Over 0–100 km/h, P7 wins (4,21 s vs 5,30 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.
| P7 | 840i xDrive Convertible G15 | |
|---|---|---|
| 0–100 km/h | 4,21 s−1,08 s | 5,30 s |
| 400 m standing start | 12,55 s−1,02 s | 13,57 s |
| 1,000 m standing start | 25,25 s | 24,59 s+0,66 s |
| Top speed (electronically limited) | 170 km/h | 250 km/h−80 km/h |
| Power-to-weight ratio | 4,81 kg/hpbetter ratio | 5,75 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 | P7 | 840i xDrive Convertible G15 |
|---|---|---|
| 0–30 km/h | 1,11 s | 1,36 s |
| 0–50 km/h | 1,85 s | 2,25 s |
| 0–80 km/h | 3,09 s | 3,85 s |
| 0–100 km/h | 4,21 s | 5,30 s |
| 0–120 km/h | 5,64 s | 7,11 s |
| 0–160 km/h | 9,67 s | 12,08 s |
| 0–200 km/h | - | 19,74 s |
| 400 m standing start | 12,55 s | 13,57 s |
| 1,000 m standing start | 25,25 s | 24,59 s |
| Top speed limited | 170 km/h | 250 km/h |
Manufacturer technical specifications. The power-to-weight ratio is the key physical factor in a drag race.
| 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 |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 333 hp | 6 cyl |
| Torque | 500 Nm | |
| Weight | 1 915 kg | manufacturer kerb weight |
| Drivetrain | Integrale (AWD) | |
| Gearbox | 8-speed Steptronic |
Off the line, the P7 hits 100 km/h in 4.22 s versus 5.30 s for the 840i xDrive Convertible. The instant torque of 655 Nm from the electric motor makes the difference. At this point, the P7 leads by 1.09 s and sits roughly 10 m ahead.
At 200 metres, the P7 is doing 147 km/h against 136 km/h for the 840i xDrive Convertible. The gap is 0.76 s. The challenger starts to claw back ground.
At 400 metres standing start, the P7 crosses the line in 12.54 s versus 13.56 s. The 1.02 s gap represents roughly 47 m of track - a gap visible to the naked eye.
Past 400 metres, the situation changes. The P7 maxes out at 170 km/h while the 840i xDrive Convertible keeps accelerating towards 250 (i.e. 155 mph - industry threshold) km/h. At 600 metres, the gap has dropped to 0.78 s.
Around 847 metres, both vehicles are level. This is the inversion point: the 840i xDrive Convertible overcomes its launch deficit thanks to a 80 km/h higher top speed.
At 1,000 metres, the 840i xDrive Convertible finishes in 24.59 s versus 25.24 s. The 0.66 s delta in favour of the 840i xDrive Convertible shows that top speed makes a clear difference.
Both rivals are electronically governed, but not at the same level: the P7 is capped at 170 km/h, the 840i xDrive Convertible at 250 (i.e. 155 mph - industry threshold) 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 8.18 seconds. The 1.09 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Over 0–100 km/h, P7 wins (4,21 s vs 5,30 s).
P7 goes from 0 to 100 km/h in 4,21 seconds (calibrated simulation).
P7: 424 hp, ratio 4,81 kg/hp. 840i xDrive Convertible G15: 333 hp, ratio 5,75 kg/hp.
P7: 170 km/h. 840i xDrive Convertible G15: 250 km/h.