Over 0–100 km/h, S4 TDI wins (4,83 s vs 6,63 s).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
| Measure | S4 TDI | 225i xDrive Active Tourer F44 | Gap |
|---|---|---|---|
| 0–100 km/h | 4.83 s | 6.63 s | 1.79 s · S4 TDI |
| 400 m standing start | 13.12 s | 14.83 s | 1.71 s · S4 TDI |
| 1,000 m standing start | 23.86 s | 26.93 s | 3.07 s · S4 TDI |
| Top speed (electronically limited) | 250 km/h | 234 km/h | 16 km/h · S4 TDI |
| Power-to-weight ratio | 5.10 kg/hp | 6.58 kg/hp | better ratio · S4 TDI |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
| Stage | S4 TDI | 225i xDrive Active Tourer F44 |
|---|---|---|
| 0–30 km/h | 1.27 s | 1.73 s |
| 0–50 km/h | 2.06 s | 2.83 s |
| 0–80 km/h | 3.50 s | 4.83 s |
| 0–100 km/h | 4.83 s | 6.63 s |
| 0–120 km/h | 6.50 s | 8.96 s |
| 0–160 km/h | 11.04 s | 15.73 s |
| 0–200 km/h | 17.95 s | 28.72 s |
| 400 m standing start | 13.12 s | 14.83 s |
| 1,000 m standing start | 23.86 s | 26.93 s |
| Top speed limited | 250 km/h | 234 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 | 354 hp | Pending |
| Torque | 700 Nm | |
| Weight | 1 805 kg | manufacturer kerb weight |
| Drivetrain | Integrale (AWD) | |
| Gearbox | 8-speed tiptronic |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 231 hp | 4 cyl |
| Torque | 350 Nm | |
| Weight | 1 520 kg | manufacturer kerb weight |
| Drivetrain | Integrale (AWD) | |
| Gearbox | 8-speed Steptronic |
Off the line, the S4 TDI hits 100 km/h in 4.84 s versus 6.63 s for the 225i xDrive Active Tourer. At this point, the S4 TDI leads by 1.80 s and sits roughly 18 m ahead.
At 200 metres, the S4 TDI is doing 140 km/h against 126 km/h for the 225i xDrive Active Tourer. The gap is 1.19 s. The challenger starts to claw back ground.
At 400 metres standing start, the S4 TDI crosses the line in 13.12 s versus 14.83 s. The 1.71 s gap represents roughly 72 m of track - a gap visible to the naked eye.
Past 400 metres, the S4 TDI continues to build its lead. At 600 metres, it runs at 195 km/h versus 174 km/h. At 1,000 metres, the S4 TDI finishes in 23.86 s versus 26.93 s, with a 3.07 s lead.
Both rivals are electronically governed, but not at the same level: the S4 TDI is capped at 250 (i.e. 155 mph - industry threshold) km/h, the 225i xDrive Active Tourer at 235 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 (5.10 kg/hp vs 6.58 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 10.33 seconds. The 1.80 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Over 0–100 km/h, S4 TDI wins (4,83 s vs 6,63 s).
S4 TDI goes from 0 to 100 km/h in 4,83 seconds (calibrated simulation).
S4 TDI: 354 hp, ratio 5,10 kg/hp. 225i xDrive Active Tourer F44: 231 hp, ratio 6,58 kg/hp.
S4 TDI: 250 km/h. 225i xDrive Active Tourer F44: 234 km/h.