Bmw M4 Convertible F82 vs Porsche 911 Carrera Cabriolet 991.2 : which one is faster?
0-100 km/h, 400 m, 1000 m, top speed — physics simulation calibrated on 7 measures.
Simulation de performance
Race simulation at real speed
CONFIDENCE 91%Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 91 %.
Bmw M4 Convertible vs 911 Carrera Cabriolet: chronicle of a drag race at 286 km/h
The launch: 0 to 100 km/h
Off the line, the 911 Carrera Cabriolet hits 100 km/h in 4.43 s versus 4.69 s for the Bmw M4 Convertible. At this point, the 911 Carrera Cabriolet leads by 0.26 s and sits roughly 4 m ahead.
From 100 km/h to 400 metres
At 200 metres, the 911 Carrera Cabriolet is doing 153 km/h against 151 km/h for the Bmw M4 Convertible. The gap is 0.19 s. The gap remains stable from the start.
At 400 metres standing start, the 911 Carrera Cabriolet crosses the line in 12.42 s versus 12.64 s. The 0.23 s gap represents roughly 12 m of track — two to three car lengths.
Beyond 400 metres: top speed comes into play
Past 400 metres, the 911 Carrera Cabriolet continues to build its lead. At 600 metres, it runs at 214 km/h versus 213 km/h. At 1,000 metres, the 911 Carrera Cabriolet finishes in 22.28 s versus 22.51 s, with a 0.24 s lead.
What the numbers don’t tell you
Both rivals are electronically governed, but not at the same level: the Bmw M4 Convertible is capped at 250 km/h, the 911 Carrera Cabriolet at 291 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 4.00 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 0.26 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Bmw M4 Convertible and Porsche 911 Carrera Cabriolet are virtually tied to 100 km/h. The gap is under a tenth of a second — only the physics engine can settle it step by step.