Car comparison

Mercedes-Benz SLK (R172) SLK 300vsAUDI TT Roadster (8S) · Facelift 2018 45 TFSI

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

New comparison

Mercedes-Benz SLK (R172)

SLK 300

245 hp1991 ccGasolineRWDAutomaticTurbochargedRoadster2015-2016
VS

AUDI TT Roadster (8S) · Facelift 2018

45 TFSI

245 hp1984 ccGasolineFWDAutomaticTurbochargedRoadster2018-2023

Comparison overview

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

Best choices

Mercedes-Benz SLK (R172) SLK 300

  • Quickest 0-100 km/h
    5.8 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    245 hp
    183 kW
  • Highest torque
    370 Nm
    273 lb-ft
  • Lightest
    1,430 kg
    3,153 lb
  • Best power-to-weight
    171 hp/t
    128 kW/t
    5.8 kg/hp
  • 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 overall score
    51/100
  • Best performance score
    62/100
  • Best economy score
    90/100

Specification comparison

Specification comparison
ModelMercedes-BenzSLK (R172)SLK 300AUDITT Roadster (8S)Facelift 201845 TFSI
Power
245hp183kW
245hp183kW
Torque
370Nm273lb-ft
370Nm273lb-ft
Curb weight
1,430kg3,153lb
1,450kg3,197lb
Gross weight
1,820kg4,012lb
1,730kg3,814lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
250 km/h
155 mph
To 99% top speed
74.9s99% target: 257 km/h / 160 mph
Calculated
76.2s99% target: 248 km/h / 154 mph
Calculated
0-100 km/h
5.8s
6.0s
0-200 km/h
20.4s
Calculated
22.6s
Calculated
0-60 mph
5.5s
Calculated
5.7s
Calculated
Fuel consumption
6.2L/100 km37.9mpg US45.6mpg UK
6.7L/100 km35.1mpg US42.2mpg UK
Fuel consumption city
7.8L/100 km30.2mpg US36.2mpg UK
8.7L/100 km27mpg US32.5mpg UK
Fuel consumption highway
5.2L/100 km45.2mpg US54.3mpg UK
5.5L/100 km42.8mpg US51.4mpg UK
Quarter mile
13.9s
Calculated
14.1s
Calculated
Power-to-weight
171hp/t128kW/t78hp/1000 lb
Calculated
169hp/t126kW/t77hp/1000 lb
Calculated
Torque-to-weight
259Nm/t173lb-ft/ton
Calculated
255Nm/t171lb-ft/ton
Calculated
Estimated range
968km601mi
Calculated
746km464mi
Calculated
Displacement
1,991cc121cu in
1,984cc121cu in
Length
4,134mm163in
4,191mm165in
Width
1,810mm71in
1,832mm72in
Height
1,301mm51in
1,355mm53in
Wheelbase
2,430mm96in
2,505mm99in
Front track
1,559mm61in
1,572mm62in
Rear track
1,565mm62in
1,552mm61in
Trunk volume
225L
-
Max trunk volume
335L
-
Doors
2
2
Seats
2
2
Fuel tank
60L
50L
CO2 emissions-
152g/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 (R172) SLK 300AUDI TT Roadster (8S) Facelift 2018 45 TFSIPowerTorque
  • Mercedes-Benz SLK (R172) SLK 300: Power / Torque
  • AUDI TT Roadster (8S) Facelift 2018 45 TFSI: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzSLK (R172)SLK 3005,500 rpm1,300-4,000 rpm5,750 rpm
AUDITT Roadster (8S)Facelift 201845 TFSI5,000-6,700 rpm1,600-4,300 rpm6,950 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzSLK (R172)SLK 300AUDITT Roadster (8S)Facelift 201845 TFSI
Acceleration checkpoints
0-60 mph
0-97 km/h
5.5 s
5.7 s
0-100 km/h
0-62 mph
5.8 s
6.0 s
0-200 km/h
0-124 mph
20.4 s
22.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
250 km/h
155 mph
Drag race simulation
60 ft
18 m
2.3 s
2.3 s
330 ft
101 m
6.1 s
6.1 s
1/8 mile
201 m
9.1 s
9.2 s
1000 ft
305 m
11.7 s
11.9 s
1/4 mile
402 m
13.9 s
14.1 s
Trap speed
1/4 mile
402 m
169 km/h
105 mph
164 km/h
102 mph

Power comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R172)SLK 300
245 hp
183 kW
AUDITT Roadster (8S)Facelift 201845 TFSI
245 hp
183 kW

Torque comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R172)SLK 300
370 Nm
273 lb-ft
AUDITT Roadster (8S)Facelift 201845 TFSI
370 Nm
273 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R172)SLK 300
1,430 kg
3,153 lb
AUDITT Roadster (8S)Facelift 201845 TFSI
1,450 kg
3,197 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 (R172)SLK 300
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
AUDITT Roadster (8S)Facelift 201845 TFSI
250 km/h
155 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
Mercedes-BenzSLK (R172)SLK 3005.8 s
AUDITT Roadster (8S)Facelift 201845 TFSI6.0 s

The biggest 0-100 km/h difference is between Mercedes-Benz SLK (R172) SLK 300 and AUDI TT Roadster (8S) Facelift 2018 45 TFSI: 0.2 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 (R172)SLK 300
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
AUDITT Roadster (8S)Facelift 201845 TFSI
6.7 L/100 km
35.1 mpg US
42.2 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz SLK (R172) SLK 300 and AUDI TT Roadster (8S) Facelift 2018 45 TFSI: 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 (R172)SLK 300
171 hp/t
128 kW/t
5.8 kg/hp
AUDITT Roadster (8S)Facelift 201845 TFSI
169 hp/t
126 kW/t
5.9 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R172)SLK 300
968 km
601 mi
AUDITT Roadster (8S)Facelift 201845 TFSI
746 km
464 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Mercedes-BenzSLK (R172)SLK 300
245 hp
183 kW
5.8 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
AUDITT Roadster (8S)Facelift 201845 TFSI
245 hp
183 kW
6.0 s
250 km/h
155 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 (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
AUDITT Roadster (8S)Facelift 201845 TFSI
Power
245 hp
183 kW
0-100 km/h6.0 s
Top speed
250 km/h
155 mph
Doors/seats
2 doors
2 seats
Trunk-
Length
4,191 mm
165.0 in
Height
1,355 mm
53.3 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 (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
AUDITT Roadster (8S)Facelift 201845 TFSI
Power
245 hp
183 kW
0-100 km/h6.0 s
Top speed
250 km/h
155 mph
6.7 L/100 km
35.1 mpg US
42.2 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
Mercedes-BenzSLK (R172)SLK 300
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
5.8 s
AUDITT Roadster (8S)Facelift 201845 TFSI
6.7 L/100 km
35.1 mpg US
42.2 mpg UK
6.0 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 (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
AUDITT Roadster (8S)Facelift 201845 TFSI
169 hp/t
126 kW/t
5.9 kg/hp
6.7 L/100 km
35.1 mpg US
42.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleMercedes-BenzSLK (R172)SLK 300AUDITT Roadster (8S)Facelift 201845 TFSI
Power
245 hp
183 kW
245 hp
183 kW
Torque
370 Nm
273 lb-ft
370 Nm
273 lb-ft
Acceleration
5.8 s
6.0 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
250 km/h
155 mph
Lightness
1,430 kg
3,153 lb
1,450 kg
3,197 lb
Fuel consumption
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
6.7 L/100 km
35.1 mpg US
42.2 mpg UK
Practicality
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
Doors/seats
2 doors
2 seats
Trunk-
Length
4,191 mm
165.0 in
Height
1,355 mm
53.3 in
Range score
968 km
601 mi
746 km
464 mi
CO2 score
-
152 g/km
Trunk score
225 L
7.9 cu ft
-
Power-to-weight score
171 hp/t
128 kW/t
5.8 kg/hp
169 hp/t
126 kW/t
5.9 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 (R172) SLK 300AUDI TT Roadster (8S) Facelift 2018 45 TFSI
Consumption6.2 L/100 km37.9 mpg US45.6 mpg UK6.7 L/100 km35.1 mpg US42.2 mpg UK
Cost / 100 km10.85 LC100 km11.73 LC100 km
Cost / 100 mi17.46 LC100 mi18.87 LC100 mi
Annual fuel used930 L246 US gal205 UK gal1,005 L265 US gal221 UK gal
Annual fuel cost1,628 LC/year1,759 LC/year

Head-to-head comparisons

Mercedes-Benz SLK (R172) SLK 300

  • Is 20 kg lighter
  • Is 0.2 s quicker from 0-100 km/h
  • Has 10 km/h (6 mph) higher top speed
  • Uses 0.5 L/100 km less fuel
  • Has 2 hp/t better power-to-weight
  • Has 221 km (138 mi) more estimated range

Pros

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
Mercedes-Benz SLK (R172) SLK 300
AUDI TT Roadster (8S) 45 TFSI
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2 vehicles selected

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