Last year Aston Martin unveiled the unapologetically lairy Vantage GT12, a car about as close to a road-going Vantage GT3 racer as it’s possible to get. But it seems that wasn’t quite extreme enough for one customer, who commissioned a one-off Aston Martin Vantage GT12 Roadster.

Changes over the standard car include serious-looking front splitter, side skirts and rear diffuser, and bespoke paint and trim. Underneath is a unique chassis set-up intended to produce the same “exceptional handling characteristics” as the GT12 coupe.

Under the bonnet is a 592bhp version of Aston’s venerable naturally-aspirated 6.0-litre V12 – up from 565bhp in the standard car – complete with magnesium inlet manifold, magnesium torque tube and a full titanium exhaust. Safe to assume it’s loud. Like, very.

More significant than the car itself, though, is that it is the first whole car designed and developed by Aston’s bespoke division Q by Aston Martin. Previously, Q only dealt with bespoke colour and trim commissions, but has now been brought under the same umbrella as Aston Martin Advanced Operations, which developed low-volume specials like the One-77, Vulcan and the GT12 coupe.

Chief Special Operations Officer, David King, said: “Aston Martin has a growing reputation of building ambitious commissions for customers. We have also become world leaders in ultra-low volume projects, while the Vantage GT12 and Vantage GT8 show how far we can take our series production models.

“The GT12 Roadster is the first project to combine all of those skill sets in one magnificent car. In just nine months we took a customer’s dream and realised it, with a fully-formed, exactingly engineered and fully road-legal one-off. That is the essence of the Q by Aston Martin service.”

Aston hasn’t been so indiscreet as to reveal how much the GT12 Roadster cost its owner, but bear in mind the coupe commanded a cool £250,000.

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By Only Motors