Over 0–100 km/h, M4 Convertible F82 wins (4,69 s vs 5,57 s).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
| Measure | M4 Convertible F82 | 840i Convertible G15 | Gap |
|---|---|---|---|
| 0–100 km/h | 4.69 s | 5.57 s | 0.88 s · M4 Convertible F82 |
| 400 m standing start | 12.65 s | 13.79 s | 1.14 s · M4 Convertible F82 |
| 1,000 m standing start | 22.52 s | 24.82 s | 2.30 s · M4 Convertible F82 |
| Top speed (electronically limited) | 250 km/h | 250 km/h | Same |
| Power-to-weight ratio | 4.15 kg/hp | 5.53 kg/hp | better ratio · M4 Convertible F82 |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
| Stage | M4 Convertible F82 | 840i Convertible G15 |
|---|---|---|
| 0–30 km/h | 1.38 s | 1.54 s |
| 0–50 km/h | 2.29 s | 2.50 s |
| 0–80 km/h | 3.63 s | 4.11 s |
| 0–100 km/h | 4.69 s | 5.57 s |
| 0–120 km/h | 5.96 s | 7.39 s |
| 0–160 km/h | 9.29 s | 12.34 s |
| 0–200 km/h | 14.14 s | 19.98 s |
| 400 m standing start | 12.65 s | 13.79 s |
| 1,000 m standing start | 22.52 s | 24.82 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 | 431 hp | 6 cyl |
| Torque | 550 Nm | |
| Weight | 1 790 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | 6-speed manual (7-speed M Steptronic with double clutch and Drivelogic) |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 333 hp | 6 cyl |
| Torque | 500 Nm | |
| Weight | 1 840 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | 8-speed Steptronic |
Off the line, the M4 Convertible hits 100 km/h in 4.69 s versus 5.57 s for the 840i Convertible. At this point, the M4 Convertible leads by 0.88 s and sits roughly 7 m ahead.
At 200 metres, the M4 Convertible is doing 151 km/h against 136 km/h for the 840i Convertible. The gap is 0.66 s. The challenger starts to claw back ground.
At 400 metres standing start, the M4 Convertible crosses the line in 12.64 s versus 13.79 s. The 1.15 s gap represents roughly 53 m of track - a gap visible to the naked eye.
Past 400 metres, the M4 Convertible continues to build its lead. At 600 metres, it runs at 213 km/h versus 190 km/h. At 1,000 metres, the M4 Convertible finishes in 22.51 s versus 24.82 s, with a 2.30 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 Convertible and the 840i 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 (4.15 kg/hp vs 5.53 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 8.44 seconds. The 0.88 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Over 0–100 km/h, M4 Convertible F82 wins (4,69 s vs 5,57 s).
M4 Convertible F82 goes from 0 to 100 km/h in 4,69 seconds (calibrated simulation).
M4 Convertible F82: 431 hp, ratio 4,15 kg/hp. 840i Convertible G15: 333 hp, ratio 5,53 kg/hp.
M4 Convertible F82: 250 km/h. 840i Convertible G15: 250 km/h.