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 ccGasolineRWDManualNaturally aspiratedRoadster2009-2012
VS

BMW Z4 (E89)

35i

306 hp2979 ccGasolineRWDAutomaticTurbochargedRoadster2009-2013

Comparison overview

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

Best choices

BMW Z4 (E89) 35i

  • Quickest 0-100 km/h
    5.1 s
  • Highest torque
    400 Nm
    295 lb-ft
  • Lowest combined fuel consumption
    9.0 L/100 km
    26.1 mpg US
    31.4 mpg UK
  • Lowest city consumption
    12.6 L/100 km
    18.7 mpg US
    22.4 mpg UK
  • Lowest highway consumption
    6.9 L/100 km
    34.1 mpg US
    40.9 mpg UK
  • Lowest CO2 emissions
    210 g/km
  • Best overall score
    56/100
  • Best economy score
    83/100
  • Best practicality score
    32/100

Porsche Boxster (987) Facelift 2009 S 3.4

  • Fastest top speed
    274 km/h
    170 mph
  • Most powerful
    310 hp
    231 kW
  • Lightest
    1,355 kg
    2,987 lb
  • Best power-to-weight
    229 hp/t
    171 kW/t
    4.4 kg/hp
  • Best estimated range
    663 km
    412 mi
  • Best performance score
    68/100

Specification comparison

Specification comparison
ModelPorscheBoxster (987)Facelift 2009S 3.4BMWZ4 (E89)35i
Power
310hp231kW
306hp228kW
Torque
360Nm266lb-ft
400Nm295lb-ft
Curb weight
1,355kg2,987lb
1,600kg3,527lb
Gross weight
1,645kg3,627lb
1,855kg4,090lb
Top speed
274 km/h
170 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
80.7s99% target: 271 km/h / 169 mph
Calculated
67.9s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
5.3s
5.1s
0-200 km/h
18.4s
17.6s
Calculated
0-60 mph
5.0s
Calculated
4.9s
Calculated
Fuel consumption
9.8L/100 km24mpg US28.8mpg UK
9L/100 km26.1mpg US31.4mpg UK
Fuel consumption city
14.4L/100 km16.3mpg US19.6mpg UK
12.6L/100 km18.7mpg US22.4mpg UK
Fuel consumption highway
7.2L/100 km32.7mpg US39.2mpg UK
6.9L/100 km34.1mpg US40.9mpg UK
Quarter mile
13.4s
Calculated
13.2s
Calculated
Power-to-weight
229hp/t171kW/t104hp/1000 lb
Calculated
191hp/t143kW/t87hp/1000 lb
Calculated
Torque-to-weight
266Nm/t178lb-ft/ton
Calculated
250Nm/t167lb-ft/ton
Calculated
Estimated range
663km412mi
Calculated
611km380mi
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
230g/km
210g/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
5.0 s
4.9 s
0-100 km/h
0-62 mph
5.3 s
5.1 s
0-200 km/h
0-124 mph
18.4 s
17.6 s
Top speed
274 km/h
170 mph
Unrestricted
265 km/h165 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
8.8 s
8.7 s
1000 ft
305 m
11.3 s
11.1 s
1/4 mile
402 m
13.4 s
13.2 s
Trap speed
1/4 mile
402 m
173 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
1,355 kg
2,987 lb
BMWZ4 (E89)35i
1,600 kg
3,527 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
274 km/h
170 mph
BMWZ4 (E89)35i
Unrestricted
265 km/h165 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 3.45.3 s
BMWZ4 (E89)35i5.1 s

Although Porsche Boxster (987) Facelift 2009 S 3.4 has more power, BMW Z4 (E89) 35i is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between BMW Z4 (E89) 35i and Porsche Boxster (987) Facelift 2009 S 3.4: 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
PorscheBoxster (987)Facelift 2009S 3.4
9.8 L/100 km
24.0 mpg US
28.8 mpg UK
BMWZ4 (E89)35i
9.0 L/100 km
26.1 mpg US
31.4 mpg UK

The biggest fuel consumption difference is between BMW Z4 (E89) 35i and Porsche Boxster (987) Facelift 2009 S 3.4: 0.8 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)Facelift 2009S 3.4
229 hp/t
171 kW/t
4.4 kg/hp
BMWZ4 (E89)35i
191 hp/t
143 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
663 km
412 mi
BMWZ4 (E89)35i
611 km
380 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
5.3 s
274 km/h
170 mph
BMWZ4 (E89)35i
306 hp
228 kW
5.1 s
Unrestricted
265 km/h165 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/h5.3 s
Top speed
274 km/h
170 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/h5.1 s
Top speed
Unrestricted
265 km/h165 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/h5.3 s
Top speed
274 km/h
170 mph
9.8 L/100 km
24.0 mpg US
28.8 mpg UK
BMWZ4 (E89)35i
Power
306 hp
228 kW
0-100 km/h5.1 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

BMW Z4 (E89) 35i 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
9.8 L/100 km
24.0 mpg US
28.8 mpg UK
5.3 s
BMWZ4 (E89)35i
9.0 L/100 km
26.1 mpg US
31.4 mpg UK
5.1 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
229 hp/t
171 kW/t
4.4 kg/hp
9.8 L/100 km
24.0 mpg US
28.8 mpg UK
BMWZ4 (E89)35i
191 hp/t
143 kW/t
5.2 kg/hp
9.0 L/100 km
26.1 mpg US
31.4 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
5.3 s
5.1 s
Top speed
274 km/h
170 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,355 kg
2,987 lb
1,600 kg
3,527 lb
Fuel consumption
9.8 L/100 km
24.0 mpg US
28.8 mpg UK
9.0 L/100 km
26.1 mpg US
31.4 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
663 km
412 mi
611 km
380 mi
CO2 score
230 g/km
210 g/km
Trunk score
130 L
4.6 cu ft
-
Power-to-weight score
229 hp/t
171 kW/t
4.4 kg/hp
191 hp/t
143 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
Consumption9.8 L/100 km24 mpg US28.8 mpg UK9 L/100 km26.1 mpg US31.4 mpg UK
Cost / 100 km17.15 LC100 km15.75 LC100 km
Cost / 100 mi27.60 LC100 mi25.35 LC100 mi
Annual fuel used1,470 L388 US gal323 UK gal1,350 L357 US gal297 UK gal
Annual fuel cost2,573 LC/year2,363 LC/year

Head-to-head comparisons

Porsche Boxster (987) Facelift 2009 S 3.4

  • Has 4 hp more
  • Is 245 kg lighter
  • Has 9 km/h (6 mph) higher top speed
  • Has 38 hp/t better power-to-weight
  • Has 52 km (32 mi) more estimated range

Pros

  • Highest top speed
  • Most powerful
  • Lightest
  • Best power-to-weight ratio
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Highest CO2 emissions

BMW Z4 (E89) 35i

  • Has 40 Nm more
  • Is 0.2 s quicker from 0-100 km/h
  • Uses 0.8 L/100 km less fuel
  • Emits 20 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest torque
  • Lowest combined fuel consumption

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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