Ferrari Roma vs Bmw M850i xDrive Gran Coupe G15 : 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 96%Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 96 %.
Roma vs Bmw M850i xDrive Gran Coupe: chronicle of a drag race at 357 km/h
The launch: 0 to 100 km/h
Off the line, the Roma hits 100 km/h in 3.43 s versus 3.97 s for the Bmw M850i xDrive Gran Coupe. At this point, the Roma leads by 0.53 s and sits roughly 4 m ahead.
From 100 km/h to 400 metres
At 200 metres, the Roma is doing 182 km/h against 158 km/h for the Bmw M850i xDrive Gran Coupe. The gap is 0.65 s. The gap remains stable from the start.
At 400 metres standing start, the Roma crosses the line in 10.68 s versus 11.88 s. The 1.20 s gap represents roughly 64 m of track — a gap visible to the naked eye.
Beyond 400 metres: top speed comes into play
Past 400 metres, the Roma continues to build its lead. At 600 metres, it runs at 256 km/h versus 221 km/h. At 1,000 metres, the Roma finishes in 18.88 s versus 21.37 s, with a 2.49 s lead.
What the numbers don’t tell you
Electronically capped at 250 km/h, the Bmw M850i xDrive Gran Coupe never reaches its natural aerodynamic ceiling in this duel. That’s not a physical limit of the motor — it’s a deliberate manufacturer decision, typically tied to standard-fit tyre ratings or model-range positioning.
With two combustion powertrains, the difference comes down to power-to-weight ratio (2.37 kg/hp vs 3.79 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 5.71 seconds. The 0.53 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Ferrari Roma has a clear edge over the Bmw M850i xDrive Gran Coupe to 100 km/h. This difference is clearly noticeable in spirited driving and widens on standing starts.