Car comparison

Porsche Boxster (987) · Facelift 2009 S 3.4vsBMW Z4 (E89) 35i

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

New comparison

Porsche Boxster (987) · Facelift 2009

S 3.4

310 hp3436 ccGasolineRWDAutomaticNaturally aspiratedRoadster2009-2012
VS

BMW Z4 (E89)

35i

306 hp2979 ccGasolineRWDManualTurbochargedRoadster2010-2013

Comparison overview

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

Best choices

Porsche Boxster (987) Facelift 2009 S 3.4

  • Quickest 0-100 km/h
    5.2 s
  • Fastest top speed
    272 km/h
    169 mph
  • Most powerful
    310 hp
    231 kW
  • Lightest
    1,380 kg
    3,042 lb
  • Best power-to-weight
    225 hp/t
    168 kW/t
    4.5 kg/hp
  • Lowest combined fuel consumption
    9.4 L/100 km
    25.0 mpg US
    30.1 mpg UK
  • Lowest highway consumption
    6.6 L/100 km
    35.6 mpg US
    42.8 mpg UK
  • Best estimated range
    691 km
    430 mi
  • Best performance score
    68/100
  • Best economy score
    82/100

BMW Z4 (E89) 35i

  • Highest torque
    400 Nm
    295 lb-ft
  • Lowest city consumption
    13.5 L/100 km
    17.4 mpg US
    20.9 mpg UK
  • Lowest CO2 emissions
    219 g/km
  • Best overall score
    56/100
  • Best practicality score
    32/100

Specification comparison

Specification comparison
ModelPorscheBoxster (987)Facelift 2009S 3.4BMWZ4 (E89)35i
Power
310hp231kW
306hp228kW
Torque
360Nm266lb-ft
400Nm295lb-ft
Curb weight
1,380kg3,042lb
1,580kg3,483lb
Gross weight
1,675kg3,693lb
1,835kg4,045lb
Top speed
272 km/h
169 mph
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
78.5s99% target: 269 km/h / 167 mph
Calculated
70.8s99% target: 267 km/h / 166 mph
Calculated
0-100 km/h
5.2s
5.2s
0-200 km/h
18.2s
17.6s
Calculated
0-60 mph
4.9s
Calculated
5.0s
Calculated
Fuel consumption
9.4L/100 km25mpg US30.1mpg UK
9.4L/100 km25mpg US30.1mpg UK
Fuel consumption city
14.1L/100 km16.7mpg US20.0mpg UK
13.5L/100 km17.4mpg US20.9mpg UK
Fuel consumption highway
6.6L/100 km35.6mpg US42.8mpg UK
7L/100 km33.6mpg US40.4mpg UK
Quarter mile
13.3s
Calculated
13.3s
Calculated
Power-to-weight
225hp/t168kW/t102hp/1000 lb
Calculated
194hp/t144kW/t88hp/1000 lb
Calculated
Torque-to-weight
261Nm/t175lb-ft/ton
Calculated
253Nm/t169lb-ft/ton
Calculated
Estimated range
691km430mi
Calculated
585km364mi
Calculated
Displacement
3,436cc210cu in
2,979cc182cu in
Length
4,342mm171in
4,239mm167in
Width
1,801mm71in
1,790mm70in
Height
1,294mm51in
1,291mm51in
Wheelbase
2,415mm95in
2,496mm98in
Front track
1,486mm59in
1,511mm59in
Rear track
1,528mm60in
1,559mm61in
Ground clearance
123mm5in
-
Trunk volume
130L
-
Doors
2
2
Seats
2
2
Fuel tank
65L
55L
CO2 emissions
221g/km
219g/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) Facelift 2009 S 3.4BMW Z4 (E89) 35iPowerTorque
  • Porsche Boxster (987) Facelift 2009 S 3.4: Power / Torque
  • BMW Z4 (E89) 35i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
PorscheBoxster (987)Facelift 2009S 3.47,200 rpm4,750 rpm7,500 rpm
BMWZ4 (E89)35i5,800 rpm1,300-5,000 rpm6,050 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorscheBoxster (987)Facelift 2009S 3.4BMWZ4 (E89)35i
Acceleration checkpoints
0-60 mph
0-97 km/h
4.9 s
5.0 s
0-100 km/h
0-62 mph
5.2 s
5.2 s
0-200 km/h
0-124 mph
18.2 s
17.6 s
Top speed
272 km/h
169 mph
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.2 s
2.2 s
330 ft
101 m
5.8 s
5.8 s
1/8 mile
201 m
8.7 s
8.7 s
1000 ft
305 m
11.2 s
11.2 s
1/4 mile
402 m
13.3 s
13.3 s
Trap speed
1/4 mile
402 m
174 km/h
108 mph
176 km/h
109 mph

Power comparison

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

Chart data table
VehicleValue
PorscheBoxster (987)Facelift 2009S 3.4
310 hp
231 kW
BMWZ4 (E89)35i
306 hp
228 kW

Porsche Boxster (987) Facelift 2009 S 3.4 has 4 hp more than BMW Z4 (E89) 35i.

The biggest power difference is between BMW Z4 (E89) 35i and Porsche Boxster (987) Facelift 2009 S 3.4: 4 hp (3 kW).

Torque comparison

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

Chart data table
VehicleValue
PorscheBoxster (987)Facelift 2009S 3.4
360 Nm
266 lb-ft
BMWZ4 (E89)35i
400 Nm
295 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
PorscheBoxster (987)Facelift 2009S 3.4
1,380 kg
3,042 lb
BMWZ4 (E89)35i
1,580 kg
3,483 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)Facelift 2009S 3.4
272 km/h
169 mph
BMWZ4 (E89)35i
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
PorscheBoxster (987)Facelift 2009S 3.45.2 s
BMWZ4 (E89)35i5.2 s

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
PorscheBoxster (987)Facelift 2009S 3.4
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
BMWZ4 (E89)35i
9.4 L/100 km
25.0 mpg US
30.1 mpg UK

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
VehicleValue
PorscheBoxster (987)Facelift 2009S 3.4
225 hp/t
168 kW/t
4.5 kg/hp
BMWZ4 (E89)35i
194 hp/t
144 kW/t
5.2 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
PorscheBoxster (987)Facelift 2009S 3.4
691 km
430 mi
BMWZ4 (E89)35i
585 km
364 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
PorscheBoxster (987)Facelift 2009S 3.4
310 hp
231 kW
5.2 s
272 km/h
169 mph
BMWZ4 (E89)35i
306 hp
228 kW
5.2 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
PorscheBoxster (987)Facelift 2009S 3.4
Power
310 hp
231 kW
0-100 km/h5.2 s
Top speed
272 km/h
169 mph
Doors/seats
2 doors
2 seats
Trunk
130 L
4.6 cu ft
Length
4,342 mm
170.9 in
Height
1,294 mm
50.9 in
BMWZ4 (E89)35i
Power
306 hp
228 kW
0-100 km/h5.2 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk-
Length
4,239 mm
166.9 in
Height
1,291 mm
50.8 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)Facelift 2009S 3.4
Power
310 hp
231 kW
0-100 km/h5.2 s
Top speed
272 km/h
169 mph
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
BMWZ4 (E89)35i
Power
306 hp
228 kW
0-100 km/h5.2 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
9.4 L/100 km
25.0 mpg US
30.1 mpg UK

Porsche Boxster (987) Facelift 2009 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 (987)Facelift 2009S 3.4
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
5.2 s
BMWZ4 (E89)35i
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
5.2 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)Facelift 2009S 3.4
225 hp/t
168 kW/t
4.5 kg/hp
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
BMWZ4 (E89)35i
194 hp/t
144 kW/t
5.2 kg/hp
9.4 L/100 km
25.0 mpg US
30.1 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorscheBoxster (987)Facelift 2009S 3.4BMWZ4 (E89)35i
Power
310 hp
231 kW
306 hp
228 kW
Torque
360 Nm
266 lb-ft
400 Nm
295 lb-ft
Acceleration
5.2 s
5.2 s
Top speed
272 km/h
169 mph
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Lightness
1,380 kg
3,042 lb
1,580 kg
3,483 lb
Fuel consumption
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
130 L
4.6 cu ft
Length
4,342 mm
170.9 in
Height
1,294 mm
50.9 in
Doors/seats
2 doors
2 seats
Trunk-
Length
4,239 mm
166.9 in
Height
1,291 mm
50.8 in
Range score
691 km
430 mi
585 km
364 mi
CO2 score
221 g/km
219 g/km
Trunk score
130 L
4.6 cu ft
-
Power-to-weight score
225 hp/t
168 kW/t
4.5 kg/hp
194 hp/t
144 kW/t
5.2 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) Facelift 2009 S 3.4BMW Z4 (E89) 35i
Consumption9.4 L/100 km25 mpg US30.1 mpg UK9.4 L/100 km25 mpg US30.1 mpg UK
Cost / 100 km16.45 LC100 km16.45 LC100 km
Cost / 100 mi26.47 LC100 mi26.47 LC100 mi
Annual fuel used1,410 L372 US gal310 UK gal1,410 L372 US gal310 UK gal
Annual fuel cost2,468 LC/year2,468 LC/year

Head-to-head comparisons

Porsche Boxster (987) Facelift 2009 S 3.4

  • Has 4 hp more
  • Is 200 kg lighter
  • Has 2 km/h (1 mph) higher top speed
  • Has 31 hp/t better power-to-weight
  • Has 106 km (66 mi) more estimated range

Pros

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

Cons

  • Highest CO2 emissions

BMW Z4 (E89) 35i

  • Has 40 Nm more
  • Emits 2 g/km less CO2

Pros

  • Highest torque

Cons

  • Lowest power
  • Heaviest
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche Boxster (987) S 3.4
BMW Z4 (E89) 35i
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2 vehicles selected

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