Over 0–100 km/h, 420d F32 and 120i F20LCI are neck and neck (7,04 s vs 7,12 s, no significant gap).
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.
| 420d F32 | 120i F20LCI | |
|---|---|---|
| 0–100 km/h | 7,04 s−0,08 s | 7,12 s |
| 400 m standing start | 15,11 s−0,11 s | 15,22 s |
| 1,000 m standing start | 27,78 s | 27,53 s+0,25 s |
| Top speed (electronically limited) | 240 km/h+15 km/h | 225 km/h |
| Power-to-weight ratio | 8,45 kg/hp | 7,47 kg/hpbetter ratio |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
Simulated performance at each stage. Winner in green.
| Palier | 420d F32 | 120i F20LCI |
|---|---|---|
| 0–30 km/h | 1,37 s | 1,79 s |
| 0–50 km/h | 2,40 s | 2,99 s |
| 0–80 km/h | 4,80 s | 5,16 s |
| 0–100 km/h | 7,04 s | 7,12 stight gap |
| 0–120 km/h | 9,85 s | 9,70 s |
| 0–160 km/h | 18,13 s | 16,79 s |
| 0–200 km/h | 33,30 s | 29,61 s |
| 400 m standing start | 15,11 s | 15,22 stight gap |
| 1,000 m standing start | 27,78 s | 27,53 s |
| Top speed | 240 km/h | 225 km/h |
Manufacturer technical specifications. The power-to-weight ratio is the key physical factor in a drag race.
| Characteristic | Value | Detail |
|---|---|---|
| Power | 190 hp | 4 cyl |
| Torque | 400 Nm | |
| Weight | 1 605 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | Eight-speed Steptronic transmission |
| 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 Bmw 420d hits 100 km/h in 7.04 s versus 7.12 s for the Bmw 120i. The 0.08 s gap is negligible: both vehicles are neck and neck.
At 200 metres, the Bmw 420d is doing 119 km/h against 122 km/h for the Bmw 120i. The gap is 0.27 s. The gap widens compared to the 0-100.
At 400 metres standing start, the Bmw 420d crosses the line in 15.10 s versus 15.22 s. The 0.12 s gap represents roughly 5 m of track - barely a car length.
Past 400 metres, the situation changes. The Bmw 120i maxes out at 225 km/h while the Bmw 420d keeps accelerating towards 240 km/h. At 600 metres, the gap has dropped to 0.03 s.
Around 548 metres, both vehicles are level. This is the inversion point: the Bmw 120i overcomes its launch deficit thanks to a 15 km/h higher top speed.
At 1,000 metres, the Bmw 120i finishes in 27.52 s versus 27.77 s. The 0.25 s delta shows an extremely tight race.
Both rivals are electronically governed, but not at the same level: the Bmw 420d is capped at 240 km/h, the Bmw 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 (8.45 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 11.60 seconds. The 0.08 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, 420d F32 and 120i F20LCI are neck and neck (7,04 s vs 7,12 s, no significant gap).
420d F32 goes from 0 to 100 km/h in 7,04 seconds (calibrated simulation).
420d F32: 190 hp, ratio 8,45 kg/hp. 120i F20LCI: 184 hp, ratio 7,47 kg/hp.
420d F32: 240 km/h. 120i F20LCI: 225 km/h.