Porsche has said it is almost halfway to its annual sales target for its new four-door Panamera luxury grand tourer, its fourth model line.

"Sales of the Panamera have really taken off. We have already secured over 9,000 orders," chief executive Michael Macht told Reuters.

The model mix showed greater demand for the higher-margin derivatives, which first went on sale three months ago.

The all-wheel drive Panamera 4S, which retails in Germany from EUR102,251 (US$149,900) including tax, accounted for 44% of orders, while another 36% were booked for the high-performance turbo version costing around another EUR30,000. The base S version accounted for the remaining 20%.

On Monday, the 10,000th Panamera left the assembly line at Porsche's Leipzig assembly plant. The sportscar maker plans to build an average 20,000 across the vehicle's life cycle.