Bmw M4 Convertible F82 vs Porsche 911 Carrera 4 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 4 Cabriolet: chronicle of a drag race at 283 km/h
The launch: 0 to 100 km/h
Off the line, the 911 Carrera 4 Cabriolet hits 100 km/h in 4.37 s versus 4.69 s for the Bmw M4 Convertible. At this point, the 911 Carrera 4 Cabriolet leads by 0.32 s and sits roughly 5 m ahead.
From 100 km/h to 400 metres
At 200 metres, the 911 Carrera 4 Cabriolet is doing 152 km/h against 151 km/h for the Bmw M4 Convertible. The gap is 0.23 s. The gap remains stable from the start.
At 400 metres standing start, the 911 Carrera 4 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 gap narrows. The Bmw M4 Convertible maxes out at 250 km/h while the 911 Carrera 4 Cabriolet keeps accelerating towards 283 km/h. At 600 metres, the gap has dropped to 0.21 s.
At 1,000 metres, the 911 Carrera 4 Cabriolet finishes in 22.38 s versus 22.51 s, with just 0.13 s to spare. The Bmw M4 Convertible fails to fully close the launch gap.
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 4 Cabriolet at 288 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 4.13 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 6.66 seconds. The 0.32 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Porsche 911 Carrera 4 Cabriolet is slightly faster than the Bmw M4 Convertible to 100 km/h. The edge holds on standing starts but may narrow at higher speeds depending on aerodynamic load.