Over 0–100 km/h, 911 Turbo Cabriolet 991.2 wins (3,14 s vs 3,43 s).
Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.
Simulation
Calibration
Physics model calibrated on manufacturer splits. The limited top speed is not the real aerodynamic top speed of the vehicles.
| Roma | 911 Turbo Cabriolet 991.2 | |
|---|---|---|
| 0–100 km/h | 3,43 s | 3,14 s+0,29 s |
| 400 m standing start | 10,68 s−0,25 s | 10,93 s |
| 1,000 m standing start | 18,88 s−1,00 s | 19,88 s |
| Top speed (electronically limited) | 357 km/h+41 km/h | 316 km/h |
| Power-to-weight ratio | 2,37 kg/hpbetter ratio | 3,04 kg/hp |
Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.
Simulated performance at each stage. Winner in green.
| Palier | Roma | 911 Turbo Cabriolet 991.2 |
|---|---|---|
| 0–30 km/h | 1,03 s | 0,87 s |
| 0–50 km/h | 1,71 s | 1,46 s |
| 0–80 km/h | 2,75 s | 2,41 s |
| 0–100 km/h | 3,43 s | 3,14 s |
| 0–120 km/h | 4,14 s | 4,08 stight gap |
| 0–160 km/h | 5,92 s | 6,46 s |
| 0–200 km/h | 8,39 s | 9,84 s |
| 400 m standing start | 10,68 s | 10,93 s |
| 1,000 m standing start | 18,88 s | 19,88 s |
| Top speed | 357 km/h | 316 km/h |
Manufacturer technical specifications. The power-to-weight ratio is the key physical factor in a drag race.
| Characteristic | Value | Detail |
|---|---|---|
| Power | 620 hp | Pending |
| Torque | 760 Nm | |
| Weight | 1 472 kg | manufacturer kerb weight |
| Drivetrain | - | |
| Gearbox | 8-speed dual-clutch |
| Characteristic | Value | Detail |
|---|---|---|
| Power | 547 hp | B6 |
| Torque | 659 Nm | |
| Weight | 1 665 kg | manufacturer kerb weight |
| Drivetrain | Integrale (AWD) | |
| Gearbox | DUAL_CLUTCH |
Off the line, the 911 Turbo Cabriolet hits 100 km/h in 3.14 s versus 3.43 s for the Roma. At this point, the 911 Turbo Cabriolet leads by 0.29 s and sits roughly 6 m ahead.
At 200 metres, the 911 Turbo Cabriolet is doing 169 km/h against 182 km/h for the Roma. The gap is 0.04 s. The challenger starts to claw back ground.
At 400 metres standing start, the Roma crosses the line in 10.68 s versus 10.93 s. The 0.25 s gap represents roughly 15 m of track - two to three car lengths.
Past 400 metres, the Roma continues to build its lead. At 600 metres, it runs at 256 km/h versus 235 km/h. At 1,000 metres, the Roma finishes in 18.88 s versus 19.88 s, with a 1.00 s lead.
On paper, the Roma combines 620 hp, 760 Nm and 1,472 kg - a clear theoretical edge over the 911 Turbo Cabriolet. Yet the 911 Turbo Cabriolet launches quicker. At standstill, both motors deliver peak torque from 0 rpm: the decisive factor is no longer raw power, but available grip. If the 911 Turbo Cabriolet has a better traction coefficient (tyres, weight distribution, traction control calibration), it puts down more force despite inferior specs - exactly what the simulation reflects, calibrated on manufacturer 0-100 km/h times.
Electronically capped at 319 km/h, the 911 Turbo Cabriolet 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 (2.37 kg/hp vs 3.04 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 4.62 seconds. The 0.29 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, 911 Turbo Cabriolet 991.2 wins (3,14 s vs 3,43 s).
Roma goes from 0 to 100 km/h in 3,43 seconds (calibrated simulation).
Roma: 620 hp, ratio 2,37 kg/hp. 911 Turbo Cabriolet 991.2: 547 hp, ratio 3,04 kg/hp.
Roma: 357 km/h. 911 Turbo Cabriolet 991.2: 316 km/h.