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AM4vsB718Petrol
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  • SpecsM4 · 718

BMW M4 Convertible F82 vs Porsche 718 Boxster S: 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.

saloon · 2018 vs 2017 · Methodology
BMWPetrol

M4 Convertible F82

431 hp · 550 Nm · 1,790 kg · 2018

VS
PorschePetrolFaster

718 Boxster S

350 hp · 420 Nm · 1,355 kg · 2017

Result · 0–100 km/h

ABMW M4 Convertible F82

4.69 s

Gap0.53 sin favour of 718 Boxster S
BPorsche 718 Boxster S

4.16 s

Summary · Caralogy simulation
MeasureM4 Convertible F82718 Boxster SGap
0–100 km/h4.69 s4.16 s0.53 s · 718 Boxster S
400 m standing start12.65 s12.06 s0.59 s · 718 Boxster S
1,000 m standing start22.52 s21.70 s0.82 s · 718 Boxster S
Top speed (electronically limited)250 km/h285 km/h35 km/h · 718 Boxster S
Power-to-weight ratio4.15 kg/hp3.87 kg/hpbetter ratio · 718 Boxster S

Watch the race

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

BMWPetrolM4 Convertible F82
Speed
0km/h
Timer
0,00s
Distance
0m
PorschePetrol718 Boxster S
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.
StageM4 Convertible F82718 Boxster S
0–30 km/h1.38 s1.18 s
0–50 km/h2.29 s1.98 s
0–80 km/h3.63 s3.21 s
0–100 km/h4.69 s4.16 s
0–120 km/h5.96 s5.25 s
0–160 km/h9.29 s8.26 s
0–200 km/h14.14 s12.69 s
400 m standing start12.65 s12.06 s
1,000 m standing start22.52 s21.70 s
Top speed limited250 km/h285 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.

BMW

M4 Convertible F82

4,15kg/hpcompensated by −435 kg
CharacteristicValueDetail
Power431 hp6 cyl
Torque550 Nm
Weight1 790 kgmanufacturer kerb weight
Drivetrain-
Gearbox6-speed manual (7-speed M Steptronic with double clutch and Drivelogic)
Porsche

718 Boxster S

3,87kg/hpratio better by 0,28 kg/hp
CharacteristicValueDetail
Power350 hpB4
Torque420 Nm
Weight1 355 kgmanufacturer kerb weight
DrivetrainPropulsion
GearboxDUAL_CLUTCH

The start: 0 to 100 km/h

Off the line, the 718 Boxster S hits 100 km/h in 4.16 s versus 4.69 s for the M4 Convertible. At this point, the 718 Boxster S leads by 0.53 s and sits roughly 7 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 718 Boxster S is doing 157 km/h against 151 km/h for the M4 Convertible. The gap is 0.44 s. The gap remains stable from the start.

At 400 metres standing start, the 718 Boxster S crosses the line in 12.06 s versus 12.64 s. The 0.59 s gap represents roughly 31 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 718 Boxster S continues to build its lead. At 600 metres, it runs at 218 km/h versus 213 km/h. At 1,000 metres, the 718 Boxster S finishes in 21.69 s versus 22.51 s, with a 0.82 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the M4 Convertible is capped at 250 (i.e. 155 mph - industry threshold) km/h, the 718 Boxster S at 285 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 (4.15 kg/hp vs 3.87 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 6.66 seconds. The 0.53 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Compare with other alternatives

Swap one of the two models to explore an equivalent duel in the same segment.

Instead of M4 Convertible F82
BMW Z4 M40iBMW Z4 M40i

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Frequently asked questions

Over 0–100 km/h, 718 Boxster S wins (4,16 s vs 4,69 s).

M4 Convertible F82 goes from 0 to 100 km/h in 4,69 seconds (calibrated simulation).

M4 Convertible F82: 431 hp, ratio 4,15 kg/hp. 718 Boxster S: 350 hp, ratio 3,87 kg/hp.

M4 Convertible F82: 250 km/h. 718 Boxster S: 285 km/h.