Over 0–100 km/h, 840d xDrive G15 wins (4,73 s vs 5,81 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 G15 | TT 45 TFSI | |
|---|---|---|
| 0–100 km/h | 4,73 s−1,08 s | 5,81 s |
| 400 m standing start | 13,00 s−1,07 s | 14,07 s |
| 1,000 m standing start | 23,59 s−1,90 s | 25,49 s |
| Top speed (electronically limited) | 250 km/h | 251 km/h−1 km/h |
| Power-to-weight ratio | 5,63 kg/hp | 5,43 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 G15 | TT 45 TFSI |
|---|---|---|
| 0–30 km/h | 1,29 s | 1,56 s |
| 0–50 km/h | 2,06 s | 2,60 s |
| 0–80 km/h | 3,45 s | 4,29 s |
| 0–100 km/h | 4,73 s | 5,81 s |
| 0–120 km/h | 6,33 s | 7,75 s |
| 0–160 km/h | 10,67 s | 13,21 s |
| 0–200 km/h | 17,19 s | 22,61 s |
| 400 m standing start | 13,00 s | 14,07 s |
| 1,000 m standing start | 23,59 s | 25,49 s |
| Top speed limited | 250 km/h | 251 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 | 1 915 kg | manufacturer kerb weight |
| Drivetrain | Integrale (AWD) | |
| Gearbox | 8-speed Steptronic |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 245 hp | Pending |
| Torque | 370 Nm | |
| Weight | 1 330 kg | manufacturer kerb weight |
| Drivetrain | Traction | |
| Gearbox | 7-speed S tronic |
Off the line, the Bmw 840d xDrive hits 100 km/h in 4.73 s versus 5.81 s for the TT 45 TFSI. At this point, the Bmw 840d xDrive leads by 1.08 s and sits roughly 13 m ahead.
At 200 metres, the Bmw 840d xDrive is doing 142 km/h against 133 km/h for the TT 45 TFSI. The gap is 0.76 s. The challenger starts to claw back ground.
At 400 metres standing start, the Bmw 840d xDrive crosses the line in 13.00 s versus 14.06 s. The 1.07 s gap represents roughly 48 m of track - a gap visible to the naked eye.
Past 400 metres, the Bmw 840d xDrive continues to build its lead. At 600 metres, it runs at 198 km/h versus 184 km/h. At 1,000 metres, the Bmw 840d xDrive finishes in 23.58 s versus 25.49 s, with a 1.91 s lead. Both vehicles have similar top speeds (250 (i.e. 155 mph - industry threshold) vs 251 (i.e. 155 mph - industry threshold) km/h), preventing any comeback.
The Bmw 840d xDrive features all-wheel drive (AWD) against the TT 45 TFSI’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.
Electronically capped at 250 (i.e. 155 mph - industry threshold) km/h, the Bmw 840d xDrive 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 (5.63 kg/hp vs 5.43 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 8.89 seconds. The 1.08 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Over 0–100 km/h, 840d xDrive G15 wins (4,73 s vs 5,81 s).
840d xDrive G15 goes from 0 to 100 km/h in 4,73 seconds (calibrated simulation).
840d xDrive G15: 340 hp, ratio 5,63 kg/hp. TT 45 TFSI: 245 hp, ratio 5,43 kg/hp.
840d xDrive G15: 250 km/h. TT 45 TFSI: 251 km/h.