Over 0–100 km/h, 840i Convertible G15 wins (5,36 s vs 5,73 s).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
| Measure | 840i Convertible G15 | 430i G22 | Gap |
|---|---|---|---|
| 0–100 km/h | 5.36 s | 5.73 s | 0.37 s · 840i Convertible G15 |
| 400 m standing start | 13.59 s | 13.98 s | 0.39 s · 840i Convertible G15 |
| 1,000 m standing start | 24.56 s | 25.35 s | 0.79 s · 840i Convertible G15 |
| Top speed (electronically limited) | 250 km/h | 250 km/h | Same |
| Power-to-weight ratio | 5.38 kg/hp | 5.99 kg/hp | better ratio · 840i Convertible G15 |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
| Stage | 840i Convertible G15 | 430i G22 |
|---|---|---|
| 0–30 km/h | 1.40 s · tight gap | 1.42 s |
| 0–50 km/h | 2.33 s · tight gap | 2.36 s |
| 0–80 km/h | 3.91 s | 4.12 s |
| 0–100 km/h | 5.36 s | 5.73 s |
| 0–120 km/h | 7.12 s | 7.73 s |
| 0–160 km/h | 11.98 s | 13.25 s |
| 0–200 km/h | 19.49 s | 22.00 s |
| 400 m standing start | 13.59 s | 13.98 s |
| 1,000 m standing start | 24.56 s | 25.35 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 | 340 hp | 6 cyl |
| Torque | 500 Nm | |
| Weight | 1 830 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | 8-speed Steptronic |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 258 hp | 4 cyl |
| Torque | 400 Nm | |
| Weight | 1 545 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | Eight-speed Steptronic transmission |
Off the line, the 840i Convertible hits 100 km/h in 5.36 s versus 5.73 s for the 430i. At this point, the 840i Convertible leads by 0.37 s and sits roughly 2 m ahead.
At 200 metres, the 840i Convertible is doing 137 km/h against 132 km/h for the 430i. The gap is 0.21 s. The challenger starts to claw back ground.
At 400 metres standing start, the 840i Convertible crosses the line in 13.59 s versus 13.97 s. The 0.39 s gap represents roughly 18 m of track - two to three car lengths.
Past 400 metres, the 840i Convertible continues to build its lead. At 600 metres, it runs at 191 km/h versus 185 km/h. At 1,000 metres, the 840i Convertible finishes in 24.56 s versus 25.35 s, with a 0.79 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 840i Convertible and the 430i 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 (5.38 kg/hp vs 5.99 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 8.91 seconds. The 0.37 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Over 0–100 km/h, 840i Convertible G15 wins (5,36 s vs 5,73 s).
840i Convertible G15 goes from 0 to 100 km/h in 5,36 seconds (calibrated simulation).
840i Convertible G15: 340 hp, ratio 5,38 kg/hp. 430i G22: 258 hp, ratio 5,99 kg/hp.
840i Convertible G15: 250 km/h. 430i G22: 250 km/h.