Over 0–100 km/h, 125i F20LCI wins (6,15 s vs 7,12 s).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
| Measure | 125i F20LCI | 120i F20LCI | Gap |
|---|---|---|---|
| 0–100 km/h | 6.15 s | 7.12 s | 0.97 s · 125i F20LCI |
| 400 m standing start | 14.36 s | 15.22 s | 0.86 s · 125i F20LCI |
| 1,000 m standing start | 25.91 s | 27.53 s | 1.62 s · 125i F20LCI |
| Top speed (electronically limited) | 243 km/h | 225 km/h | 18 km/h · 125i F20LCI |
| Power-to-weight ratio | 6.25 kg/hp | 7.47 kg/hp | better ratio · 125i F20LCI |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
| Stage | 125i F20LCI | 120i F20LCI |
|---|---|---|
| 0–30 km/h | 1.66 s · tight gap | 1.79 s |
| 0–50 km/h | 2.77 s | 2.99 s |
| 0–80 km/h | 4.57 s | 5.16 s |
| 0–100 km/h | 6.15 s | 7.12 s |
| 0–120 km/h | 8.17 s | 9.70 s |
| 0–160 km/h | 13.86 s | 16.79 s |
| 0–200 km/h | 23.72 s | 29.61 s |
| 400 m standing start | 14.36 s | 15.22 s |
| 1,000 m standing start | 25.91 s | 27.53 s |
| Top speed | 243 km/h | 225 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 | 224 hp | 4 cyl |
| Torque | 310 Nm | |
| Weight | 1 400 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | 8-speed Steptronic |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 184 hp | 4 cyl |
| Torque | 270 Nm | |
| Weight | 1 375 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | 8-speed Steptronic |
Off the line, the 125i hits 100 km/h in 6.15 s versus 7.12 s for the 120i. At this point, the 125i leads by 0.97 s and sits roughly 8 m ahead.
At 200 metres, the 125i is doing 131 km/h against 122 km/h for the 120i. The gap is 0.52 s. The challenger starts to claw back ground.
At 400 metres standing start, the 125i crosses the line in 14.35 s versus 15.22 s. The 0.87 s gap represents roughly 36 m of track - a gap visible to the naked eye.
Past 400 metres, the 125i continues to build its lead. At 600 metres, it runs at 182 km/h versus 170 km/h. At 1,000 metres, the 125i finishes in 25.91 s versus 27.52 s, with a 1.62 s lead.
Both rivals are electronically governed, but not at the same level: the 125i is capped at 243 km/h, the 120i at 225 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 (6.25 kg/hp vs 7.47 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 11.27 seconds. The 0.97 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Swap one of the two models to explore an equivalent duel in the same segment.
Over 0–100 km/h, 125i F20LCI wins (6,15 s vs 7,12 s).
125i F20LCI goes from 0 to 100 km/h in 6,15 seconds (calibrated simulation).
125i F20LCI: 224 hp, ratio 6,25 kg/hp. 120i F20LCI: 184 hp, ratio 7,47 kg/hp.
125i F20LCI: 243 km/h. 120i F20LCI: 225 km/h.