| | Power |
| Porsche 911 Cabriolet (996) | |  | | 300 PS @ 6800 |
| BMW Z8 | |  | | 400 PS @ 6600 |
| | Torque |
| Porsche 911 Cabriolet (996) | |  | | 350 Nm @ 4600 |
| BMW Z8 | |  | | 500 Nm @ 3800 |
| | Weight/Power ratio : |
| Porsche 911 Cabriolet (996) | |  | | 5.04 Kg/PS |
| BMW Z8 | |  | | 4.3 Kg/PS |
|
| | Max Speed (in Km/h) |
| Porsche 911 Cabriolet (996) | |
    | | 265 to 280 Km/h |
| BMW Z8 | |
    | | 250 to 258 Km/h |
| | 400m (in s.) |
| Porsche 911 Cabriolet (996) | |
    | | 13.4 to 14.4 s. |
| BMW Z8 | |
    | | 13.1 to 13.8 s. |
| | Km (in s.) |
| Porsche 911 Cabriolet (996) | |
    | | 24.2 to 25.5 s. |
| BMW Z8 | |
    | | 23.5 to 24.4 s. |
| | 0 to 100 (in s.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 5.4 to 6.2 s. |
| BMW Z8 | |
    | | 5 to 5.5 s. |
| | 0 to 160 (in s.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 12.1 to 12.1 s. |
| BMW Z8 | |
    | | 11.5 to 11.5 s. |
| | 0 to 200 (in s.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 19.3 to 19.7 s. |
| BMW Z8 | |
    | | 16.5 to 18.3 s. |
| | 80 to 120 in 4 (in s.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 5.4 to 5.4 s. |
| BMW Z8 | |
    | | 4.5 to 4.5 s. |
| | 80 to 120 in 5 (in s.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 7.1 to 7.1 s. |
| BMW Z8 | |
    | | 6.1 to 6.4 s. |
| | 80 to 120 in 6 (in s.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 9.7 to 10 s. |
| BMW Z8 | |
    | | 7.2 to 7.8 s. |
| | 100 to 140 in 4 (in s.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 5.2 to 5.2 s. |
| BMW Z8 | |
    | | 4.2 to 4.2 s. |
| | 100 to 140 in 5 (in s.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 7 to 7.9 s. |
| BMW Z8 | |
    | | 5.2 to 5.2 s. |
| | 100 to 140 in 6 (in s.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 9.6 to 10.1 s. |
| BMW Z8 | |
    | | 7 to 7 s. |
| | 400m from 40 in 5 (in s.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 16.7 to 16.7 s. |
| BMW Z8 | |
    | | 15.2 to 15.2 s. |
| | 400m from 40 in 6 (in s.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 18.5 to 18.5 s. |
| BMW Z8 | |
    | | 17 to 17 s. |
| | 400m from 50 in 4 (in s.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 14 to 14.5 s. |
| BMW Z8 | |
    | | 13.8 to 13.8 s. |
| | Km from 40 in 5 (in s.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 29.7 to 29.7 s. |
| BMW Z8 | |
    | | 26.8 to 26.8 s. |
| | Km from 40 in 6 (in s.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 33.5 to 33.5 s. |
| BMW Z8 | |
    | | 30 to 30 s. |
| | Km from 50 in 4 (in s.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 25.5 to 26.1 s. |
| BMW Z8 | |
    | | 24.5 to 24.5 s. |
| | Km from 50 in 5 (in s.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 28.3 to 29.8 s. |
| BMW Z8 | |
    | | 24.1 to 24.1 s. |
| | 160 to 0 (in m.) Kph as default unit |
| Porsche 911 Cabriolet (996) | |
    | | 98 to 98 m. |
| BMW Z8 | |
    | | 96 to 96 m. |