Over 0–100 km/h, SQ2 wins (4,94 s vs 5,06 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.
| 840d xDrive Convertible G15 | SQ2 | |
|---|---|---|
| 0–100 km/h | 5,06 s | 4,94 s+0,12 s |
| 400 m standing start | 13,36 s−0,11 s | 13,47 s |
| 1,000 m standing start | 24,32 s−0,23 s | 24,55 s |
| Top speed (electronically limited) | 250 km/h | 257 km/h−7 km/h |
| Power-to-weight ratio | 5,97 kg/hp | 5,12 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 | 840d xDrive Convertible G15 | SQ2 |
|---|---|---|
| 0–30 km/h | 1,30 s | 1,24 stight gap |
| 0–50 km/h | 2,09 s | 2,07 stight gap |
| 0–80 km/h | 3,63 s | 3,54 stight gap |
| 0–100 km/h | 5,06 s | 4,94 stight gap |
| 0–120 km/h | 6,85 s | 7,19 s |
| 0–160 km/h | 11,73 s | 12,14 s |
| 0–200 km/h | 19,21 s | 19,93 s |
| 400 m standing start | 13,36 s | 13,47 stight gap |
| 1,000 m standing start | 24,32 s | 24,55 s |
| Top speed limited | 250 km/h | 257 km/h |
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 | 700 Nm | |
| Weight | 2 030 kg | manufacturer kerb weight |
| Drivetrain | Integrale (AWD) | |
| Gearbox | 8-speed Steptronic |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 300 hp | Pending |
| Torque | 400 Nm | |
| Weight | 1 535 kg | manufacturer kerb weight |
| Drivetrain | Integrale (AWD) | |
| Gearbox | 7-speed S tronic |
Off the line, the SQ2 hits 100 km/h in 4.94 s versus 5.06 s for the 840d xDrive Convertible. At this point, the SQ2 leads by 0.12 s and sits roughly 2 m ahead.
At 200 metres, the 840d xDrive Convertible is doing 137 km/h against 133 km/h for the SQ2. The gap is 0.02 s. The gap remains stable from the start.
At 400 metres standing start, the 840d xDrive Convertible crosses the line in 13.36 s versus 13.47 s. The 0.11 s gap represents roughly 5 m of track - barely a car length.
Past 400 metres, the 840d xDrive Convertible continues to build its lead. At 600 metres, it runs at 192 km/h versus 190 km/h. At 1,000 metres, the 840d xDrive Convertible finishes in 24.31 s versus 24.55 s, with a 0.24 s lead. Both vehicles have similar top speeds (250 (i.e. 155 mph - industry threshold) vs 257 km/h), preventing any comeback.
Electronically capped at 250 (i.e. 155 mph - industry threshold) km/h, the 840d xDrive Convertible 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 (5.97 kg/hp vs 5.12 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 8.36 seconds. The 0.12 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Over 0–100 km/h, SQ2 wins (4,94 s vs 5,06 s).
840d xDrive Convertible G15 goes from 0 to 100 km/h in 5,06 seconds (calibrated simulation).
840d xDrive Convertible G15: 340 hp, ratio 5,97 kg/hp. SQ2: 300 hp, ratio 5,12 kg/hp.
840d xDrive Convertible G15: 250 km/h. SQ2: 257 km/h.