Over 0–100 km/h, 718 Boxster wins (4,64 s vs 5,57 s).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
| Measure | 840i Convertible G15 | 718 Boxster | Gap |
|---|---|---|---|
| 0–100 km/h | 5.57 s | 4.64 s | 0.93 s · 718 Boxster |
| 400 m standing start | 13.79 s | 12.76 s | 1.03 s · 718 Boxster |
| 1,000 m standing start | 24.82 s | 23.08 s | 1.74 s · 718 Boxster |
| Top speed (electronically limited) | 250 km/h | 274 km/h | 24 km/h · 718 Boxster |
| Power-to-weight ratio | 5.53 kg/hp | 4.45 kg/hp | better ratio · 718 Boxster |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
| Stage | 840i Convertible G15 | 718 Boxster |
|---|---|---|
| 0–30 km/h | 1.54 s | 1.28 s |
| 0–50 km/h | 2.50 s | 2.13 s |
| 0–80 km/h | 4.11 s | 3.50 s |
| 0–100 km/h | 5.57 s | 4.64 s |
| 0–120 km/h | 7.39 s | 6.02 s |
| 0–160 km/h | 12.34 s | 9.81 s |
| 0–200 km/h | 19.98 s | 15.72 s |
| 400 m standing start | 13.79 s | 12.76 s |
| 1,000 m standing start | 24.82 s | 23.08 s |
| Top speed limited | 250 km/h | 274 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 | 1 840 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | 8-speed Steptronic |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 300 hp | B4 |
| Torque | 380 Nm | |
| Weight | 1 335 kg | manufacturer kerb weight |
| Drivetrain | Propulsion | |
| Gearbox | DUAL_CLUTCH |
Off the line, the 718 Boxster hits 100 km/h in 4.65 s versus 5.57 s for the 840i Convertible. At this point, the 718 Boxster leads by 0.93 s and sits roughly 9 m ahead.
At 200 metres, the 718 Boxster is doing 147 km/h against 136 km/h for the 840i Convertible. The gap is 0.68 s. The challenger starts to claw back ground.
At 400 metres standing start, the 718 Boxster crosses the line in 12.76 s versus 13.79 s. The 1.03 s gap represents roughly 48 m of track - a gap visible to the naked eye.
Past 400 metres, the 718 Boxster continues to build its lead. At 600 metres, it runs at 204 km/h versus 190 km/h. At 1,000 metres, the 718 Boxster finishes in 23.08 s versus 24.82 s, with a 1.74 s lead.
Both rivals are electronically governed, but not at the same level: the 840i Convertible is capped at 250 (i.e. 155 mph - industry threshold) km/h, the 718 Boxster at 274 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 (5.53 kg/hp vs 4.45 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 8.44 seconds. The 0.93 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, 718 Boxster wins (4,64 s vs 5,57 s).
840i Convertible G15 goes from 0 to 100 km/h in 5,57 seconds (calibrated simulation).
840i Convertible G15: 333 hp, ratio 5,53 kg/hp. 718 Boxster: 300 hp, ratio 4,45 kg/hp.
840i Convertible G15: 250 km/h. 718 Boxster: 274 km/h.