The cabin is your usual Audi fare, which is to say refined and well appointed. All models get heated seats and climate controls stealthily incorporated in the air vents themselves, and our S line car has uprated sports seats.
Audi’s Virtual Cockpit is still the star here, making the cockpit feel that little bit more driver-focused. The entirely digital instrument binnacle is as customisable as ever, and it takes only a few journeys to adjust to the oversized dial and on-wheel buttons you control it with. It plays nicely with Android Auto and Apple CarPlay, too. The optional Technology pack is worth having, because it adds navigation, Audi Connect online services and wireless smartphone charging.
Boot space is smaller than in the TT Coupé, but the Roadster can still carry more than a BMW Z4 or Mercedes SLC. Folding the roof won’t affect the size of the load area, either, unlike some rivals.
The strengthening added to compensate for the loss of a fixed roof makes the Roadster feel stiff in the bends, which combines well with the impressive levels of grip. This is an agile sports car that can be thrown into corners at surprising speeds. It helps that the steering is precise, despite being so light. The progressive rack will appeal to daily drivers needing to slot the car into tight parking spaces, but anyone looking for the kind of engagement available in a rear-drive sports car won’t find much here.
On the other hand, the turbocharged four-pot is keen to rev and can still entertain through straight-line speed - with the caveat that you’ll be beaten off the line by a handful of today’s more potent hot hatchbacks. It’s responsive right the way through the rev range, with little in the way of lag. No, it doesn’t sound as good as a flat six, but it still makes its presence felt when you drop the hood.
That the new seven-speed gearbox is more reactive to your inputs than the old six-speed unit is enough to make manual mode more appealing, although it’s no slouch in automatic, either. The paddles could be a little larger for easier shifting, though.
With the roof down and windows up, the TT Roadster keeps the driver and passenger comfortably out of the wind. The hood, which takes 10sec to raise at vehicle speeds of up to 31mph, is made from sound-insulating fabric that does a good job of isolating the cabin while driving through town. Road noise only really becomes noticeable at motorway speeds.