Car comparison

Porsche Boxster (981) 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 (981)

S 3.4

315 hp3436 ccGasolineRWDManualNaturally aspiratedRoadster2012-2016
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

Porsche Boxster (981) S 3.4

  • Fastest top speed
    279 km/h
    173 mph
  • Lightest
    1,340 kg
    2,954 lb
  • Best power-to-weight
    235 hp/t
    175 kW/t
    4.3 kg/hp
  • Lowest combined fuel consumption
    9.0 L/100 km
    26.1 mpg US
    31.4 mpg UK
  • Lowest city consumption
    12.7 L/100 km
    18.5 mpg US
    22.2 mpg UK
  • Lowest highway consumption
    7.1 L/100 km
    33.1 mpg US
    39.8 mpg UK
  • Lowest CO2 emissions
    211 g/km
  • Best estimated range
    711 km
    442 mi
  • Largest trunk
    280 L
  • Best overall score
    58/100
  • Best economy score
    83/100
  • Best practicality score
    31/100

Specification comparison

Specification comparison
ModelPorscheBoxster (981)S 3.4AUDITT RS Roadster (8J)2.5 TFSI
Power
315hp235kW
340hp254kW
Torque
360Nm266lb-ft
450Nm332lb-ft
Curb weight
1,340kg2,954lb
1,510kg3,329lb
Gross weight
1,655kg3,649lb
1,830kg4,034lb
Top speed
279 km/h
173 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
66.4s99% target: 276 km/h / 172 mph
Calculated
61.0s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
5.1s
4.7s
0-200 km/h
16.1s
Calculated
16.6s
Calculated
0-60 mph
4.9s
Calculated
4.5s
Calculated
Fuel consumption
9L/100 km26.1mpg US31.4mpg UK
9.5L/100 km24.8mpg US29.7mpg UK
Fuel consumption city
12.7L/100 km18.5mpg US22.2mpg UK
13.3L/100 km17.7mpg US21.2mpg UK
Fuel consumption highway
7.1L/100 km33.1mpg US39.8mpg UK
7.2L/100 km32.7mpg US39.2mpg UK
Quarter mile
13.1s
Calculated
12.8s
Calculated
Power-to-weight
235hp/t175kW/t107hp/1000 lb
Calculated
225hp/t168kW/t102hp/1000 lb
Calculated
Torque-to-weight
269Nm/t180lb-ft/ton
Calculated
298Nm/t199lb-ft/ton
Calculated
Estimated range
711km442mi
Calculated
632km392mi
Calculated
Displacement
3,436cc210cu in
2,480cc151cu in
Length
4,374mm172in
4,198mm165in
Width
1,801mm71in
1,842mm73in
Height
1,281mm50in
1,348mm53in
Wheelbase
2,475mm97in
2,468mm97in
Front track-
1,555mm61in
Rear track-
1,546mm61in
Trunk volume
280L
250L
Doors
2
2
Seats
2
2
Fuel tank
64L
60L
CO2 emissions
211g/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 (981) S 3.4AUDI TT RS Roadster (8J) 2.5 TFSIPowerTorque
  • Porsche Boxster (981) 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 (981)S 3.46,700 rpm4,500-5,800 rpm6,950 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 (981)S 3.4AUDITT RS Roadster (8J)2.5 TFSI
Acceleration checkpoints
0-60 mph
0-97 km/h
4.9 s
4.5 s
0-100 km/h
0-62 mph
5.1 s
4.7 s
0-200 km/h
0-124 mph
16.1 s
16.6 s
Top speed
279 km/h
173 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.3 s
2.1 s
330 ft
101 m
5.8 s
5.6 s
1/8 mile
201 m
8.7 s
8.4 s
1000 ft
305 m
11.1 s
10.8 s
1/4 mile
402 m
13.1 s
12.8 s
Trap speed
1/4 mile
402 m
181 km/h
113 mph
179 km/h
112 mph

Power comparison

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

Chart data table
VehicleValue
PorscheBoxster (981)S 3.4
315 hp
235 kW
AUDITT RS Roadster (8J)2.5 TFSI
340 hp
254 kW

AUDI TT RS Roadster (8J) 2.5 TFSI has 25 hp more than Porsche Boxster (981) S 3.4.

The biggest power difference is between Porsche Boxster (981) S 3.4 and AUDI TT RS Roadster (8J) 2.5 TFSI: 25 hp (19 kW).

Torque comparison

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

Chart data table
VehicleValue
PorscheBoxster (981)S 3.4
360 Nm
266 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 (981)S 3.4
1,340 kg
2,954 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 (981)S 3.4
279 km/h
173 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 (981)S 3.45.1 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 (981) S 3.4: 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
PorscheBoxster (981)S 3.4
9.0 L/100 km
26.1 mpg US
31.4 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 Porsche Boxster (981) S 3.4 and AUDI TT RS Roadster (8J) 2.5 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
PorscheBoxster (981)S 3.4
235 hp/t
175 kW/t
4.3 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 (981)S 3.4
711 km
442 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 (981)S 3.4
315 hp
235 kW
5.1 s
279 km/h
173 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 (981)S 3.4
Power
315 hp
235 kW
0-100 km/h5.1 s
Top speed
279 km/h
173 mph
Doors/seats
2 doors
2 seats
Trunk
280 L
9.9 cu ft
Length
4,374 mm
172.2 in
Height
1,281 mm
50.4 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 (981)S 3.4
Power
315 hp
235 kW
0-100 km/h5.1 s
Top speed
279 km/h
173 mph
9.0 L/100 km
26.1 mpg US
31.4 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

Porsche Boxster (981) S 3.4 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 (981)S 3.4
9.0 L/100 km
26.1 mpg US
31.4 mpg UK
5.1 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 (981)S 3.4
235 hp/t
175 kW/t
4.3 kg/hp
9.0 L/100 km
26.1 mpg US
31.4 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 (981)S 3.4AUDITT RS Roadster (8J)2.5 TFSI
Power
315 hp
235 kW
340 hp
254 kW
Torque
360 Nm
266 lb-ft
450 Nm
332 lb-ft
Acceleration
5.1 s
4.7 s
Top speed
279 km/h
173 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,340 kg
2,954 lb
1,510 kg
3,329 lb
Fuel consumption
9.0 L/100 km
26.1 mpg US
31.4 mpg UK
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
280 L
9.9 cu ft
Length
4,374 mm
172.2 in
Height
1,281 mm
50.4 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
711 km
442 mi
632 km
392 mi
CO2 score
211 g/km
221 g/km
Trunk score
280 L
9.9 cu ft
250 L
8.8 cu ft
Power-to-weight score
235 hp/t
175 kW/t
4.3 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 (981) S 3.4AUDI TT RS Roadster (8J) 2.5 TFSI
Consumption9 L/100 km26.1 mpg US31.4 mpg UK9.5 L/100 km24.8 mpg US29.7 mpg UK
Cost / 100 km15.75 LC100 km16.63 LC100 km
Cost / 100 mi25.35 LC100 mi26.76 LC100 mi
Annual fuel used1,350 L357 US gal297 UK gal1,425 L376 US gal313 UK gal
Annual fuel cost2,363 LC/year2,494 LC/year

Head-to-head comparisons

Porsche Boxster (981) S 3.4

  • Is 170 kg lighter
  • Has 19 km/h (12 mph) higher top speed
  • Uses 0.5 L/100 km less fuel
  • Has 10 hp/t better power-to-weight
  • Has 80 km (49 mi) more estimated range
  • Has 30 L more trunk volume
  • Emits 10 g/km less CO2

Pros

  • Highest top speed
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power

AUDI TT RS Roadster (8J) 2.5 TFSI

  • Has 25 hp more
  • Has 90 Nm more
  • Is 0.4 s quicker from 0-100 km/h

Pros

  • Quickest 0-100 km/h in this comparison
  • Most powerful
  • Highest torque

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Lowest top speed
  • Smallest trunk
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche Boxster (981) S 3.4
AUDI TT RS Roadster (8J) 2.5 TFSI
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