Over 0–100 km/h, M140i xDrive F20LCI wins (4,43 s vs 7,75 s).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
| Measure | M140i xDrive F20LCI | 420d Convertible G22 | Gap |
|---|---|---|---|
| 0–100 km/h | 4.43 s | 7.75 s | 3.32 s · M140i xDrive F20LCI |
| 400 m standing start | 12.64 s | 15.64 s | 3.00 s · M140i xDrive F20LCI |
| 1,000 m standing start | 23.01 s | 28.69 s | 5.68 s · M140i xDrive F20LCI |
| Top speed (electronically limited) | 250 km/h | 236 km/h | 14 km/h · M140i xDrive F20LCI |
| Power-to-weight ratio | 4.53 kg/hp | 9.34 kg/hp | better ratio · M140i xDrive F20LCI |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
| Stage | M140i xDrive F20LCI | 420d Convertible G22 |
|---|---|---|
| 0–30 km/h | 1.21 s | 1.52 s |
| 0–50 km/h | 2.00 s | 2.64 s |
| 0–80 km/h | 3.29 s | 5.29 s |
| 0–100 km/h | 4.43 s | 7.75 s |
| 0–120 km/h | 5.86 s | 10.87 s |
| 0–160 km/h | 9.81 s | 20.11 s |
| 0–200 km/h | 15.81 s | 37.54 s |
| 400 m standing start | 12.64 s | 15.64 s |
| 1,000 m standing start | 23.01 s | 28.69 s |
| Top speed limited | 250 km/h | 236 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 | 1 540 kg | manufacturer kerb weight |
| Drivetrain | Integrale (AWD) | |
| Gearbox | 8-speed Steptronic |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 190 hp | 4 cyl |
| Torque | 400 Nm | |
| Weight | 1 775 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | Eight-speed Steptronic transmission |
Off the line, the M140i xDrive hits 100 km/h in 4.43 s versus 7.75 s for the 420d Convertible. At this point, the M140i xDrive leads by 3.32 s and sits roughly 17 m ahead.
At 200 metres, the M140i xDrive is doing 147 km/h against 116 km/h for the 420d Convertible. The gap is 1.83 s. The challenger starts to claw back ground.
At 400 metres standing start, the M140i xDrive crosses the line in 12.64 s versus 15.64 s. The 3.00 s gap represents roughly 114 m of track - a gap visible to the naked eye.
Past 400 metres, the M140i xDrive continues to build its lead. At 600 metres, it runs at 203 km/h versus 161 km/h. At 1,000 metres, the M140i xDrive finishes in 23.01 s versus 28.69 s, with a 5.68 s lead. Both vehicles have similar top speeds (250 (i.e. 155 mph - industry threshold) vs 236 km/h), preventing any comeback.
Both rivals are electronically governed, but not at the same level: the M140i xDrive is capped at 250 (i.e. 155 mph - industry threshold) km/h, the 420d Convertible at 236 km/h. This isn’t a physical engine limit - it’s a manufacturer choice, usually for tyre safety or homologation reasons. Neither car reaches its true aerodynamic top speed.
With two combustion powertrains, the difference comes down to power-to-weight ratio (4.53 kg/hp vs 9.34 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 12.82 seconds. The 3.32 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Over 0–100 km/h, M140i xDrive F20LCI wins (4,43 s vs 7,75 s).
M140i xDrive F20LCI goes from 0 to 100 km/h in 4,43 seconds (calibrated simulation).
M140i xDrive F20LCI: 340 hp, ratio 4,53 kg/hp. 420d Convertible G22: 190 hp, ratio 9,34 kg/hp.
M140i xDrive F20LCI: 250 km/h. 420d Convertible G22: 236 km/h.