Over 0–100 km/h, Boxster Spyder 981 and Z4 M40i G29 are neck and neck (4,54 s vs 4,58 s, no significant gap).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
| Measure | Boxster Spyder 981 | Z4 M40i G29 | Gap |
|---|---|---|---|
| 0–100 km/h | 4.58 s | 4.54 s | 0.04 s · Z4 M40i G29 |
| 400 m standing start | 12.41 s | 12.72 s | 0.31 s · Boxster Spyder 981 |
| 1,000 m standing start | 22.16 s | 23.00 s | 0.84 s · Boxster Spyder 981 |
| Top speed (electronically limited) | 288 km/h | 250 km/h | 38 km/h · Boxster Spyder 981 |
| Power-to-weight ratio | 3.51 kg/hp | 4.57 kg/hp | better ratio · Boxster Spyder 981 |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
| Stage | Boxster Spyder 981 | Z4 M40i G29 |
|---|---|---|
| 0–30 km/h | 1.26 s · tight gap | 1.26 s |
| 0–50 km/h | 2.11 s | 2.11 s |
| 0–80 km/h | 3.65 s | 3.41 s |
| 0–100 km/h | 4.58 s | 4.54 s · tight gap |
| 0–120 km/h | 5.62 s | 5.97 s |
| 0–160 km/h | 8.74 s | 9.81 s |
| 0–200 km/h | 13.32 s | 15.62 s |
| 400 m standing start | 12.41 s | 12.72 s |
| 1,000 m standing start | 22.16 s | 23.00 s |
| Top speed limited | 288 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 | 375 hp | B6 |
| Torque | 420 Nm | |
| Weight | 1 315 kg | manufacturer kerb weight |
| Drivetrain | Propulsion | |
| Gearbox | MANUAL |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 340 hp | 6 cyl |
| Torque | 500 Nm | |
| Weight | 1 555 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | Eight-speed Steptronic transmission |
Off the line, the Z4 M40i hits 100 km/h in 4.55 s versus 4.59 s for the Boxster Spyder. The 0.04 s gap is negligible: both vehicles are neck and neck.
At 200 metres, the Boxster Spyder is doing 154 km/h against 147 km/h for the Z4 M40i. The gap is 0.08 s. The gap remains stable from the start.
At 400 metres standing start, the Boxster Spyder crosses the line in 12.41 s versus 12.71 s. The 0.31 s gap represents roughly 15 m of track - two to three car lengths.
Past 400 metres, the Boxster Spyder continues to build its lead. At 600 metres, it runs at 216 km/h versus 204 km/h. At 1,000 metres, the Boxster Spyder finishes in 22.15 s versus 23.00 s, with a 0.85 s lead.
Electronically capped at 250 (i.e. 155 mph - industry threshold) km/h, the Z4 M40i 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 (3.51 kg/hp vs 4.57 kg/hp) and transmission (Manual vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 6.79 seconds. The 0.04 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, Boxster Spyder 981 and Z4 M40i G29 are neck and neck (4,54 s vs 4,58 s, no significant gap).
Boxster Spyder 981 goes from 0 to 100 km/h in 4,58 seconds (calibrated simulation).
Boxster Spyder 981: 375 hp, ratio 3,51 kg/hp. Z4 M40i G29: 340 hp, ratio 4,57 kg/hp.
Boxster Spyder 981: 288 km/h. Z4 M40i G29: 250 km/h.