Car comparison

BMW Z4 (E89) 35ivsPorsche Boxster (987) S 3.4

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

New comparison

BMW Z4 (E89)

35i

306 hp2979 ccGasolineRWDAutomaticTurbochargedRoadster2009-2013
VS

Porsche Boxster (987)

S 3.4

295 hp3387 ccGasolineRWDAutomaticNaturally aspiratedRoadster2006-2009

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
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    306 hp
    228 kW
  • 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 estimated range
    611 km
    380 mi
  • Best overall score
    56/100
  • Best performance score
    67/100
  • Best economy score
    83/100
  • Best practicality score
    32/100

Specification comparison

Specification comparison
ModelBMWZ4 (E89)35iPorscheBoxster (987)S 3.4
Power
306hp228kW
295hp220kW
Torque
400Nm295lb-ft
340Nm251lb-ft
Curb weight
1,600kg3,527lb
1,395kg3,075lb
Gross weight
1,855kg4,090lb
1,670kg3,682lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
264 km/h
164 mph
To 99% top speed
67.9s99% target: 262 km/h / 163 mph
Calculated
86.3s99% target: 261 km/h / 162 mph
Calculated
0-100 km/h
5.1s
6.1s
0-200 km/h
17.6s
Calculated
21.8s
0-60 mph
4.9s
Calculated
5.8s
Calculated
Fuel consumption
9L/100 km26.1mpg US31.4mpg UK
11L/100 km21.4mpg US25.7mpg UK
Fuel consumption city
12.6L/100 km18.7mpg US22.4mpg UK
16.3L/100 km14.4mpg US17.3mpg UK
Fuel consumption highway
6.9L/100 km34.1mpg US40.9mpg UK
7.9L/100 km29.8mpg US35.8mpg UK
Quarter mile
13.2s
Calculated
14.2s
Calculated
Power-to-weight
191hp/t143kW/t87hp/1000 lb
Calculated
211hp/t158kW/t96hp/1000 lb
Calculated
Torque-to-weight
250Nm/t167lb-ft/ton
Calculated
244Nm/t163lb-ft/ton
Calculated
Estimated range
611km380mi
Calculated
582km362mi
Calculated
Displacement
2,979cc182cu in
3,387cc207cu in
Length
4,239mm167in
4,329mm170in
Width
1,790mm70in
1,801mm71in
Height
1,291mm51in
1,292mm51in
Wheelbase
2,496mm98in
2,415mm95in
Front track
1,511mm59in
1,486mm59in
Rear track
1,559mm61in
1,528mm60in
Ground clearance-
121mm5in
Trunk volume-
130L
Doors
2
2
Seats
2
2
Fuel tank
55L
64L
CO2 emissions
210g/km
262g/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.

BMW Z4 (E89) 35iPorsche Boxster (987) S 3.4PowerTorque
  • BMW Z4 (E89) 35i: Power / Torque
  • Porsche Boxster (987) S 3.4: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMWZ4 (E89)35i5,800 rpm1,300-5,000 rpm6,050 rpm
PorscheBoxster (987)S 3.46,250 rpm4,400-6,000 rpm7,300 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMWZ4 (E89)35iPorscheBoxster (987)S 3.4
Acceleration checkpoints
0-60 mph
0-97 km/h
4.9 s
5.8 s
0-100 km/h
0-62 mph
5.1 s
6.1 s
0-200 km/h
0-124 mph
17.6 s
21.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
264 km/h
164 mph
Drag race simulation
60 ft
18 m
2.2 s
2.4 s
330 ft
101 m
5.8 s
6.2 s
1/8 mile
201 m
8.7 s
9.3 s
1000 ft
305 m
11.1 s
11.9 s
1/4 mile
402 m
13.2 s
14.2 s
Trap speed
1/4 mile
402 m
176 km/h
109 mph
165 km/h
102 mph

Power comparison

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

Chart data table
VehicleValue
BMWZ4 (E89)35i
306 hp
228 kW
PorscheBoxster (987)S 3.4
295 hp
220 kW

BMW Z4 (E89) 35i has 11 hp more than Porsche Boxster (987) S 3.4.

The biggest power difference is between Porsche Boxster (987) S 3.4 and BMW Z4 (E89) 35i: 11 hp (8 kW).

Torque comparison

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

Chart data table
VehicleValue
BMWZ4 (E89)35i
400 Nm
295 lb-ft
PorscheBoxster (987)S 3.4
340 Nm
251 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMWZ4 (E89)35i
1,600 kg
3,527 lb
PorscheBoxster (987)S 3.4
1,395 kg
3,075 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
BMWZ4 (E89)35i
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
PorscheBoxster (987)S 3.4
264 km/h
164 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
BMWZ4 (E89)35i5.1 s
PorscheBoxster (987)S 3.46.1 s

The biggest 0-100 km/h difference is between BMW Z4 (E89) 35i and Porsche Boxster (987) S 3.4: 1.0 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
BMWZ4 (E89)35i
9.0 L/100 km
26.1 mpg US
31.4 mpg UK
PorscheBoxster (987)S 3.4
11.0 L/100 km
21.4 mpg US
25.7 mpg UK

The biggest fuel consumption difference is between BMW Z4 (E89) 35i and Porsche Boxster (987) S 3.4: 2.0 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
BMWZ4 (E89)35i
191 hp/t
143 kW/t
5.2 kg/hp
PorscheBoxster (987)S 3.4
211 hp/t
158 kW/t
4.7 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMWZ4 (E89)35i
611 km
380 mi
PorscheBoxster (987)S 3.4
582 km
362 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMWZ4 (E89)35i
306 hp
228 kW
5.1 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
PorscheBoxster (987)S 3.4
295 hp
220 kW
6.1 s
264 km/h
164 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
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
PorscheBoxster (987)S 3.4
Power
295 hp
220 kW
0-100 km/h6.1 s
Top speed
264 km/h
164 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

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
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
PorscheBoxster (987)S 3.4
Power
295 hp
220 kW
0-100 km/h6.1 s
Top speed
264 km/h
164 mph
11.0 L/100 km
21.4 mpg US
25.7 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
BMWZ4 (E89)35i
9.0 L/100 km
26.1 mpg US
31.4 mpg UK
5.1 s
PorscheBoxster (987)S 3.4
11.0 L/100 km
21.4 mpg US
25.7 mpg UK
6.1 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
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
PorscheBoxster (987)S 3.4
211 hp/t
158 kW/t
4.7 kg/hp
11.0 L/100 km
21.4 mpg US
25.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMWZ4 (E89)35iPorscheBoxster (987)S 3.4
Power
306 hp
228 kW
295 hp
220 kW
Torque
400 Nm
295 lb-ft
340 Nm
251 lb-ft
Acceleration
5.1 s
6.1 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
264 km/h
164 mph
Lightness
1,600 kg
3,527 lb
1,395 kg
3,075 lb
Fuel consumption
9.0 L/100 km
26.1 mpg US
31.4 mpg UK
11.0 L/100 km
21.4 mpg US
25.7 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk-
Length
4,239 mm
166.9 in
Height
1,291 mm
50.8 in
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
Range score
611 km
380 mi
582 km
362 mi
CO2 score
210 g/km
262 g/km
Trunk score
-
130 L
4.6 cu ft
Power-to-weight score
191 hp/t
143 kW/t
5.2 kg/hp
211 hp/t
158 kW/t
4.7 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
VehicleBMW Z4 (E89) 35iPorsche Boxster (987) S 3.4
Consumption9 L/100 km26.1 mpg US31.4 mpg UK11 L/100 km21.4 mpg US25.7 mpg UK
Cost / 100 km15.75 LC100 km19.25 LC100 km
Cost / 100 mi25.35 LC100 mi30.98 LC100 mi
Annual fuel used1,350 L357 US gal297 UK gal1,650 L436 US gal363 UK gal
Annual fuel cost2,363 LC/year2,888 LC/year

Head-to-head comparisons

BMW Z4 (E89) 35i

  • Has 11 hp more
  • Has 60 Nm more
  • Is 1.0 s quicker from 0-100 km/h
  • Has 1 km/h (1 mph) higher top speed
  • Uses 2.0 L/100 km less fuel
  • Has 29 km (18 mi) more estimated range
  • Emits 52 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Heaviest

Porsche Boxster (987) S 3.4

  • Is 205 kg lighter
  • Has 20 hp/t better power-to-weight

Pros

  • Lightest
  • Best power-to-weight ratio

Cons

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

Choose cars to compare

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

Popular comparisons

35i
M40i
VS
BMWZ4 (E89)35ivsBMWZ4 (G29)M40i
S 3.4
S 3.4
VS
PorscheBoxster (987)S 3.4vsPorscheBoxster (987)Facelift 2009S 3.4
35i
3.0i
VS
BMWZ4 (E89)35ivsBMWZ4 (E85)3.0i
S 3.4
S 3.2
VS
PorscheBoxster (987)S 3.4vsPorscheBoxster (986)S 3.2
35i
M40i
VS
BMWZ4 (E89)35ivsBMWZ4 (G29 LCI)Facelift 2022M40i
S 3.4
2.7
VS
PorscheBoxster (987)S 3.4vsPorscheBoxster (981)2.7
35i
M 3.2
VS
BMWZ4 (E89)35ivsBMWZ4 Coupe (E86)M 3.2
S 3.4
3.5i V6 24V
VS
PorscheBoxster (987)S 3.4vsNissan350Z Roadster (Z33)Facelift 20073.5i V6 24V
35i
SLK 350 V6
VS
BMWZ4 (E89)35ivsMercedes-BenzSLK (R171)Facelift 2008SLK 350 V6
S 3.4
2.0 TFSI
VS
PorscheBoxster (987)S 3.4vsAUDITTS Roadster (8J)2.0 TFSI
35i
SLK 350 V6
VS
BMWZ4 (E89)35ivsMercedes-BenzSLK (R172)SLK 350 V6
S 3.4
SLK 350 V6
VS
PorscheBoxster (987)S 3.4vsMercedes-BenzSLK (R171)SLK 350 V6
BMW Z4 (E89) 35i vs Porsche Boxster (987) S 3.4 - car comparison - FastVsFaster