R172)SLK 300
Power
265hp198kW
245hp183kW
Torque
280Nm207lb-ft
370Nm273lb-ft
Curb weight
1,330kg2,932lb
1,430kg3,153lb
Gross weight
1,645kg3,627lb
1,820kg4,012lb
Top speed
264 km/h
164 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
72.0s99% target: 261 km/h / 162 mph
Calculated
74.9s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
5.8s
5.8s
0-200 km/h
19.5s
Calculated
20.4s
Calculated
0-60 mph
5.5s
Calculated
5.5s
Calculated
Fuel consumption
8.4L/100 km28mpg US33.6mpg UK
6.2L/100 km37.9mpg US45.6mpg UK
Fuel consumption city
11.8L/100 km19.9mpg US23.9mpg UK
7.8L/100 km30.2mpg US36.2mpg UK
Fuel consumption highway
6.4L/100 km36.8mpg US44.1mpg UK
5.2L/100 km45.2mpg US54.3mpg UK
Quarter mile
13.8s
Calculated
13.9s
Calculated
Power-to-weight
199hp/t149kW/t90hp/1000 lb
Calculated
171hp/t128kW/t78hp/1000 lb
Calculated
Torque-to-weight
211Nm/t141lb-ft/ton
Calculated
259Nm/t173lb-ft/ton
Calculated
Estimated range
762km473mi
Calculated
968km601mi
Calculated
Displacement
2,706cc165cu in
1,991cc121cu in
Length
4,374mm172in
4,134mm163in
Width
1,801mm71in
1,810mm71in
Height
1,282mm50in
1,301mm51in
Wheelbase
2,475mm97in
2,430mm96in
Front track-
1,559mm61in
Rear track-
1,565mm62in
Trunk volume
280L
225L
Max trunk volume-
335L
Doors
2
2
Seats
2
2
Fuel tank
64L
60L
CO2 emissions
195g/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.

Porsche Boxster (981) 2.7Mercedes-Benz SLK (R172) SLK 300PowerTorque
  • Porsche Boxster (981) 2.7: Power / Torque
  • Mercedes-Benz SLK (R172) SLK 300: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
PorscheBoxster (981)2.76,700 rpm4,500-6,500 rpm6,950 rpm
Mercedes-BenzSLK (R172)SLK 3005,500 rpm1,300-4,000 rpm5,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorscheBoxster (981)2.7Mercedes-BenzSLK (R172)SLK 300
Acceleration checkpoints
0-60 mph
0-97 km/h
5.5 s
5.5 s
0-100 km/h
0-62 mph
5.8 s
5.8 s
0-200 km/h
0-124 mph
19.5 s
20.4 s
Top speed
264 km/h
164 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
Drag race simulation
60 ft
18 m
2.4 s
2.3 s
330 ft
101 m
6.1 s
6.1 s
1/8 mile
201 m
9.1 s
9.1 s
1000 ft
305 m
11.7 s
11.7 s
1/4 mile
402 m
13.8 s
13.9 s
Trap speed
1/4 mile
402 m
171 km/h
106 mph
169 km/h
105 mph

Power comparison

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

Chart data table
VehicleValue
PorscheBoxster (981)2.7
265 hp
198 kW
Mercedes-BenzSLK (R172)SLK 300
245 hp
183 kW

Porsche Boxster (981) 2.7 has 20 hp more than Mercedes-Benz SLK (R172) SLK 300.

The biggest power difference is between Mercedes-Benz SLK (R172) SLK 300 and Porsche Boxster (981) 2.7: 20 hp (15 kW).

Torque comparison

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

Chart data table
VehicleValue
PorscheBoxster (981)2.7
280 Nm
207 lb-ft
Mercedes-BenzSLK (R172)SLK 300
370 Nm
273 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
PorscheBoxster (981)2.7
1,330 kg
2,932 lb
Mercedes-BenzSLK (R172)SLK 300
1,430 kg
3,153 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
PorscheBoxster (981)2.7
264 km/h
164 mph
Mercedes-BenzSLK (R172)SLK 300
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
PorscheBoxster (981)2.75.8 s
Mercedes-BenzSLK (R172)SLK 3005.8 s

Fuel consumption comparison

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

Chart data table
VehicleValue
PorscheBoxster (981)2.7
8.4 L/100 km
28.0 mpg US
33.6 mpg UK
Mercedes-BenzSLK (R172)SLK 300
6.2 L/100 km
37.9 mpg US
45.6 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz SLK (R172) SLK 300 and Porsche Boxster (981) 2.7: 2.2 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
PorscheBoxster (981)2.7
199 hp/t
149 kW/t
5.0 kg/hp
Mercedes-BenzSLK (R172)SLK 300
171 hp/t
128 kW/t
5.8 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
PorscheBoxster (981)2.7
762 km
473 mi
Mercedes-BenzSLK (R172)SLK 300
968 km
601 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
PorscheBoxster (981)2.7
265 hp
198 kW
5.8 s
264 km/h
164 mph
Mercedes-BenzSLK (R172)SLK 300
245 hp
183 kW
5.8 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
PorscheBoxster (981)2.7
Power
265 hp
198 kW
0-100 km/h5.8 s
Top speed
264 km/h
164 mph
Doors/seats
2 doors
2 seats
Trunk
280 L
9.9 cu ft
Length
4,374 mm
172.2 in
Height
1,282 mm
50.5 in
Mercedes-BenzSLK (R172)SLK 300
Power
245 hp
183 kW
0-100 km/h5.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk
225 L
7.9 cu ft
Length
4,134 mm
162.8 in
Height
1,301 mm
51.2 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
PorscheBoxster (981)2.7
Power
265 hp
198 kW
0-100 km/h5.8 s
Top speed
264 km/h
164 mph
8.4 L/100 km
28.0 mpg US
33.6 mpg UK
Mercedes-BenzSLK (R172)SLK 300
Power
245 hp
183 kW
0-100 km/h5.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
6.2 L/100 km
37.9 mpg US
45.6 mpg UK

Mercedes-Benz SLK (R172) SLK 300 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
PorscheBoxster (981)2.7
8.4 L/100 km
28.0 mpg US
33.6 mpg UK
5.8 s
Mercedes-BenzSLK (R172)SLK 300
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
5.8 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
PorscheBoxster (981)2.7
199 hp/t
149 kW/t
5.0 kg/hp
8.4 L/100 km
28.0 mpg US
33.6 mpg UK
Mercedes-BenzSLK (R172)SLK 300
171 hp/t
128 kW/t
5.8 kg/hp
6.2 L/100 km
37.9 mpg US
45.6 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorscheBoxster (981)2.7Mercedes-BenzSLK (R172)SLK 300
Power
265 hp
198 kW
245 hp
183 kW
Torque
280 Nm
207 lb-ft
370 Nm
273 lb-ft
Acceleration
5.8 s
5.8 s
Top speed
264 km/h
164 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,330 kg
2,932 lb
1,430 kg
3,153 lb
Fuel consumption
8.4 L/100 km
28.0 mpg US
33.6 mpg UK
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
280 L
9.9 cu ft
Length
4,374 mm
172.2 in
Height
1,282 mm
50.5 in
Doors/seats
2 doors
2 seats
Trunk
225 L
7.9 cu ft
Length
4,134 mm
162.8 in
Height
1,301 mm
51.2 in
Range score
762 km
473 mi
968 km
601 mi
CO2 score
195 g/km
-
Trunk score
280 L
9.9 cu ft
225 L
7.9 cu ft
Power-to-weight score
199 hp/t
149 kW/t
5.0 kg/hp
171 hp/t
128 kW/t
5.8 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
VehiclePorsche Boxster (981) 2.7Mercedes-Benz SLK (R172) SLK 300
Consumption8.4 L/100 km28 mpg US33.6 mpg UK6.2 L/100 km37.9 mpg US45.6 mpg UK
Cost / 100 km14.70 LC100 km10.85 LC100 km
Cost / 100 mi23.66 LC100 mi17.46 LC100 mi
Annual fuel used1,260 L333 US gal277 UK gal930 L246 US gal205 UK gal
Annual fuel cost2,205 LC/year1,628 LC/year

Head-to-head comparisons

Porsche Boxster (981) 2.7

  • Has 20 hp more
  • Is 100 kg lighter
  • Has 4 km/h (2 mph) higher top speed
  • Has 28 hp/t better power-to-weight
  • Has 55 L more trunk volume

Pros

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

Cons

  • Highest combined fuel consumption

Mercedes-Benz SLK (R172) SLK 300

  • Has 90 Nm more
  • Uses 2.2 L/100 km less fuel
  • Has 206 km (128 mi) more estimated range

Pros

  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Lowest power
  • Heaviest
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche Boxster (981) 2.7
Mercedes-Benz SLK (R172) SLK 300
Compare selected cars
2 vehicles selected

Popular comparisons

2.7
2.9
VS
PorscheBoxster (981)2.7vsPorscheBoxster (987)Facelift 20092.9
SLK 300
SLK 350 V6
VS
Mercedes-BenzSLK (R172)SLK 300vsMercedes-BenzSLK (R171)Facelift 2008SLK 350 V6
2.7
S 3.4
VS
PorscheBoxster (981)2.7vsPorscheBoxster (987)S 3.4
SLK 300
SLK 350 V6
VS
Mercedes-BenzSLK (R172)SLK 300vsMercedes-BenzSLK (R171)SLK 350 V6
2.7
S 3.2
VS
PorscheBoxster (981)2.7vsPorscheBoxster (986)S 3.2
SLK 300
SLK 230 Kompressor
VS
Mercedes-BenzSLK (R172)SLK 300vsMercedes-BenzSLK (R170)SLK 230 Kompressor
2.7
2.0 TFSI
VS
PorscheBoxster (981)2.7vsAUDITTS Roadster (8J)Facelift 20102.0 TFSI
SLK 300
AMG SLK 32 V6
VS
Mercedes-BenzSLK (R172)SLK 300vsMercedes-BenzSLK (R170)Facelift 2000AMG SLK 32 V6
2.7
SLK 350 V6
VS
PorscheBoxster (981)2.7vsMercedes-BenzSLK (R172)SLK 350 V6
SLK 300
2.0 TFSI
VS
Mercedes-BenzSLK (R172)SLK 300vsAUDITT Roadster (8S)2.0 TFSI
2.7
28i
VS
PorscheBoxster (981)2.7vsBMWZ4 (E89)28i
2.7
3.7 V6
VS
PorscheBoxster (981)2.7vsNissan370Z RoadsterFacelift 20123.7 V6
Porsche Boxster (981) 2.7 vs Mercedes-Benz SLK (R172) SLK 300 - car comparison - FastVsFaster