Bentley will take the wraps off its fastest ever car, the Continental GT Speed, at the Siam Paragon shopping complex this afternoon.

Powered by a highly tuned 625hp 6.0-litre twin-turbo W12, the GT Speed is 50hp more powerful than the regular GT and is capable of cracking the 0-100kph time in 4.2 seconds before reaching an exhilarating top speed of 330kph.

Transmission for the GT Speed is via an eight-speed automatic driving all four wheels for increased driving security.

Apart from the 21-inch wheels, there are several visual enhancements separating the GT Speed from its less powerful brethren.

As well, customers may choose from an array of bespoke exterior and interior details from the Mulliner Styling Specification package.

The GT Speed is being sold officially by its Thai importer, AAS Auto Service, at prices starting from 24 million depending on the level of personalisation.