Over 0–100 km/h, Z4 M40i G29 wins (4,54 s vs 4,99 s).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
| Measure | Z4 M40i G29 | Boxster Spyder | Gap |
|---|---|---|---|
| 0–100 km/h | 4.54 s | 4.99 s | 0.44 s · Z4 M40i G29 |
| 400 m standing start | 12.72 s | 13.04 s | 0.32 s · Z4 M40i G29 |
| 1,000 m standing start | 23.00 s | 23.27 s | 0.27 s · Z4 M40i G29 |
| Top speed (electronically limited) | 250 km/h | 266 km/h | 16 km/h · Boxster Spyder |
| Power-to-weight ratio | 4.57 kg/hp | 3.94 kg/hp | better ratio · Boxster Spyder |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
| Stage | Z4 M40i G29 | Boxster Spyder |
|---|---|---|
| 0–30 km/h | 1.26 s | 1.44 s |
| 0–50 km/h | 2.11 s | 2.40 s |
| 0–80 km/h | 3.41 s | 4.03 s |
| 0–100 km/h | 4.54 s | 4.99 s |
| 0–120 km/h | 5.97 s | 6.48 s |
| 0–160 km/h | 9.81 s | 10.03 s |
| 0–200 km/h | 15.62 s | 15.57 s · tight gap |
| 400 m standing start | 12.72 s | 13.04 s |
| 1,000 m standing start | 23.00 s | 23.27 s |
| Top speed limited | 250 km/h | 266 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 | 500 Nm | |
| Weight | 1 555 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | Eight-speed Steptronic transmission |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 324 hp | Engine block and cylinder heads formed in aluminum |
| Torque | 370 Nm | |
| Weight | 1 275 kg | manufacturer kerb weight |
| Drivetrain | Propulsion | |
| Gearbox | 6 speed standard |
Off the line, the Z4 M40i hits 100 km/h in 4.55 s versus 4.99 s for the Boxster Spyder. At this point, the Z4 M40i leads by 0.44 s and sits roughly 9 m ahead.
At 200 metres, the Z4 M40i is doing 147 km/h against 146 km/h for the Boxster Spyder. The gap is 0.37 s. The gap remains stable from the start.
At 400 metres standing start, the Z4 M40i crosses the line in 12.71 s versus 13.04 s. The 0.32 s gap represents roughly 16 m of track - two to three car lengths.
Past 400 metres, the gap narrows. The Z4 M40i maxes out at 250 (i.e. 155 mph - industry threshold) km/h while the Boxster Spyder keeps accelerating towards 266 km/h. At 600 metres, the gap has dropped to 0.29 s.
At 1,000 metres, the Z4 M40i finishes in 23.00 s versus 23.27 s, with just 0.27 s to spare. The Boxster Spyder fails to fully close the launch gap.
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 (4.57 kg/hp vs 3.94 kg/hp) and transmission (Automatic vs Unknown).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.16 seconds. The 0.44 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, Z4 M40i G29 wins (4,54 s vs 4,99 s).
Z4 M40i G29 goes from 0 to 100 km/h in 4,54 seconds (calibrated simulation).
Z4 M40i G29: 340 hp, ratio 4,57 kg/hp. Boxster Spyder: 324 hp, ratio 3,94 kg/hp.
Z4 M40i G29: 250 km/h. Boxster Spyder: 266 km/h.