Car comparison

Mercedes-Benz SL (R230) · Facelift 2008 SL 600 V12vsMercedes-Benz SLK (R171) AMG SLK 55 V8

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

New comparison

Mercedes-Benz SL (R230) · Facelift 2008

SL 600 V12

517 hp5513 ccGasolineRWDAutomaticTwin-turboRoadster2008-2011
VS

Mercedes-Benz SLK (R171)

AMG SLK 55 V8

360 hp5439 ccGasolineRWDAutomaticNaturally aspiratedRoadster2004-2007

Comparison overview

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

Best choices

Mercedes-Benz SL (R230) Facelift 2008 SL 600 V12

  • Quickest 0-100 km/h
    4.5 s
  • Fastest top speed
    270 km/h
    168 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    517 hp
    386 kW
  • Highest torque
    830 Nm
    612 lb-ft
  • Best power-to-weight
    262 hp/t
    196 kW/t
    3.8 kg/hp
  • Largest trunk
    235 L
  • Best overall score
    67/100
  • Best performance score
    85/100
  • Best practicality score
    30/100

Mercedes-Benz SLK (R171) AMG SLK 55 V8

  • Lightest
    1,465 kg
    3,230 lb
  • Lowest combined fuel consumption
    12.0 L/100 km
    19.6 mpg US
    23.5 mpg UK
  • Lowest city consumption
    17.7 L/100 km
    13.3 mpg US
    16.0 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
ModelMercedes-BenzSL (R230)Facelift 2008SL 600 V12Mercedes-BenzSLK (R171)AMG SLK 55 V8
Power
517hp386kW
360hp268kW
Torque
830Nm612lb-ft
510Nm376lb-ft
Curb weight
1,970kg4,343lb
1,465kg3,230lb
Gross weight
2,320kg5,115lb
1,850kg4,079lb
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
58.2s99% target: 267 km/h / 166 mph
Calculated
61.3s99% target: 267 km/h / 166 mph
Calculated
0-100 km/h
4.5s
4.9s
0-200 km/h
14.8s
Calculated
15.9s
Calculated
0-60 mph
4.3s
Calculated
4.7s
Calculated
Fuel consumption
13.9L/100 km16.9mpg US20.3mpg UK
12L/100 km19.6mpg US23.5mpg UK
Fuel consumption city
21.1L/100 km11.1mpg US13.4mpg UK
17.7L/100 km13.3mpg US16.0mpg UK
Fuel consumption highway
9.6L/100 km24.5mpg US29.4mpg UK
8.8L/100 km26.7mpg US32.1mpg UK
Quarter mile
12.5s
Calculated
12.9s
Calculated
Power-to-weight
262hp/t196kW/t119hp/1000 lb
Calculated
246hp/t183kW/t111hp/1000 lb
Calculated
Torque-to-weight
421Nm/t282lb-ft/ton
Calculated
348Nm/t233lb-ft/ton
Calculated
Estimated range
576km358mi
Calculated
583km362mi
Calculated
Displacement
5,513cc336cu in
5,439cc332cu in
Length
4,562mm180in
4,087mm161in
Width
1,820mm72in
1,794mm71in
Height
1,317mm52in
1,271mm50in
Wheelbase
2,560mm101in
2,430mm96in
Front track
1,559mm61in
1,524mm60in
Rear track
1,547mm61in
1,549mm61in
Trunk volume
235L
208L
Max trunk volume
339L
-
Doors
2
2
Seats
2
2
Fuel tank
80L
70L

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 SL (R230) Facelift 2008 SL 600 V12Mercedes-Benz SLK (R171) AMG SLK 55 V8PowerTorque
  • Mercedes-Benz SL (R230) Facelift 2008 SL 600 V12: Power / Torque
  • Mercedes-Benz SLK (R171) AMG SLK 55 V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzSL (R230)Facelift 2008SL 600 V125,000 rpm1,900-3,500 rpm5,250 rpm
Mercedes-BenzSLK (R171)AMG SLK 55 V85,750 rpm4,000 rpm6,000 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzSL (R230)Facelift 2008SL 600 V12Mercedes-BenzSLK (R171)AMG SLK 55 V8
Acceleration checkpoints
0-60 mph
0-97 km/h
4.3 s
4.7 s
0-100 km/h
0-62 mph
4.5 s
4.9 s
0-200 km/h
0-124 mph
14.8 s
15.9 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
2.1 s
2.2 s
330 ft
101 m
5.5 s
5.7 s
1/8 mile
201 m
8.2 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
185 km/h
115 mph
182 km/h
113 mph

Power comparison

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

Chart data table
VehicleValue
Mercedes-BenzSL (R230)Facelift 2008SL 600 V12
517 hp
386 kW
Mercedes-BenzSLK (R171)AMG SLK 55 V8
360 hp
268 kW

Mercedes-Benz SL (R230) Facelift 2008 SL 600 V12 has 157 hp more than Mercedes-Benz SLK (R171) AMG SLK 55 V8.

The biggest power difference is between Mercedes-Benz SLK (R171) AMG SLK 55 V8 and Mercedes-Benz SL (R230) Facelift 2008 SL 600 V12: 157 hp (117 kW).

Torque comparison

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

Chart data table
VehicleValue
Mercedes-BenzSL (R230)Facelift 2008SL 600 V12
830 Nm
612 lb-ft
Mercedes-BenzSLK (R171)AMG 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
VehicleValue
Mercedes-BenzSL (R230)Facelift 2008SL 600 V12
1,970 kg
4,343 lb
Mercedes-BenzSLK (R171)AMG SLK 55 V8
1,465 kg
3,230 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-BenzSL (R230)Facelift 2008SL 600 V12
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Mercedes-BenzSLK (R171)AMG 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
VehicleValue
Mercedes-BenzSL (R230)Facelift 2008SL 600 V124.5 s
Mercedes-BenzSLK (R171)AMG SLK 55 V84.9 s

The biggest 0-100 km/h difference is between Mercedes-Benz SL (R230) Facelift 2008 SL 600 V12 and Mercedes-Benz SLK (R171) AMG SLK 55 V8: 0.4 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
Mercedes-BenzSL (R230)Facelift 2008SL 600 V12
13.9 L/100 km
16.9 mpg US
20.3 mpg UK
Mercedes-BenzSLK (R171)AMG SLK 55 V8
12.0 L/100 km
19.6 mpg US
23.5 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz SLK (R171) AMG SLK 55 V8 and Mercedes-Benz SL (R230) Facelift 2008 SL 600 V12: 1.9 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-BenzSL (R230)Facelift 2008SL 600 V12
262 hp/t
196 kW/t
3.8 kg/hp
Mercedes-BenzSLK (R171)AMG SLK 55 V8
246 hp/t
183 kW/t
4.1 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Mercedes-BenzSL (R230)Facelift 2008SL 600 V12
576 km
358 mi
Mercedes-BenzSLK (R171)AMG SLK 55 V8
583 km
362 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Mercedes-BenzSL (R230)Facelift 2008SL 600 V12
517 hp
386 kW
4.5 s
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Mercedes-BenzSLK (R171)AMG 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.

Chart data table
VehiclePerformance scorePracticality score
Mercedes-BenzSL (R230)Facelift 2008SL 600 V12
Power
517 hp
386 kW
0-100 km/h4.5 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk
235 L
8.3 cu ft
Length
4,562 mm
179.6 in
Height
1,317 mm
51.9 in
Mercedes-BenzSLK (R171)AMG 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
4,087 mm
160.9 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.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
Mercedes-BenzSL (R230)Facelift 2008SL 600 V12
Power
517 hp
386 kW
0-100 km/h4.5 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
13.9 L/100 km
16.9 mpg US
20.3 mpg UK
Mercedes-BenzSLK (R171)AMG 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

Mercedes-Benz SL (R230) Facelift 2008 SL 600 V12 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-BenzSL (R230)Facelift 2008SL 600 V12
13.9 L/100 km
16.9 mpg US
20.3 mpg UK
4.5 s
Mercedes-BenzSLK (R171)AMG 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
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
Mercedes-BenzSL (R230)Facelift 2008SL 600 V12
262 hp/t
196 kW/t
3.8 kg/hp
13.9 L/100 km
16.9 mpg US
20.3 mpg UK
Mercedes-BenzSLK (R171)AMG SLK 55 V8
246 hp/t
183 kW/t
4.1 kg/hp
12.0 L/100 km
19.6 mpg US
23.5 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleMercedes-BenzSL (R230)Facelift 2008SL 600 V12Mercedes-BenzSLK (R171)AMG SLK 55 V8
Power
517 hp
386 kW
360 hp
268 kW
Torque
830 Nm
612 lb-ft
510 Nm
376 lb-ft
Acceleration
4.5 s
4.9 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Lightness
1,970 kg
4,343 lb
1,465 kg
3,230 lb
Fuel consumption
13.9 L/100 km
16.9 mpg US
20.3 mpg UK
12.0 L/100 km
19.6 mpg US
23.5 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
235 L
8.3 cu ft
Length
4,562 mm
179.6 in
Height
1,317 mm
51.9 in
Doors/seats
2 doors
2 seats
Trunk
208 L
7.3 cu ft
Length
4,087 mm
160.9 in
Height
1,271 mm
50.0 in
Range score
576 km
358 mi
583 km
362 mi
Trunk score
235 L
8.3 cu ft
208 L
7.3 cu ft
Power-to-weight score
262 hp/t
196 kW/t
3.8 kg/hp
246 hp/t
183 kW/t
4.1 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 SL (R230) Facelift 2008 SL 600 V12Mercedes-Benz SLK (R171) AMG SLK 55 V8
Consumption13.9 L/100 km16.9 mpg US20.3 mpg UK12 L/100 km19.6 mpg US23.5 mpg UK
Cost / 100 km24.33 LC100 km21.00 LC100 km
Cost / 100 mi39.15 LC100 mi33.80 LC100 mi
Annual fuel used2,085 L551 US gal459 UK gal1,800 L476 US gal396 UK gal
Annual fuel cost3,649 LC/year3,150 LC/year

Head-to-head comparisons

Mercedes-Benz SL (R230) Facelift 2008 SL 600 V12

  • Has 157 hp more
  • Has 320 Nm more
  • Is 0.4 s quicker from 0-100 km/h
  • Has 17 hp/t better power-to-weight
  • Has 27 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
  • Largest trunk

Cons

  • Highest combined fuel consumption
  • Heaviest

Mercedes-Benz SLK (R171) AMG SLK 55 V8

  • Is 505 kg lighter
  • Uses 1.9 L/100 km less fuel
  • Has 8 km (5 mi) more estimated range

Pros

  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
Mercedes-Benz SL (R230) SL 600 V12
Mercedes-Benz SLK (R171) AMG SLK 55 V8
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