Over 0–100 km/h, 840d xDrive Convertible G15 wins (5,06 s vs 7,72 s).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
7.72 s
| Measure | 840d xDrive Convertible G15 | A5 Avant | Gap |
|---|---|---|---|
| 0–100 km/h | 5.06 s | 7.72 s | 2.66 s · 840d xDrive Convertible G15 |
| 400 m standing start | 13.36 s | 15.71 s | 2.35 s · 840d xDrive Convertible G15 |
| 1,000 m standing start | 24.32 s | 27.94 s | 3.62 s · 840d xDrive Convertible G15 |
| Top speed (electronically limited) | 250 km/h | 245 km/h | 5 km/h · 840d xDrive Convertible G15 |
| Power-to-weight ratio | 5.97 kg/hp | 8.38 kg/hp | better ratio · 840d xDrive Convertible G15 |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
| Stage | 840d xDrive Convertible G15 | A5 Avant |
|---|---|---|
| 0–30 km/h | 1.30 s | 2.12 s |
| 0–50 km/h | 2.09 s | 3.53 s |
| 0–80 km/h | 3.63 s | 5.76 s |
| 0–100 km/h | 5.06 s | 7.72 s |
| 0–120 km/h | 6.85 s | 10.23 s |
| 0–160 km/h | 11.73 s | 17.35 s |
| 0–200 km/h | 19.21 s | 29.43 s |
| 400 m standing start | 13.36 s | 15.71 s |
| 1,000 m standing start | 24.32 s | 27.94 s |
| Top speed limited | 250 km/h | 245 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 | 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 | 204 hp | Pending |
| Torque | 340 Nm | |
| Weight | 1 710 kg | manufacturer kerb weight |
| Drivetrain | Traction | |
| Gearbox | 7-speed S tronic |
Off the line, the 840d xDrive Convertible hits 100 km/h in 5.06 s versus 7.72 s for the A5 Avant. At this point, the 840d xDrive Convertible leads by 2.66 s and sits roughly 28 m ahead.
At 200 metres, the 840d xDrive Convertible is doing 137 km/h against 122 km/h for the A5 Avant. The gap is 1.78 s. The challenger starts to claw back ground.
At 400 metres standing start, the 840d xDrive Convertible crosses the line in 13.36 s versus 15.70 s. The 2.34 s gap represents roughly 95 m of track - a gap visible to the naked eye.
Past 400 metres, the 840d xDrive Convertible continues to build its lead. At 600 metres, it runs at 192 km/h versus 172 km/h. At 1,000 metres, the 840d xDrive Convertible finishes in 24.31 s versus 27.94 s, with a 3.63 s lead. Both vehicles have similar top speeds (250 (i.e. 155 mph - industry threshold) vs 245 km/h), preventing any comeback.
The 840d xDrive Convertible features all-wheel drive (AWD) against the A5 Avant’s FWD. At low speeds (0-30, 0-50, 0-80 km/h), AWD doubles the driven contact area: all four wheels transmit torque to the road, virtually eliminating wheelspin at launch. This traction advantage is decisive in the range where the motor delivers peak torque, before power and aerodynamics take over.
Both rivals are electronically governed, but not at the same level: the 840d xDrive Convertible is capped at 250 (i.e. 155 mph - industry threshold) km/h, the A5 Avant at 245 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 (5.97 kg/hp vs 8.38 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 11.72 seconds. The 2.66 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, 840d xDrive Convertible G15 wins (5,06 s vs 7,72 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. A5 Avant: 204 hp, ratio 8,38 kg/hp.
840d xDrive Convertible G15: 250 km/h. A5 Avant: 245 km/h.