Over 0–100 km/h, X5 M50d F15 wins (5,15 s vs 7,12 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.
| X5 M50d F15 | 120i F20LCI | |
|---|---|---|
| 0–100 km/h | 5,15 s−1,97 s | 7,12 s |
| 400 m standing start | 13,47 s−1,75 s | 15,22 s |
| 1,000 m standing start | 24,61 s−2,92 s | 27,53 s |
| Top speed (electronically limited) | 250 km/h+25 km/h | 225 km/h |
| Power-to-weight ratio | 5,69 kg/hpbetter ratio | 7,47 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 | X5 M50d F15 | 120i F20LCI |
|---|---|---|
| 0–30 km/h | 1,33 s | 1,79 s |
| 0–50 km/h | 2,15 s | 2,99 s |
| 0–80 km/h | 3,71 s | 5,16 s |
| 0–100 km/h | 5,15 s | 7,12 s |
| 0–120 km/h | 6,95 s | 9,70 s |
| 0–160 km/h | 12,03 s | 16,79 s |
| 0–200 km/h | 20,34 s | 29,61 s |
| 400 m standing start | 13,47 s | 15,22 s |
| 1,000 m standing start | 24,61 s | 27,53 s |
| Top speed limited | 250 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 | 400 hp | 6 cyl |
| Torque | 760 Nm | |
| Weight | 2 275 kg | manufacturer kerb weight |
| Drivetrain | Integrale (AWD) | |
| 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 X5 M50d hits 100 km/h in 5.15 s versus 7.12 s for the Bmw 120i. At this point, the Bmw X5 M50d leads by 1.97 s and sits roughly 19 m ahead.
At 200 metres, the Bmw X5 M50d is doing 136 km/h against 122 km/h for the Bmw 120i. The gap is 1.22 s. The challenger starts to claw back ground.
At 400 metres standing start, the Bmw X5 M50d crosses the line in 13.47 s versus 15.22 s. The 1.75 s gap represents roughly 72 m of track - a gap visible to the naked eye.
Past 400 metres, the Bmw X5 M50d continues to build its lead. At 600 metres, it runs at 189 km/h versus 170 km/h. At 1,000 metres, the Bmw X5 M50d finishes in 24.60 s versus 27.52 s, with a 2.92 s lead.
Both rivals are electronically governed, but not at the same level: the Bmw X5 M50d is capped at 250 (i.e. 155 mph - industry threshold) 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 (5.69 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 1.97 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, X5 M50d F15 wins (5,15 s vs 7,12 s).
X5 M50d F15 goes from 0 to 100 km/h in 5,15 seconds (calibrated simulation).
X5 M50d F15: 400 hp, ratio 5,69 kg/hp. 120i F20LCI: 184 hp, ratio 7,47 kg/hp.
X5 M50d F15: 250 km/h. 120i F20LCI: 225 km/h.