Car comparison

Mercedes-Benz SL (R232) AMG SL 43vsMercedes-Benz SLK (R172) AMG SLK 55 V8

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

New comparison

Mercedes-Benz SL (R232)

AMG SL 43

421 hp1991 ccGasolineRWDAutomaticTurbochargedRoadster2024-present
VS

Mercedes-Benz SLK (R172)

AMG SLK 55 V8

421 hp5461 ccGasolineRWDAutomaticNaturally aspiratedRoadster2012-2015

Comparison overview

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

Best choices

Mercedes-Benz SLK (R172) AMG SLK 55 V8

  • Quickest 0-100 km/h
    4.6 s
  • Highest torque
    540 Nm
    398 lb-ft
  • Lightest
    1,535 kg
    3,384 lb
  • Best power-to-weight
    274 hp/t
    205 kW/t
    3.6 kg/hp
  • Lowest combined fuel consumption
    8.4 L/100 km
    28.0 mpg US
    33.6 mpg UK
  • Best estimated range
    833 km
    518 mi
  • Largest trunk
    225 L
  • Best performance score
    78/100
  • Best economy score
    84/100

Specification comparison

Specification comparison
ModelMercedes-BenzSL (R232)AMG SL 43Mercedes-BenzSLK (R172)AMG SLK 55 V8
Power
421hp314kW
421hp314kW
Torque
500Nm369lb-ft
540Nm398lb-ft
Curb weight
1,735kg3,825lb
1,535kg3,384lb
Gross weight
2,185kg4,817lb
1,910kg4,211lb
Top speed
278 km/h
173 mph
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
65.9s99% target: 275 km/h / 171 mph
Calculated
58.1s99% target: 267 km/h / 166 mph
Calculated
0-100 km/h
4.7s
4.6s
0-200 km/h
15.4s
Calculated
15.0s
Calculated
0-60 mph
4.5s
Calculated
4.4s
Calculated
Fuel consumption
9.5L/100 km24.8mpg US29.7mpg UK
8.4L/100 km28mpg US33.6mpg UK
Fuel consumption city-
12L/100 km19.6mpg US23.5mpg UK
Fuel consumption highway-
6.2L/100 km37.9mpg US45.6mpg UK
Quarter mile
12.7s
Calculated
12.6s
Calculated
Power-to-weight
243hp/t181kW/t110hp/1000 lb
Calculated
274hp/t205kW/t124hp/1000 lb
Calculated
Torque-to-weight
288Nm/t193lb-ft/ton
Calculated
352Nm/t235lb-ft/ton
Calculated
Estimated range
737km458mi
Calculated
833km518mi
Calculated
Displacement
1,991cc121cu in
5,461cc333cu in
Length
4,700mm185in
4,134mm163in
Width
1,915mm75in
1,810mm71in
Height
1,359mm54in
1,301mm51in
Wheelbase
2,700mm106in
2,430mm96in
Front track
1,665mm66in
1,559mm61in
Rear track
1,629mm64in
1,565mm62in
Trunk volume
213L
225L
Max trunk volume-
335L
Doors
2
2
Seats
4
2
Fuel tank
70L
70L
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.

Mercedes-Benz SL (R232) AMG SL 43Mercedes-Benz SLK (R172) AMG SLK 55 V8PowerTorque
  • Mercedes-Benz SL (R232) AMG SL 43: Power / Torque
  • Mercedes-Benz SLK (R172) AMG SLK 55 V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzSL (R232)AMG SL 436,750 rpm5,000 rpm7,000 rpm
Mercedes-BenzSLK (R172)AMG SLK 55 V86,800 rpm4,500 rpm7,050 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzSL (R232)AMG SL 43Mercedes-BenzSLK (R172)AMG SLK 55 V8
Acceleration checkpoints
0-60 mph
0-97 km/h
4.5 s
4.4 s
0-100 km/h
0-62 mph
4.7 s
4.6 s
0-200 km/h
0-124 mph
15.4 s
15.0 s
Top speed
278 km/h
173 mph
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
5.6 s
5.6 s
1/8 mile
201 m
8.4 s
8.3 s
1000 ft
305 m
10.8 s
10.7 s
1/4 mile
402 m
12.7 s
12.6 s
Trap speed
1/4 mile
402 m
183 km/h
114 mph
185 km/h
115 mph

Power comparison

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

Chart data table
VehicleValue
Mercedes-BenzSL (R232)AMG SL 43
421 hp
314 kW
Mercedes-BenzSLK (R172)AMG SLK 55 V8
421 hp
314 kW

Torque comparison

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

Chart data table
VehicleValue
Mercedes-BenzSL (R232)AMG SL 43
500 Nm
369 lb-ft
Mercedes-BenzSLK (R172)AMG SLK 55 V8
540 Nm
398 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzSL (R232)AMG SL 43
1,735 kg
3,825 lb
Mercedes-BenzSLK (R172)AMG SLK 55 V8
1,535 kg
3,384 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 (R232)AMG SL 43
278 km/h
173 mph
Mercedes-BenzSLK (R172)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 (R232)AMG SL 434.7 s
Mercedes-BenzSLK (R172)AMG SLK 55 V84.6 s

The biggest 0-100 km/h difference is between Mercedes-Benz SLK (R172) AMG SLK 55 V8 and Mercedes-Benz SL (R232) AMG SL 43: 0.1 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 (R232)AMG SL 43
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
Mercedes-BenzSLK (R172)AMG SLK 55 V8
8.4 L/100 km
28.0 mpg US
33.6 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz SLK (R172) AMG SLK 55 V8 and Mercedes-Benz SL (R232) AMG SL 43: 1.1 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 (R232)AMG SL 43
243 hp/t
181 kW/t
4.1 kg/hp
Mercedes-BenzSLK (R172)AMG SLK 55 V8
274 hp/t
205 kW/t
3.6 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Mercedes-BenzSL (R232)AMG SL 43
737 km
458 mi
Mercedes-BenzSLK (R172)AMG SLK 55 V8
833 km
518 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Mercedes-BenzSL (R232)AMG SL 43
421 hp
314 kW
4.7 s
278 km/h
173 mph
Mercedes-BenzSLK (R172)AMG SLK 55 V8
421 hp
314 kW
4.6 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 (R232)AMG SL 43
Power
421 hp
314 kW
0-100 km/h4.7 s
Top speed
278 km/h
173 mph
Doors/seats
2 doors
4 seats
Trunk
213 L
7.5 cu ft
Length
4,700 mm
185.0 in
Height
1,359 mm
53.5 in
Mercedes-BenzSLK (R172)AMG SLK 55 V8
Power
421 hp
314 kW
0-100 km/h4.6 s
Top speed
Unrestricted
270 km/h168 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
Mercedes-BenzSL (R232)AMG SL 43
Power
421 hp
314 kW
0-100 km/h4.7 s
Top speed
278 km/h
173 mph
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
Mercedes-BenzSLK (R172)AMG SLK 55 V8
Power
421 hp
314 kW
0-100 km/h4.6 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
8.4 L/100 km
28.0 mpg US
33.6 mpg UK

Mercedes-Benz SLK (R172) 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-BenzSL (R232)AMG SL 43
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
4.7 s
Mercedes-BenzSLK (R172)AMG SLK 55 V8
8.4 L/100 km
28.0 mpg US
33.6 mpg UK
4.6 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 (R232)AMG SL 43
243 hp/t
181 kW/t
4.1 kg/hp
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
Mercedes-BenzSLK (R172)AMG SLK 55 V8
274 hp/t
205 kW/t
3.6 kg/hp
8.4 L/100 km
28.0 mpg US
33.6 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleMercedes-BenzSL (R232)AMG SL 43Mercedes-BenzSLK (R172)AMG SLK 55 V8
Power
421 hp
314 kW
421 hp
314 kW
Torque
500 Nm
369 lb-ft
540 Nm
398 lb-ft
Acceleration
4.7 s
4.6 s
Top speed
278 km/h
173 mph
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Lightness
1,735 kg
3,825 lb
1,535 kg
3,384 lb
Fuel consumption
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
8.4 L/100 km
28.0 mpg US
33.6 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
213 L
7.5 cu ft
Length
4,700 mm
185.0 in
Height
1,359 mm
53.5 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
737 km
458 mi
833 km
518 mi
CO2 score
-
195 g/km
Trunk score
213 L
7.5 cu ft
225 L
7.9 cu ft
Power-to-weight score
243 hp/t
181 kW/t
4.1 kg/hp
274 hp/t
205 kW/t
3.6 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 SL (R232) AMG SL 43Mercedes-Benz SLK (R172) AMG SLK 55 V8
Consumption9.5 L/100 km24.8 mpg US29.7 mpg UK8.4 L/100 km28 mpg US33.6 mpg UK
Cost / 100 km16.63 LC100 km14.70 LC100 km
Cost / 100 mi26.76 LC100 mi23.66 LC100 mi
Annual fuel used1,425 L376 US gal313 UK gal1,260 L333 US gal277 UK gal
Annual fuel cost2,494 LC/year2,205 LC/year

Head-to-head comparisons

Mercedes-Benz SL (R232) AMG SL 43

  • Has 8 km/h (5 mph) higher top speed

Pros

  • Highest top speed
  • Most powerful

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Heaviest
  • Smallest trunk

Mercedes-Benz SLK (R172) AMG SLK 55 V8

  • Has 40 Nm more
  • Is 200 kg lighter
  • Is 0.1 s quicker from 0-100 km/h
  • Uses 1.1 L/100 km less fuel
  • Has 32 hp/t better power-to-weight
  • Has 96 km (60 mi) more estimated range
  • Has 12 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range
  • Largest trunk

Cons

  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Mercedes-Benz SL (R232) AMG SL 43
Mercedes-Benz SLK (R172) AMG SLK 55 V8
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