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Porsche Boxster PDK vs BMW Z4 sDrive20i G29: which is truly faster?

Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.

sports car · 2010 vs 2018 · Methodology
PorschePetrolFaster

Boxster PDK

259 hp · 290 Nm · 1,365 kg · 2010

VS
BMWPetrol

Z4 sDrive20i G29

197 hp · 320 Nm · 1,405 kg · 2018

Result · 0–100 km/h

APorsche Boxster PDK

5.46 s

Gap1.20 sin favour of Boxster PDK
BBMW Z4 sDrive20i G29

6.65 s

Summary · Caralogy simulation
MeasureBoxster PDKZ4 sDrive20i G29Gap
0–100 km/h5.46 s6.65 s1.20 s · Boxster PDK
400 m standing start13.60 s14.83 s1.23 s · Boxster PDK
1,000 m standing start24.54 s26.78 s2.24 s · Boxster PDK
Top speed (electronically limited)258 km/h240 km/h18 km/h · Boxster PDK
Power-to-weight ratio5.27 kg/hp7.13 kg/hpbetter ratio · Boxster PDK

Watch the race

Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.

PorschePetrolBoxster PDK
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrolZ4 sDrive20i G29
Speed
0km/h
Timer
0,00s
Distance
0m
100 m
200 m
300 m
400 m
500 m
600 m
700 m
800 m
900 m
1000 m
0m → 1000m
Gap0m

Stage-by-stage comparison

Simulated performance at each stage. Best value in bold.
StageBoxster PDKZ4 sDrive20i G29
0–30 km/h1.48 s1.71 s
0–50 km/h2.42 s2.87 s
0–80 km/h4.00 s4.86 s
0–100 km/h5.46 s6.65 s
0–120 km/h7.09 s8.95 s
0–160 km/h11.75 s15.48 s
0–200 km/h19.23 s26.97 s
400 m standing start13.60 s14.83 s
1,000 m standing start24.54 s26.78 s
Top speed258 km/h240 km/h

Parameters and assumptions

Simulation

Start
Standing, straight line
Surface
Dry asphalt, 23°C
Wind
None
Driver
1 person, 75 kg

Calibration

Splits
0–100, 0–200 manufacturer
Power curve
Real measurement (Caralogy)
VMax
Manufacturer limited
Transmission
Losses integrated in model

Physics model calibrated on manufacturer splits. The limited top speed is not the real aerodynamic top speed of the vehicles.

Under the bonnet

Manufacturer technical specifications. The power-to-weight ratio is the key physical factor in a drag race.

Porsche

Boxster PDK

5,27kg/hpratio better by 1,86 kg/hp
CharacteristicValueDetail
Power259 hp6 cyl
Torque290 Nm
Weight1 365 kgmanufacturer kerb weight
DrivetrainPropulsion
GearboxDUAL_CLUTCH
BMW

Z4 sDrive20i G29

7,13kg/hp
CharacteristicValueDetail
Power197 hp4 cyl
Torque320 Nm
Weight1 405 kgmanufacturer kerb weight
Drivetrain-
GearboxEight-speed Steptronic transmission

The start: 0 to 100 km/h

Off the line, the Boxster PDK hits 100 km/h in 5.46 s versus 6.65 s for the Z4 sDrive20i. At this point, the Boxster PDK leads by 1.20 s and sits roughly 12 m ahead.

From 100 km/h to 400 metres

At 200 metres, the Boxster PDK is doing 137 km/h against 126 km/h for the Z4 sDrive20i. The gap is 0.79 s. The challenger starts to claw back ground.

At 400 metres standing start, the Boxster PDK crosses the line in 13.59 s versus 14.82 s. The 1.23 s gap represents roughly 52 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the Boxster PDK continues to build its lead. At 600 metres, it runs at 193 km/h versus 176 km/h. At 1,000 metres, the Boxster PDK finishes in 24.54 s versus 26.78 s, with a 2.24 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the Boxster PDK is capped at 261 km/h, the Z4 sDrive20i at 240 km/h. This isn’t a physical engine limit - it’s a manufacturer choice, usually for tyre safety or homologation reasons. Neither car reaches its true aerodynamic top speed.

With two combustion powertrains, the difference comes down to power-to-weight ratio (5.27 kg/hp vs 7.13 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 10.30 seconds. The 1.20 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Other duels you might be interested in

PorscheVSBMW

Boxster PDK vs Z4 sDrive30i

AudiVSBMW

TT 45 TFSI vs Z4 sDrive20i

PorscheVSBMW

Boxster PDK vs Z4 sDrive30i

PorscheVSBMW

Boxster vs Z4 sDrive20i

Frequently asked questions

Over 0–100 km/h, Boxster PDK wins (5,46 s vs 6,65 s).

Boxster PDK goes from 0 to 100 km/h in 5,46 seconds (calibrated simulation).

Boxster PDK: 259 hp, ratio 5,27 kg/hp. Z4 sDrive20i G29: 197 hp, ratio 7,13 kg/hp.

Boxster PDK: 258 km/h. Z4 sDrive20i G29: 240 km/h.