Car comparison

Porsche Boxster (987) S 3.4vsAUDI TT RS Roadster (8J) 2.5 TFSI

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

New comparison

Porsche Boxster (987)

S 3.4

295 hp3387 ccGasolineRWDManualNaturally aspiratedRoadster2006-2009
VS

AUDI TT RS Roadster (8J)

2.5 TFSI

340 hp2480 ccGasolineAWDManualTurbochargedRoadster2009-2010

Comparison overview

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

Best choices

AUDI TT RS Roadster (8J) 2.5 TFSI

  • Quickest 0-100 km/h
    4.7 s
  • Most powerful
    340 hp
    254 kW
  • Highest torque
    450 Nm
    332 lb-ft
  • Best power-to-weight
    225 hp/t
    168 kW/t
    4.4 kg/hp
  • Lowest combined fuel consumption
    9.5 L/100 km
    24.8 mpg US
    29.7 mpg UK
  • Lowest city consumption
    13.3 L/100 km
    17.7 mpg US
    21.2 mpg UK
  • Lowest highway consumption
    7.2 L/100 km
    32.7 mpg US
    39.2 mpg UK
  • Lowest CO2 emissions
    221 g/km
  • Best estimated range
    632 km
    392 mi
  • Largest trunk
    250 L
  • Best overall score
    58/100
  • Best performance score
    71/100
  • Best economy score
    81/100
  • Best practicality score
    30/100

Specification comparison

Specification comparison
ModelPorscheBoxster (987)S 3.4AUDITT RS Roadster (8J)2.5 TFSI
Power
295hp220kW
340hp254kW
Torque
340Nm251lb-ft
450Nm332lb-ft
Curb weight
1,355kg2,987lb
1,510kg3,329lb
Gross weight
1,630kg3,594lb
1,830kg4,034lb
Top speed
272 km/h
169 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
80.6s99% target: 269 km/h / 167 mph
Calculated
61.0s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
5.4s
4.7s
0-200 km/h
18.8s
16.6s
Calculated
0-60 mph
5.1s
Calculated
4.5s
Calculated
Fuel consumption
10.6L/100 km22.2mpg US26.6mpg UK
9.5L/100 km24.8mpg US29.7mpg UK
Fuel consumption city
15.3L/100 km15.4mpg US18.5mpg UK
13.3L/100 km17.7mpg US21.2mpg UK
Fuel consumption highway
7.8L/100 km30.2mpg US36.2mpg UK
7.2L/100 km32.7mpg US39.2mpg UK
Quarter mile
13.5s
Calculated
12.8s
Calculated
Power-to-weight
218hp/t162kW/t99hp/1000 lb
Calculated
225hp/t168kW/t102hp/1000 lb
Calculated
Torque-to-weight
251Nm/t168lb-ft/ton
Calculated
298Nm/t199lb-ft/ton
Calculated
Estimated range
604km375mi
Calculated
632km392mi
Calculated
Displacement
3,387cc207cu in
2,480cc151cu in
Length
4,329mm170in
4,198mm165in
Width
1,801mm71in
1,842mm73in
Height
1,292mm51in
1,348mm53in
Wheelbase
2,415mm95in
2,468mm97in
Front track
1,486mm59in
1,555mm61in
Rear track
1,528mm60in
1,546mm61in
Ground clearance
121mm5in
-
Trunk volume
130L
250L
Doors
2
2
Seats
2
2
Fuel tank
64L
60L
CO2 emissions
254g/km
221g/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 (987) S 3.4AUDI TT RS Roadster (8J) 2.5 TFSIPowerTorque
  • Porsche Boxster (987) S 3.4: Power / Torque
  • AUDI TT RS Roadster (8J) 2.5 TFSI: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
PorscheBoxster (987)S 3.46,250 rpm4,400-6,000 rpm7,300 rpm
AUDITT RS Roadster (8J)2.5 TFSI5,400-6,500 rpm1,600-6,500 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorscheBoxster (987)S 3.4AUDITT RS Roadster (8J)2.5 TFSI
Acceleration checkpoints
0-60 mph
0-97 km/h
5.1 s
4.5 s
0-100 km/h
0-62 mph
5.4 s
4.7 s
0-200 km/h
0-124 mph
18.8 s
16.6 s
Top speed
272 km/h
169 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.2 s
2.1 s
330 ft
101 m
5.9 s
5.6 s
1/8 mile
201 m
8.8 s
8.4 s
1000 ft
305 m
11.4 s
10.8 s
1/4 mile
402 m
13.5 s
12.8 s
Trap speed
1/4 mile
402 m
172 km/h
107 mph
179 km/h
112 mph

Power comparison

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

Chart data table
VehicleValue
PorscheBoxster (987)S 3.4
295 hp
220 kW
AUDITT RS Roadster (8J)2.5 TFSI
340 hp
254 kW

AUDI TT RS Roadster (8J) 2.5 TFSI has 45 hp more than Porsche Boxster (987) S 3.4.

The biggest power difference is between Porsche Boxster (987) S 3.4 and AUDI TT RS Roadster (8J) 2.5 TFSI: 45 hp (34 kW).

Torque comparison

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

Chart data table
VehicleValue
PorscheBoxster (987)S 3.4
340 Nm
251 lb-ft
AUDITT RS Roadster (8J)2.5 TFSI
450 Nm
332 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
PorscheBoxster (987)S 3.4
1,355 kg
2,987 lb
AUDITT RS Roadster (8J)2.5 TFSI
1,510 kg
3,329 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 (987)S 3.4
272 km/h
169 mph
AUDITT RS Roadster (8J)2.5 TFSI
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 (987)S 3.45.4 s
AUDITT RS Roadster (8J)2.5 TFSI4.7 s

The biggest 0-100 km/h difference is between AUDI TT RS Roadster (8J) 2.5 TFSI and Porsche Boxster (987) S 3.4: 0.7 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 (987)S 3.4
10.6 L/100 km
22.2 mpg US
26.6 mpg UK
AUDITT RS Roadster (8J)2.5 TFSI
9.5 L/100 km
24.8 mpg US
29.7 mpg UK

The biggest fuel consumption difference is between AUDI TT RS Roadster (8J) 2.5 TFSI and Porsche Boxster (987) S 3.4: 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
PorscheBoxster (987)S 3.4
218 hp/t
162 kW/t
4.6 kg/hp
AUDITT RS Roadster (8J)2.5 TFSI
225 hp/t
168 kW/t
4.4 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
PorscheBoxster (987)S 3.4
604 km
375 mi
AUDITT RS Roadster (8J)2.5 TFSI
632 km
392 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
PorscheBoxster (987)S 3.4
295 hp
220 kW
5.4 s
272 km/h
169 mph
AUDITT RS Roadster (8J)2.5 TFSI
340 hp
254 kW
4.7 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 (987)S 3.4
Power
295 hp
220 kW
0-100 km/h5.4 s
Top speed
272 km/h
169 mph
Doors/seats
2 doors
2 seats
Trunk
130 L
4.6 cu ft
Length
4,329 mm
170.4 in
Height
1,292 mm
50.9 in
AUDITT RS Roadster (8J)2.5 TFSI
Power
340 hp
254 kW
0-100 km/h4.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk
250 L
8.8 cu ft
Length
4,198 mm
165.3 in
Height
1,348 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
PorscheBoxster (987)S 3.4
Power
295 hp
220 kW
0-100 km/h5.4 s
Top speed
272 km/h
169 mph
10.6 L/100 km
22.2 mpg US
26.6 mpg UK
AUDITT RS Roadster (8J)2.5 TFSI
Power
340 hp
254 kW
0-100 km/h4.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
9.5 L/100 km
24.8 mpg US
29.7 mpg UK

AUDI TT RS Roadster (8J) 2.5 TFSI 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 (987)S 3.4
10.6 L/100 km
22.2 mpg US
26.6 mpg UK
5.4 s
AUDITT RS Roadster (8J)2.5 TFSI
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
4.7 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 (987)S 3.4
218 hp/t
162 kW/t
4.6 kg/hp
10.6 L/100 km
22.2 mpg US
26.6 mpg UK
AUDITT RS Roadster (8J)2.5 TFSI
225 hp/t
168 kW/t
4.4 kg/hp
9.5 L/100 km
24.8 mpg US
29.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorscheBoxster (987)S 3.4AUDITT RS Roadster (8J)2.5 TFSI
Power
295 hp
220 kW
340 hp
254 kW
Torque
340 Nm
251 lb-ft
450 Nm
332 lb-ft
Acceleration
5.4 s
4.7 s
Top speed
272 km/h
169 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,355 kg
2,987 lb
1,510 kg
3,329 lb
Fuel consumption
10.6 L/100 km
22.2 mpg US
26.6 mpg UK
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
130 L
4.6 cu ft
Length
4,329 mm
170.4 in
Height
1,292 mm
50.9 in
Doors/seats
2 doors
2 seats
Trunk
250 L
8.8 cu ft
Length
4,198 mm
165.3 in
Height
1,348 mm
53.1 in
Range score
604 km
375 mi
632 km
392 mi
CO2 score
254 g/km
221 g/km
Trunk score
130 L
4.6 cu ft
250 L
8.8 cu ft
Power-to-weight score
218 hp/t
162 kW/t
4.6 kg/hp
225 hp/t
168 kW/t
4.4 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 (987) S 3.4AUDI TT RS Roadster (8J) 2.5 TFSI
Consumption10.6 L/100 km22.2 mpg US26.6 mpg UK9.5 L/100 km24.8 mpg US29.7 mpg UK
Cost / 100 km18.55 LC100 km16.63 LC100 km
Cost / 100 mi29.85 LC100 mi26.76 LC100 mi
Annual fuel used1,590 L420 US gal350 UK gal1,425 L376 US gal313 UK gal
Annual fuel cost2,783 LC/year2,494 LC/year

Head-to-head comparisons

Porsche Boxster (987) S 3.4

  • Is 155 kg lighter
  • Has 12 km/h (7 mph) higher top speed

Pros

  • Highest top speed
  • Lightest

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Highest combined fuel consumption
  • Smallest trunk
  • Highest CO2 emissions

AUDI TT RS Roadster (8J) 2.5 TFSI

  • Has 45 hp more
  • Has 110 Nm more
  • Is 0.7 s quicker from 0-100 km/h
  • Uses 1.1 L/100 km less fuel
  • Has 7 hp/t better power-to-weight
  • Has 28 km (17 mi) more estimated range
  • Has 120 L more trunk volume
  • Emits 33 g/km less CO2

Pros

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

Cons

  • Heaviest
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche Boxster (987) S 3.4
AUDI TT RS Roadster (8J) 2.5 TFSI
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