Over 0–100 km/h, Roma wins (3,43 s vs 5,49 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.
| Roma | 840i Gran Coupe G15 | |
|---|---|---|
| 0–100 km/h | 3,43 s−2,06 s | 5,49 s |
| 400 m standing start | 10,68 s−3,05 s | 13,73 s |
| 1,000 m standing start | 18,88 s−5,93 s | 24,81 s |
| Top speed (electronically limited) | 357 km/h+107 km/h | 250 km/h |
| Power-to-weight ratio | 2,37 kg/hpbetter ratio | 5,45 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 | Roma | 840i Gran Coupe G15 |
|---|---|---|
| 0–30 km/h | 1,03 s | 1,43 s |
| 0–50 km/h | 1,71 s | 2,39 s |
| 0–80 km/h | 2,75 s | 4,00 s |
| 0–100 km/h | 3,43 s | 5,49 s |
| 0–120 km/h | 4,14 s | 7,31 s |
| 0–160 km/h | 5,92 s | 12,35 s |
| 0–200 km/h | 8,39 s | 20,22 s |
| 400 m standing start | 10,68 s | 13,73 s |
| 1,000 m standing start | 18,88 s | 24,81 s |
| Top speed limited | 357 km/h | 250 km/h |
Manufacturer technical specifications. The power-to-weight ratio is the key physical factor in a drag race.
| Characteristic | Value | Detail |
|---|---|---|
| Power | 620 hp | Pending |
| Torque | 760 Nm | |
| Weight | 1 472 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | 8-speed dual-clutch |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 333 hp | Pending |
| Torque | 500 Nm | |
| Weight | 1 815 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | 8-speed Steptronic |
Off the line, the Roma hits 100 km/h in 3.43 s versus 5.49 s for the 840i Gran Coupe. At this point, the Roma leads by 2.06 s and sits roughly 14 m ahead.
At 200 metres, the Roma is doing 182 km/h against 135 km/h for the 840i Gran Coupe. The gap is 1.82 s. The challenger starts to claw back ground.
At 400 metres standing start, the Roma crosses the line in 10.68 s versus 13.72 s. The 3.05 s gap represents roughly 134 m of track - a gap visible to the naked eye.
Past 400 metres, the Roma continues to build its lead. At 600 metres, it runs at 256 km/h versus 189 km/h. At 1,000 metres, the Roma finishes in 18.88 s versus 24.81 s, with a 5.93 s lead.
Electronically capped at 250 (i.e. 155 mph - industry threshold) km/h, the 840i Gran Coupe never reaches its natural aerodynamic ceiling in this duel. That’s not a physical limit of the motor - it’s a deliberate manufacturer decision, typically tied to standard-fit tyre ratings or model-range positioning.
With two combustion powertrains, the difference comes down to power-to-weight ratio (2.37 kg/hp vs 5.45 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 8.39 seconds. The 2.06 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Over 0–100 km/h, Roma wins (3,43 s vs 5,49 s).
Roma goes from 0 to 100 km/h in 3,43 seconds (calibrated simulation).
Roma: 620 hp, ratio 2,37 kg/hp. 840i Gran Coupe G15: 333 hp, ratio 5,45 kg/hp.
Roma: 357 km/h. 840i Gran Coupe G15: 250 km/h.