Car comparison

Mercedes-Benz SLK (R171) · Facelift 2008 SLK 350 V6vsAUDI TTS Roadster (8J) 2.0 TFSI

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

New comparison

Mercedes-Benz SLK (R171) · Facelift 2008

SLK 350 V6

305 hp3498 ccGasolineRWDAutomaticNaturally aspiratedRoadster2008-2011
VS

AUDI TTS Roadster (8J)

2.0 TFSI

272 hp1984 ccGasolineAWDAutomaticTurbochargedRoadster2008-2010

Comparison overview

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

Best choices

Mercedes-Benz SLK (R171) Facelift 2008 SLK 350 V6

  • Quickest 0-100 km/h
    5.4 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    305 hp
    227 kW
  • Highest torque
    360 Nm
    266 lb-ft
  • Lightest
    1,430 kg
    3,153 lb
  • Best power-to-weight
    213 hp/t
    159 kW/t
    4.7 kg/hp
  • Best estimated range
    778 km
    483 mi
  • Best overall score
    54/100
  • Best performance score
    66/100

AUDI TTS Roadster (8J) 2.0 TFSI

  • Lowest combined fuel consumption
    7.9 L/100 km
    29.8 mpg US
    35.8 mpg UK
  • Lowest city consumption
    10.8 L/100 km
    21.8 mpg US
    26.2 mpg UK
  • Lowest highway consumption
    6.2 L/100 km
    37.9 mpg US
    45.6 mpg UK
  • Largest trunk
    250 L
  • Best economy score
    86/100
  • Best practicality score
    30/100

Specification comparison

Specification comparison
ModelMercedes-BenzSLK (R171)Facelift 2008SLK 350 V6AUDITTS Roadster (8J)2.0 TFSI
Power
305hp227kW
272hp203kW
Torque
360Nm266lb-ft
350Nm258lb-ft
Curb weight
1,430kg3,153lb
1,495kg3,296lb
Gross weight
1,800kg3,968lb
1,815kg4,001lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
250 km/h
155 mph
To 99% top speed
68.7s99% target: 262 km/h / 163 mph
Calculated
69.6s99% target: 248 km/h / 154 mph
Calculated
0-100 km/h
5.4s
5.5s
0-200 km/h
18.2s
Calculated
20.7s
Calculated
0-60 mph
5.1s
Calculated
5.2s
Calculated
Fuel consumption
9L/100 km26.1mpg US31.4mpg UK
7.9L/100 km29.8mpg US35.8mpg UK
Fuel consumption city
12.6L/100 km18.7mpg US22.4mpg UK
10.8L/100 km21.8mpg US26.2mpg UK
Fuel consumption highway
6.9L/100 km34.1mpg US40.9mpg UK
6.2L/100 km37.9mpg US45.6mpg UK
Quarter mile
13.5s
Calculated
13.7s
Calculated
Power-to-weight
213hp/t159kW/t97hp/1000 lb
Calculated
182hp/t136kW/t83hp/1000 lb
Calculated
Torque-to-weight
252Nm/t168lb-ft/ton
Calculated
234Nm/t157lb-ft/ton
Calculated
Estimated range
778km483mi
Calculated
759km472mi
Calculated
Displacement
3,498cc213cu in
1,984cc121cu in
Length
4,107mm162in
4,198mm165in
Width
1,788mm70in
1,842mm73in
Height
1,298mm51in
1,350mm53in
Wheelbase
2,430mm96in
2,468mm97in
Front track
1,525mm60in
1,555mm61in
Rear track
1,550mm61in
1,546mm61in
Trunk volume
208L
250L
Doors
2
2
Seats
2
2
Fuel tank
70L
60L
CO2 emissions-
184g/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) Facelift 2008 SLK 350 V6AUDI TTS Roadster (8J) 2.0 TFSIPowerTorque
  • Mercedes-Benz SLK (R171) Facelift 2008 SLK 350 V6: Power / Torque
  • AUDI TTS Roadster (8J) 2.0 TFSI: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Mercedes-BenzSLK (R171)Facelift 2008SLK 350 V66,500 rpm4,900 rpm6,750 rpm
AUDITTS Roadster (8J)2.0 TFSI6,000 rpm2,500-5,000 rpm6,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricMercedes-BenzSLK (R171)Facelift 2008SLK 350 V6AUDITTS Roadster (8J)2.0 TFSI
Acceleration checkpoints
0-60 mph
0-97 km/h
5.1 s
5.2 s
0-100 km/h
0-62 mph
5.4 s
5.5 s
0-200 km/h
0-124 mph
18.2 s
20.7 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Limited
250 km/h
155 mph
Drag race simulation
60 ft
18 m
2.3 s
2.2 s
330 ft
101 m
5.9 s
5.9 s
1/8 mile
201 m
8.9 s
8.9 s
1000 ft
305 m
11.4 s
11.5 s
1/4 mile
402 m
13.5 s
13.7 s
Trap speed
1/4 mile
402 m
174 km/h
108 mph
169 km/h
105 mph

Power comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R171)Facelift 2008SLK 350 V6
305 hp
227 kW
AUDITTS Roadster (8J)2.0 TFSI
272 hp
203 kW

Mercedes-Benz SLK (R171) Facelift 2008 SLK 350 V6 has 33 hp more than AUDI TTS Roadster (8J) 2.0 TFSI.

The biggest power difference is between AUDI TTS Roadster (8J) 2.0 TFSI and Mercedes-Benz SLK (R171) Facelift 2008 SLK 350 V6: 33 hp (25 kW).

Torque comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R171)Facelift 2008SLK 350 V6
360 Nm
266 lb-ft
AUDITTS Roadster (8J)2.0 TFSI
350 Nm
258 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R171)Facelift 2008SLK 350 V6
1,430 kg
3,153 lb
AUDITTS Roadster (8J)2.0 TFSI
1,495 kg
3,296 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)Facelift 2008SLK 350 V6
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
AUDITTS Roadster (8J)2.0 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 (R171)Facelift 2008SLK 350 V65.4 s
AUDITTS Roadster (8J)2.0 TFSI5.5 s

The biggest 0-100 km/h difference is between Mercedes-Benz SLK (R171) Facelift 2008 SLK 350 V6 and AUDI TTS Roadster (8J) 2.0 TFSI: 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-BenzSLK (R171)Facelift 2008SLK 350 V6
9.0 L/100 km
26.1 mpg US
31.4 mpg UK
AUDITTS Roadster (8J)2.0 TFSI
7.9 L/100 km
29.8 mpg US
35.8 mpg UK

The biggest fuel consumption difference is between AUDI TTS Roadster (8J) 2.0 TFSI and Mercedes-Benz SLK (R171) Facelift 2008 SLK 350 V6: 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-BenzSLK (R171)Facelift 2008SLK 350 V6
213 hp/t
159 kW/t
4.7 kg/hp
AUDITTS Roadster (8J)2.0 TFSI
182 hp/t
136 kW/t
5.5 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Mercedes-BenzSLK (R171)Facelift 2008SLK 350 V6
778 km
483 mi
AUDITTS Roadster (8J)2.0 TFSI
759 km
472 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Mercedes-BenzSLK (R171)Facelift 2008SLK 350 V6
305 hp
227 kW
5.4 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
AUDITTS Roadster (8J)2.0 TFSI
272 hp
203 kW
5.5 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 (R171)Facelift 2008SLK 350 V6
Power
305 hp
227 kW
0-100 km/h5.4 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk
208 L
7.3 cu ft
Length
4,107 mm
161.7 in
Height
1,298 mm
51.1 in
AUDITTS Roadster (8J)2.0 TFSI
Power
272 hp
203 kW
0-100 km/h5.5 s
Top speed
250 km/h
155 mph
Doors/seats
2 doors
2 seats
Trunk
250 L
8.8 cu ft
Length
4,198 mm
165.3 in
Height
1,350 mm
53.1 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)Facelift 2008SLK 350 V6
Power
305 hp
227 kW
0-100 km/h5.4 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
9.0 L/100 km
26.1 mpg US
31.4 mpg UK
AUDITTS Roadster (8J)2.0 TFSI
Power
272 hp
203 kW
0-100 km/h5.5 s
Top speed
250 km/h
155 mph
7.9 L/100 km
29.8 mpg US
35.8 mpg UK

Mercedes-Benz SLK (R171) Facelift 2008 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)Facelift 2008SLK 350 V6
9.0 L/100 km
26.1 mpg US
31.4 mpg UK
5.4 s
AUDITTS Roadster (8J)2.0 TFSI
7.9 L/100 km
29.8 mpg US
35.8 mpg UK
5.5 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)Facelift 2008SLK 350 V6
213 hp/t
159 kW/t
4.7 kg/hp
9.0 L/100 km
26.1 mpg US
31.4 mpg UK
AUDITTS Roadster (8J)2.0 TFSI
182 hp/t
136 kW/t
5.5 kg/hp
7.9 L/100 km
29.8 mpg US
35.8 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleMercedes-BenzSLK (R171)Facelift 2008SLK 350 V6AUDITTS Roadster (8J)2.0 TFSI
Power
305 hp
227 kW
272 hp
203 kW
Torque
360 Nm
266 lb-ft
350 Nm
258 lb-ft
Acceleration
5.4 s
5.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
250 km/h
155 mph
Lightness
1,430 kg
3,153 lb
1,495 kg
3,296 lb
Fuel consumption
9.0 L/100 km
26.1 mpg US
31.4 mpg UK
7.9 L/100 km
29.8 mpg US
35.8 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
208 L
7.3 cu ft
Length
4,107 mm
161.7 in
Height
1,298 mm
51.1 in
Doors/seats
2 doors
2 seats
Trunk
250 L
8.8 cu ft
Length
4,198 mm
165.3 in
Height
1,350 mm
53.1 in
Range score
778 km
483 mi
759 km
472 mi
CO2 score
-
184 g/km
Trunk score
208 L
7.3 cu ft
250 L
8.8 cu ft
Power-to-weight score
213 hp/t
159 kW/t
4.7 kg/hp
182 hp/t
136 kW/t
5.5 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) Facelift 2008 SLK 350 V6AUDI TTS Roadster (8J) 2.0 TFSI
Consumption9 L/100 km26.1 mpg US31.4 mpg UK7.9 L/100 km29.8 mpg US35.8 mpg UK
Cost / 100 km15.75 LC100 km13.83 LC100 km
Cost / 100 mi25.35 LC100 mi22.25 LC100 mi
Annual fuel used1,350 L357 US gal297 UK gal1,185 L313 US gal261 UK gal
Annual fuel cost2,363 LC/year2,074 LC/year

Head-to-head comparisons

Mercedes-Benz SLK (R171) Facelift 2008 SLK 350 V6

  • Has 33 hp more
  • Has 10 Nm more
  • Is 65 kg lighter
  • Is 0.1 s quicker from 0-100 km/h
  • Has 15 km/h (9 mph) higher top speed
  • Has 31 hp/t better power-to-weight
  • Has 18 km (11 mi) more estimated range

Pros

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

Cons

  • Highest combined fuel consumption
  • Smallest trunk

AUDI TTS Roadster (8J) 2.0 TFSI

  • Uses 1.1 L/100 km less fuel
  • Has 42 L more trunk volume

Pros

  • Lowest combined fuel consumption
  • Largest trunk

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
Mercedes-Benz SLK (R171) SLK 350 V6
AUDI TTS Roadster (8J) 2.0 TFSI
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2 vehicles selected

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