Over 0–100 km/h, M850i xDrive Convertible G15 wins (3,96 s vs 4,21 s).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
Simulation
Calibration
Physics model calibrated on manufacturer splits. The limited top speed is not the real aerodynamic top speed of the vehicles.
| M850i xDrive Convertible G15 | P7 | |
|---|---|---|
| 0–100 km/h | 3,96 s−0,26 s | 4,21 s |
| 400 m standing start | 11,83 s−0,72 s | 12,55 s |
| 1,000 m standing start | 21,13 s−4,12 s | 25,25 s |
| Top speed (electronically limited) | 250 km/h+80 km/h | 170 km/h |
| Power-to-weight ratio | 3,87 kg/hpbetter ratio | 4,81 kg/hp |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
Simulated performance at each stage. Winner in green.
| Palier | M850i xDrive Convertible G15 | P7 |
|---|---|---|
| 0–30 km/h | 1,22 s | 1,11 stight gap |
| 0–50 km/h | 1,99 s | 1,85 stight gap |
| 0–80 km/h | 3,10 s | 3,09 stight gap |
| 0–100 km/h | 3,96 s | 4,21 s |
| 0–120 km/h | 5,00 s | 5,64 s |
| 0–160 km/h | 7,79 s | 9,67 s |
| 0–200 km/h | 11,74 s | - |
| 400 m standing start | 11,83 s | 12,55 s |
| 1,000 m standing start | 21,13 s | 25,25 s |
| Top speed limited | 250 km/h | 170 km/h |
Manufacturer technical specifications. The power-to-weight ratio is the key physical factor in a drag race.
| Characteristic | Value | Detail |
|---|---|---|
| Power | 530 hp | 8 cyl |
| Torque | 750 Nm | |
| Weight | 2 050 kg | manufacturer kerb weight |
| Drivetrain | Integrale (AWD) | |
| Gearbox | 8-speed Steptronic |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 424 hp | Dual Permanent Magnet Synchronous Motor |
| Torque | 655 Nm | |
| Weight | 2 040 kg | manufacturer kerb weight |
| Drivetrain | Integrale (AWD) | |
| Gearbox | Single-speed fixed gear |
Off the line, the M850i xDrive Convertible hits 100 km/h in 3.96 s versus 4.22 s for the P7. Despite lacking instant torque, 530 hp of power compensates. Despite the faster sprint time, the P7 is 2 m further along the track at this moment: stronger low-speed acceleration offsets a slower run beyond 100 km/h.
At 200 metres, the M850i xDrive Convertible is doing 161 km/h against 147 km/h for the P7. The gap is 0.26 s. The gap remains stable from the start.
At 400 metres standing start, the M850i xDrive Convertible crosses the line in 11.82 s versus 12.54 s. The 0.72 s gap represents roughly 34 m of track - a gap visible to the naked eye.
Past 400 metres, the M850i xDrive Convertible continues to build its lead. At 600 metres, it runs at 226 km/h versus 170 km/h. At 1,000 metres, the M850i xDrive Convertible finishes in 21.13 s versus 25.24 s, with a 4.12 s lead.
Both rivals are electronically governed, but not at the same level: the M850i xDrive Convertible is capped at 250 (i.e. 155 mph - industry threshold) km/h, the P7 at 170 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.
Instant electric torque gives an advantage off the line. The higher top speed of the combustion engine gives an advantage over longer distances. The distance at which one catches the other depends on the top speed differential.
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 6.49 seconds. The 0.26 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Over 0–100 km/h, M850i xDrive Convertible G15 wins (3,96 s vs 4,21 s).
M850i xDrive Convertible G15 goes from 0 to 100 km/h in 3,96 seconds (calibrated simulation).
M850i xDrive Convertible G15: 530 hp, ratio 3,87 kg/hp. P7: 424 hp, ratio 4,81 kg/hp.
M850i xDrive Convertible G15: 250 km/h. P7: 170 km/h.