Over 0–100 km/h, M850i xDrive G15 wins (3,83 s vs 4,73 s).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
| Measure | M850i xDrive G15 | 840d xDrive G15 | Gap |
|---|---|---|---|
| 0–100 km/h | 3.83 s | 4.73 s | 0.90 s · M850i xDrive G15 |
| 400 m standing start | 11.71 s | 13.00 s | 1.29 s · M850i xDrive G15 |
| 1,000 m standing start | 21.08 s | 23.59 s | 2.51 s · M850i xDrive G15 |
| Top speed (electronically limited) | 250 km/h | 250 km/h | Same |
| Power-to-weight ratio | 3.64 kg/hp | 5.63 kg/hp | better ratio · M850i xDrive G15 |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
| Stage | M850i xDrive G15 | 840d xDrive G15 |
|---|---|---|
| 0–30 km/h | 1.10 s | 1.29 s |
| 0–50 km/h | 1.83 s | 2.06 s |
| 0–80 km/h | 2.89 s | 3.45 s |
| 0–100 km/h | 3.83 s | 4.73 s |
| 0–120 km/h | 4.88 s | 6.33 s |
| 0–160 km/h | 7.71 s | 10.67 s |
| 0–200 km/h | 11.70 s | 17.19 s |
| 400 m standing start | 11.71 s | 13.00 s |
| 1,000 m standing start | 21.08 s | 23.59 s |
| Top speed limited | 250 km/h | 250 km/h |
Physics model calibrated on manufacturer splits. The limited top speed is not the real aerodynamic top speed of the vehicles.
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 | 1 930 kg | manufacturer kerb weight |
| Drivetrain | Integrale (AWD) | |
| Gearbox | 8-speed Steptronic |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 340 hp | 6 cyl |
| Torque | 700 Nm | |
| Weight | 1 915 kg | manufacturer kerb weight |
| Drivetrain | Integrale (AWD) | |
| Gearbox | 8-speed Steptronic |
Off the line, the M850i xDrive hits 100 km/h in 3.83 s versus 4.73 s for the 840d xDrive. At this point, the M850i xDrive leads by 0.90 s and sits roughly 7 m ahead.
At 200 metres, the M850i xDrive is doing 160 km/h against 142 km/h for the 840d xDrive. The gap is 0.77 s. The challenger starts to claw back ground.
At 400 metres standing start, the M850i xDrive crosses the line in 11.71 s versus 13.00 s. The 1.29 s gap represents roughly 62 m of track - a gap visible to the naked eye.
Past 400 metres, the M850i xDrive continues to build its lead. At 600 metres, it runs at 224 km/h versus 198 km/h. At 1,000 metres, the M850i xDrive finishes in 21.07 s versus 23.58 s, with a 2.51 s lead. Both vehicles have similar top speeds (250 (i.e. 155 mph - industry threshold) vs 250 (i.e. 155 mph - industry threshold) km/h), preventing any comeback.
Both rivals share the same electronic speed cap: the M850i xDrive and the 840d xDrive are governed to 250 (i.e. 155 mph - industry threshold) km/h. At that speed, standard-fit tyres approach their safety threshold - an industrial ceiling common to most electric vehicles in this segment. Neither car shows its true aerodynamic potential in this duel.
With two combustion powertrains, the difference comes down to power-to-weight ratio (3.64 kg/hp vs 5.63 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.26 seconds. The 0.90 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Over 0–100 km/h, M850i xDrive G15 wins (3,83 s vs 4,73 s).
M850i xDrive G15 goes from 0 to 100 km/h in 3,83 seconds (calibrated simulation).
M850i xDrive G15: 530 hp, ratio 3,64 kg/hp. 840d xDrive G15: 340 hp, ratio 5,63 kg/hp.
M850i xDrive G15: 250 km/h. 840d xDrive G15: 250 km/h.