The Aston Martin DB9 GT, like the international man of mystery who gave the English car company its fame, is a smooth operator.

Silky and sleek, neither shaken nor stirred, James Bond’s favorite car has the power to make any driver want to slip on a tuxedo and strap on a Walther PPK.

Outfitted with a massive 6.0-liter V-12 engine, the DB9 GT produces 540 horsepower and 457 pound-feet of torque. Capable of a top speed of 183 miles per hour, Aston Martin says, it goes from zero to 60 in 4.4 seconds.

But even in sport mode, under heavy acceleration, the DB9 is mellow. That’s partly the work of the car’s Touchtronic II six-speed paddle shift transmission, a gentle variation on the sharper PDK system used by Porsche – maybe the best semi-automatic shift on the market.

The Touchtronic slurs from gear to gear, imbuing a sensation of refinement and restraint, rather than the precise snap of the PDK.

On the road, the DB9 GT feels solid and sturdy, and even a little stodgy – not entirely surprising, given the 4,000-pound weight of the Volante convertible version. In the twisties, even with the suspension tuned to sport mode, the handling is a bit sloppy.

But just listen to it. Upon start-up, and with sport mode engaged, the DB9 GT’s exhaust bypass valve opens, uncorking a delicious, throaty muffler note that’s one of the automotive world’s most beautiful sounds.

And look at it. Top up or top down, the Aston Martin’s long hood, rounded shoulders and sinuous belt line are a portrait in refined power.

The interior is British, drawing-room elegance. The wrap-around leather, from steering wheel cover to dash to door panels to form-fitted seats, gives the car a rich, masculine feel, offset by the discreet use of wood paneling and chrome detail.

The amenities are minimal. There are seat heaters, but no seat ventilation. The sun visor is the smallest I’ve seen on any car except the Aston Martin Vantage S, and the cup holders won’t cradle anything larger than an espresso – reminders, perhaps, that English and European drivers aren’t constantly lapping up the latte when they drive.

To that point, some DB models actually come with a “boot-mounted umbrella.” The one we borrowed didn’t come with the umbrella, but it did have Velcro straps in the trunk to hold the bumbershoot in place.

And though the DB9 GT doesn’t come with any 007-style features – the ejector seat, on-board machine guns or rocket launchers, or cloaking devices on Bond’s earlier Aston Martins – it does have a pair of automatically deploying roll bars, in case the driver gets too frisky and flips over.

The DB9 GT, which plays on its Bond connection with ad lines such as “Licensed to thrill,” was first introduced in 2004. It has been the most successful Aston Martin in the company’s history.

Despite that, the 2016 model will be its last. The next in the DB line – which has been the badge on exquisite sports cars since the 1950s – will be the DB11. It is likely to be a 2017 vehicle, and to have a great resemblance to the DB10, the custom-made car that will not be sold but can be seen in the new Bond movie “Spectre.”

This DB9 GT has a starting MSRP of $217,000. The Volante convertible I drove, with an $8,000 Bang and Olafson sound system, goes for $228,800.

That puts it in the ultra-premium range, and up against some extremely impressive sports cars. A Ferrari 458 or McLaren 650 S doesn’t cost much more than that.

A Porsche 911 GT3 costs less. You could buy three Jaguar F-Types for the same money, or two Mercedes Benz AMG GTs.