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A718PetrolvsB420dDiesel
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  • Specs718 · 420d

Porsche 718 Cayman GTS vs BMW 420d F32: 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 · 2018 vs 2020 · Methodology
PorschePetrolFaster

718 Cayman GTS

365 hp · 420 Nm · 1,375 kg · 2018

VS
BMWDiesel

420d F32

190 hp · 400 Nm · 1,605 kg · 2020

Result · 0–100 km/h

APorsche 718 Cayman GTS

4.46 s

Gap2.58 sin favour of 718 Cayman GTS
BBMW 420d F32

7.04 s

Summary · Caralogy simulation
Measure718 Cayman GTS420d F32Gap
0–100 km/h4.46 s7.04 s2.58 s · 718 Cayman GTS
400 m standing start12.32 s15.11 s2.79 s · 718 Cayman GTS
1,000 m standing start21.97 s27.78 s5.81 s · 718 Cayman GTS
Top speed (electronically limited)290 km/h240 km/h50 km/h · 718 Cayman GTS
Power-to-weight ratio3.77 kg/hp8.45 kg/hpbetter ratio · 718 Cayman GTS

Watch the race

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

PorschePetrol718 Cayman GTS
Speed
0km/h
Timer
0,00s
Distance
0m
BMWDiesel420d F32
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.
Stage718 Cayman GTS420d F32
0–30 km/h1.21 s1.37 s
0–50 km/h2.02 s2.40 s
0–80 km/h3.52 s4.80 s
0–100 km/h4.46 s7.04 s
0–120 km/h5.50 s9.85 s
0–160 km/h8.63 s18.13 s
0–200 km/h13.06 s33.30 s
400 m standing start12.32 s15.11 s
1,000 m standing start21.97 s27.78 s
Top speed290 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

718 Cayman GTS

3,77kg/hpratio better by 4,68 kg/hp
CharacteristicValueDetail
Power365 hpB4
Torque420 Nm
Weight1 375 kgmanufacturer kerb weight
DrivetrainPropulsion
GearboxMANUAL
BMW

420d F32

8,45kg/hpcompensated by −230 kg
CharacteristicValueDetail
Power190 hp4 cyl
Torque400 Nm
Weight1 605 kgmanufacturer kerb weight
Drivetrain-
GearboxEight-speed Steptronic transmission

The start: 0 to 100 km/h

Off the line, the 718 Cayman GTS hits 100 km/h in 4.47 s versus 7.04 s for the 420d. At this point, the 718 Cayman GTS leads by 2.58 s and sits roughly 11 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 718 Cayman GTS is doing 155 km/h against 119 km/h for the 420d. The gap is 1.53 s. The challenger starts to claw back ground.

At 400 metres standing start, the 718 Cayman GTS crosses the line in 12.32 s versus 15.10 s. The 2.79 s gap represents roughly 109 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 718 Cayman GTS continues to build its lead. At 600 metres, it runs at 217 km/h versus 166 km/h. At 1,000 metres, the 718 Cayman GTS finishes in 21.96 s versus 27.77 s, with a 5.81 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the 718 Cayman GTS is capped at 290 km/h, the 420d 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 (3.77 kg/hp vs 8.45 kg/hp) and transmission (Manual vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 11.60 seconds. The 2.58 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Other duels you might be interested in

PorscheVSBMW

718 Cayman GTS vs Z4 M40i

AudiVSBMW

A4 40 TDI vs 420d

PorscheVSBMW

718 Cayman GTS vs Z4 M40i

VolvoVSBMW

S60 B4 vs 420d

Frequently asked questions

Over 0–100 km/h, 718 Cayman GTS wins (4,46 s vs 7,04 s).

718 Cayman GTS goes from 0 to 100 km/h in 4,46 seconds (calibrated simulation).

718 Cayman GTS: 365 hp, ratio 3,77 kg/hp. 420d F32: 190 hp, ratio 8,45 kg/hp.

718 Cayman GTS: 290 km/h. 420d F32: 240 km/h.