Porsche has pulled the covers off the most powerful 911 Turbo S ever – the new Exclusive Series.

Limited to a production run of 500 units, the new model gains 27bhp over the regular Turbo S, taking its power output up to 599bhp. Torque from the 3.8-litre flat-six engine remains unchanged at 750Nm.

Despite this boost in power, the Exclusive Series boasts the same performance figures as the regular Turbo S, dispatching the sprint from 0-60mph in 2.7 seconds before hitting a top speed of 205mph.

What really distinguishes this new limited-edition model from the standard Turbo S, however, is its ‘unique design, higher-quality materials and luxurious details’, says Porsche.

Exclusive Series cars will be finished by hand at Porsche’s in-house personalisation department – the Porsche Exclusive Manufacture.

As for the car’s exterior, its new Golden Yellow Metallic paint finish – only available on this model – is the most notable addition. This appears on the body, the design lines of the black 20-inch wheels, and on the badges that adorn the black brake calipers. While this colour is new for the Exclusive Series, Porsche is offering the car in a range of other exterior colours.

Carbon-fibre components have been fitted to the new Porsche, with the roof, bonnet and side skirts constructed from the material. However, these have not contributed to any weight savings.

In the cabin, the sports seats are upholstered in two layers of perforated leather, while seams and the Turbo S lettering on the headrests have also been finished in Golden Yellow. A plate on the passenger’s side displays the car’s limited-edition number.

Other standard equipment includes carbon ceramic brakes, Porsche Active Suspension Management and the Sport Chrono package.

The new Porsche 911 Turbo S Exclusive Series is priced from £186,916 in the UK – significantly more than the regular Turbo S’s £145,773 asking price.

While the new model costs a good deal of money, limited-run Porsches do have a history of dramatically appreciating in value.

Last year, Porsche released the 911 R with a price tag around the £137,000 mark. With only 991 produced, asking prices for used examples of the 911 R have reached £1 million.