Over 0–100 km/h, M340d xDrive Touring G20 wins (4,87 s vs 5,12 s).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
| Measure | M340d xDrive Touring G20 | 840i G15 | Gap |
|---|---|---|---|
| 0–100 km/h | 4.87 s | 5.12 s | 0.25 s · M340d xDrive Touring G20 |
| 400 m standing start | 13.17 s | 13.34 s | 0.17 s · M340d xDrive Touring G20 |
| 1,000 m standing start | 24.08 s | 24.04 s | 0.04 s · 840i G15 |
| Top speed (electronically limited) | 250 km/h | 250 km/h | Same |
| Power-to-weight ratio | 5.53 kg/hp | 5.20 kg/hp | better ratio · 840i G15 |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
| Stage | M340d xDrive Touring G20 | 840i G15 |
|---|---|---|
| 0–30 km/h | 1.14 s | 1.42 s |
| 0–50 km/h | 1.89 s | 2.34 s |
| 0–80 km/h | 3.46 s | 3.81 s |
| 0–100 km/h | 4.87 s | 5.12 s |
| 0–120 km/h | 6.62 s · tight gap | 6.75 s |
| 0–160 km/h | 11.44 s | 11.20 s |
| 0–200 km/h | 18.80 s | 18.00 s |
| 400 m standing start | 13.17 s | 13.34 s |
| 1,000 m standing start | 24.08 s | 24.04 s · tight gap |
| Top speed limited | 250 km/h | 250 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 | 1 880 kg | manufacturer kerb weight |
| Drivetrain | Integrale (AWD) | |
| Gearbox | Eight-speed Steptronic transmission |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 333 hp | 6 cyl |
| Torque | 500 Nm | |
| Weight | 1 730 kg | manufacturer kerb weight |
| Drivetrain | Propulsion | |
| Gearbox | 8-speed Steptronic |
Off the line, the M340d xDrive Touring hits 100 km/h in 4.87 s versus 5.12 s for the 840i. At this point, the M340d xDrive Touring leads by 0.25 s and sits roughly 8 m ahead.
At 200 metres, the M340d xDrive Touring is doing 138 km/h against 140 km/h for the 840i. The gap is 0.25 s. The gap remains stable from the start.
At 400 metres standing start, the M340d xDrive Touring crosses the line in 13.17 s versus 13.33 s. The 0.16 s gap represents roughly 8 m of track - barely a car length.
Past 400 metres, the situation changes. Past 400 metres, both rivals hit the same electronic ceiling at 250 (i.e. 155 mph - industry threshold) km/h. Neither can claw back ground through top speed - the outcome hinges on the acceleration curve between 100 and 250 (i.e. 155 mph - industry threshold) km/h.
At 1,000 metres, the 840i finishes in 24.04 s versus 24.08 s. The 0.04 s delta shows an extremely tight race.
The M340d xDrive Touring features all-wheel drive (AWD) against the 840i’s RWD. 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 share the same electronic speed cap: the M340d xDrive Touring and the 840i are governed to 250 (i.e. 155 mph - industry threshold) km/h. At that speed, standard-fit tyres approach their safety threshold - an industrial ceiling common to most electric vehicles in this segment. Neither car shows its true aerodynamic potential in this duel.
With two combustion powertrains, the difference comes down to power-to-weight ratio (5.53 kg/hp vs 5.20 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.71 seconds. The 0.25 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Over 0–100 km/h, M340d xDrive Touring G20 wins (4,87 s vs 5,12 s).
M340d xDrive Touring G20 goes from 0 to 100 km/h in 4,87 seconds (calibrated simulation).
M340d xDrive Touring G20: 340 hp, ratio 5,53 kg/hp. 840i G15: 333 hp, ratio 5,20 kg/hp.
M340d xDrive Touring G20: 250 km/h. 840i G15: 250 km/h.