Over 0–100 km/h, 840i Gran Coupe G15 wins (5,46 s vs 5,81 s).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
| Measure | 840i Gran Coupe G15 | TT 45 TFSI | Gap |
|---|---|---|---|
| 0–100 km/h | 5.46 s | 5.81 s | 0.35 s · 840i Gran Coupe G15 |
| 400 m standing start | 13.70 s | 14.07 s | 0.37 s · 840i Gran Coupe G15 |
| 1,000 m standing start | 24.69 s | 25.49 s | 0.80 s · 840i Gran Coupe G15 |
| Top speed (electronically limited) | 250 km/h | 251 km/h | 1 km/h · TT 45 TFSI |
| Power-to-weight ratio | 5.45 kg/hp | 5.43 kg/hp | better ratio · TT 45 TFSI |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
| Stage | 840i Gran Coupe G15 | TT 45 TFSI |
|---|---|---|
| 0–30 km/h | 1.50 s · tight gap | 1.56 s |
| 0–50 km/h | 2.46 s · tight gap | 2.60 s |
| 0–80 km/h | 4.03 s | 4.29 s |
| 0–100 km/h | 5.46 s | 5.81 s |
| 0–120 km/h | 7.25 s | 7.75 s |
| 0–160 km/h | 12.12 s | 13.21 s |
| 0–200 km/h | 19.69 s | 22.61 s |
| 400 m standing start | 13.70 s | 14.07 s |
| 1,000 m standing start | 24.69 s | 25.49 s |
| Top speed limited | 250 km/h | 251 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 | 333 hp | 6 cyl |
| Torque | 500 Nm | |
| Weight | 1 815 kg | manufacturer kerb weight |
| Drivetrain | - | |
| 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 840i Gran Coupe hits 100 km/h in 5.46 s versus 5.81 s for the TT 45 TFSI. At this point, the 840i Gran Coupe leads by 0.35 s and sits roughly 4 m ahead.
At 200 metres, the 840i Gran Coupe is doing 137 km/h against 133 km/h for the TT 45 TFSI. The gap is 0.23 s. The challenger starts to claw back ground.
At 400 metres standing start, the 840i Gran Coupe crosses the line in 13.69 s versus 14.06 s. The 0.37 s gap represents roughly 17 m of track - two to three car lengths.
Past 400 metres, the 840i Gran Coupe continues to build its lead. At 600 metres, it runs at 191 km/h versus 184 km/h. At 1,000 metres, the 840i Gran Coupe finishes in 24.68 s versus 25.49 s, with a 0.81 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.
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 (5.45 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 0.35 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Over 0–100 km/h, 840i Gran Coupe G15 wins (5,46 s vs 5,81 s).
840i Gran Coupe G15 goes from 0 to 100 km/h in 5,46 seconds (calibrated simulation).
840i Gran Coupe G15: 333 hp, ratio 5,45 kg/hp. TT 45 TFSI: 245 hp, ratio 5,43 kg/hp.
840i Gran Coupe G15: 250 km/h. TT 45 TFSI: 251 km/h.