Over 0–100 km/h, M140i F20LCI wins (4,54 s vs 5,57 s).
Performance comparison
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.
| M140i F20LCI | 840i Convertible G15 | |
|---|---|---|
| 0–100 km/h | 4,54 s−1,03 s | 5,57 s |
| 400 m standing start | 12,60 s−1,19 s | 13,79 s |
| 1,000 m standing start | 22,65 s−2,17 s | 24,82 s |
| Top speed (electronically limited) | 250 km/h | 250 km/h |
| Power-to-weight ratio | 4,32 kg/hpbetter ratio | 5,53 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 | M140i F20LCI | 840i Convertible G15 |
|---|---|---|
| 0–30 km/h | 1,37 s | 1,54 s |
| 0–50 km/h | 2,25 s | 2,50 s |
| 0–80 km/h | 3,51 s | 4,11 s |
| 0–100 km/h | 4,54 s | 5,57 s |
| 0–120 km/h | 5,82 s | 7,39 s |
| 0–160 km/h | 9,32 s | 12,34 s |
| 0–200 km/h | 14,54 s | 19,98 s |
| 400 m standing start | 12,60 s | 13,79 s |
| 1,000 m standing start | 22,65 s | 24,82 s |
| Top speed limited | 250 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 | 340 hp | 6 cyl |
| Torque | 500 Nm | |
| Weight | 1 470 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | 8-speed Steptronic |
| 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 M140i hits 100 km/h in 4.54 s versus 5.57 s for the 840i Convertible. At this point, the M140i leads by 1.03 s and sits roughly 8 m ahead.
At 200 metres, the M140i is doing 151 km/h against 136 km/h for the 840i Convertible. The gap is 0.73 s. The challenger starts to claw back ground.
At 400 metres standing start, the M140i crosses the line in 12.60 s versus 13.79 s. The 1.19 s gap represents roughly 55 m of track - a gap visible to the naked eye.
Past 400 metres, the M140i continues to build its lead. At 600 metres, it runs at 210 km/h versus 190 km/h. At 1,000 metres, the M140i finishes in 22.65 s versus 24.82 s, with a 2.17 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 M140i 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 (4.32 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 1.03 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Over 0–100 km/h, M140i F20LCI wins (4,54 s vs 5,57 s).
M140i F20LCI goes from 0 to 100 km/h in 4,54 seconds (calibrated simulation).
M140i F20LCI: 340 hp, ratio 4,32 kg/hp. 840i Convertible G15: 333 hp, ratio 5,53 kg/hp.
M140i F20LCI: 250 km/h. 840i Convertible G15: 250 km/h.