Additional stiffening measures have been introduced to the floorplan to counter the lack of a fixed roof structure. The fabric hood, developed in partnership with German open top specialist Edscha and boasting a heated glass rear screen, retracts back behind the seats electrically and stows in an exposed position. The upper section of the roof acts as an integral tonneau cover.
What’s it like?
The first thing you notice as you enter the Roadster is the acute angle of its windscreen and the way its header rail is positioned relatively close to your head. It is seriously disconcerting, even for someone of moderate height.
Worst of all, the thick frame of the windscreen, a drawback of additional stiffening measures to satisfy roll over safety regulations, obstructs visibility up the road, leaving you to crank your head around the header rail at times. Not a great start, then.
Mini predicts the majority of Roadster sales will be for the Cooper S, so it wasn’t surprising to find that all the examples of the new open top that it brought along to its launch in Portugal ran the familiar turbocharged 1.6-litre four-cylinder unit already found across its range.
The aluminium block engine, developed in partnership with Peugeot, is a gutsy performer, endowing the Mini Roadster with a solid levels of off-the-line and in-gear shove. However, it is a little gruff and undistinguished in sound.
Official figures put the Mini Roadster Cooper S’s 0-62mph time at 7.0sec – making it 0.3sec faster to the benchmark than the similarly powered Mini Cabriolet. It also gets from 50-75mph in fourth gear in 5.8sec and hits a top speed of 141mph. So, it’s not exactly lacking in performance.
The Roadster delivers all the driving fun and excellent dynamic properties of the Coupe – direct and well weighted steering, brisk turn-in qualities, excellent body control and plenty of front end bite when you attack corners with gusto.
Depress the Sport button at the base of the centre console and the steering becomes even more immediate in its actions, providing whip crack response in the first couple of degrees of lock. At the same time, the throttle mapping is advance to give the engine added response.
Mini marketing men once again wheeled out the ‘kart-like’ analogy to describe the handling of their latest model at its launch in Portugal. It’s a tenuous description, I know. But in this case it is not too far from the truth
It’s not all roses, though. Despite the inclusion of unequal length driveshafts and all sort of electronic driving aids, the Roadster’s otherwise excellent steering can’t mask the odd ping of old fashioned torque steer under heavy throttle loads.
On less than totally smooth roads you also become aware of scuttle shake. It rarely upsets progress, but there is a degree of flex and shimmy within the Roadster’s steel body structure over broken bitumen that suggests enthusiast drivers would be better served by the Coupe. That said, it feels a good deal stiffer than the Cabriolet – thanks it seems to a rather prominent brace across the floor of the boot.
The ride is also very firm – unnecessarily so it would seem. In a bid to give the Roadster a more focused feel than the Cabriolet, Mini’s chassis engineers have fitted it with firmer springs and dampers and larger diameter anti-roll bars. It does wonders for body control, which is quite exemplary. But an inability to soak up even small bumps means it can all to easily be thrown off line mid-corner.