Over 0–100 km/h, M4 G82 wins (4,19 s vs 5,06 s).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
| Measure | M4 G82 | 840d xDrive Convertible G15 | Gap |
|---|---|---|---|
| 0–100 km/h | 4.19 s | 5.06 s | 0.87 s · M4 G82 |
| 400 m standing start | 12.23 s | 13.36 s | 1.13 s · M4 G82 |
| 1,000 m standing start | 21.86 s | 24.32 s | 2.46 s · M4 G82 |
| Top speed (electronically limited) | 250 km/h | 250 km/h | Same |
| Power-to-weight ratio | 3.54 kg/hp | 5.97 kg/hp | better ratio · M4 G82 |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
| Stage | M4 G82 | 840d xDrive Convertible G15 |
|---|---|---|
| 0–30 km/h | 1.22 s · tight gap | 1.30 s |
| 0–50 km/h | 2.04 s · tight gap | 2.09 s |
| 0–80 km/h | 3.31 s | 3.63 s |
| 0–100 km/h | 4.19 s | 5.06 s |
| 0–120 km/h | 5.52 s | 6.85 s |
| 0–160 km/h | 8.63 s | 11.73 s |
| 0–200 km/h | 13.02 s | 19.21 s |
| 400 m standing start | 12.23 s | 13.36 s |
| 1,000 m standing start | 21.86 s | 24.32 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 | 480 hp | 6 cyl |
| Torque | 550 Nm | |
| Weight | 1 700 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | Six-speed manual |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 340 hp | 6 cyl |
| Torque | 700 Nm | |
| Weight | 2 030 kg | manufacturer kerb weight |
| Drivetrain | Integrale (AWD) | |
| Gearbox | 8-speed Steptronic |
Off the line, the M4 hits 100 km/h in 4.19 s versus 5.06 s for the 840d xDrive Convertible. At this point, the M4 leads by 0.87 s and sits roughly 4 m ahead.
At 200 metres, the M4 is doing 155 km/h against 137 km/h for the 840d xDrive Convertible. The gap is 0.59 s. The challenger starts to claw back ground.
At 400 metres standing start, the M4 crosses the line in 12.23 s versus 13.36 s. The 1.13 s gap represents roughly 53 m of track - a gap visible to the naked eye.
Past 400 metres, the M4 continues to build its lead. At 600 metres, it runs at 219 km/h versus 192 km/h. At 1,000 metres, the M4 finishes in 21.86 s versus 24.31 s, with a 2.46 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 M4 and the 840d xDrive Convertible 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 (3.54 kg/hp vs 5.97 kg/hp) and transmission (Manual vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.89 seconds. The 0.87 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Over 0–100 km/h, M4 G82 wins (4,19 s vs 5,06 s).
M4 G82 goes from 0 to 100 km/h in 4,19 seconds (calibrated simulation).
M4 G82: 480 hp, ratio 3,54 kg/hp. 840d xDrive Convertible G15: 340 hp, ratio 5,97 kg/hp.
M4 G82: 250 km/h. 840d xDrive Convertible G15: 250 km/h.