Over 0–100 km/h, M140i xDrive F20LCI wins (4,43 s vs 6,90 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 | 120i F40 | Gap |
|---|---|---|---|
| 0–100 km/h | 4.43 s | 6.90 s | 2.47 s · M140i xDrive F20LCI |
| 400 m standing start | 12.64 s | 15.01 s | 2.37 s · M140i xDrive F20LCI |
| 1,000 m standing start | 23.01 s | 27.23 s | 4.22 s · M140i xDrive F20LCI |
| Top speed (electronically limited) | 250 km/h | 235 km/h | 15 km/h · M140i xDrive F20LCI |
| Power-to-weight ratio | 4.53 kg/hp | 7.81 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 | 120i F40 |
|---|---|---|
| 0–30 km/h | 1.21 s | 1.65 s |
| 0–50 km/h | 2.00 s | 2.77 s |
| 0–80 km/h | 3.29 s | 4.88 s |
| 0–100 km/h | 4.43 s | 6.90 s |
| 0–120 km/h | 5.86 s | 9.30 s |
| 0–160 km/h | 9.81 s | 16.47 s |
| 0–200 km/h | 15.81 s | 29.09 s |
| 400 m standing start | 12.64 s | 15.01 s |
| 1,000 m standing start | 23.01 s | 27.23 s |
| Top speed limited | 250 km/h | 235 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 | 178 hp | 4 cyl |
| Torque | 280 Nm | |
| Weight | 1 390 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | Seven-speed Steptronic dual-clutch transmission |
Off the line, the M140i xDrive hits 100 km/h in 4.43 s versus 6.90 s for the 120i. At this point, the M140i xDrive leads by 2.47 s and sits roughly 18 m ahead.
At 200 metres, the M140i xDrive is doing 147 km/h against 123 km/h for the 120i. The gap is 1.55 s. The challenger starts to claw back ground.
At 400 metres standing start, the M140i xDrive crosses the line in 12.64 s versus 15.01 s. The 2.37 s gap represents roughly 97 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 172 km/h. At 1,000 metres, the M140i xDrive finishes in 23.01 s versus 27.23 s, with a 4.22 s lead.
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 120i at 235 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 7.81 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 10.91 seconds. The 2.47 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 6,90 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. 120i F40: 178 hp, ratio 7,81 kg/hp.
M140i xDrive F20LCI: 250 km/h. 120i F40: 235 km/h.