Driven: Mazda RX-8

The two most obvious elements of its unusual make-up are its rotary engine and rear-hinged rear doors with integral B-pillars. What became clear during our week with the RX-8 was how these two aspects of its design form the basis of many other unique qualities... Sports coupe and GT coupe The rotary engine of the RX-8 has a very distinct power delivery that is a defining part of the car's character, but it is also a very small lump of metal compared to a similarly powerful conventional reciprocating piston engine, enabling more of the car's overall length to be devoted to cabin space.

BMW Vision EfficientDynamics

BMW has revealed a radical new concept set to be unveiled at the forthcoming Frankfurt motor show. Dubbed Vision EfficientDynamics, the vehicle is a showcase for the German automaker's new lightweight technologies and material adaptations. The prototype features a series of layered, flowing design elements which come together to create a lightweight vision for the future: a performance-oriented model created to not only conjure up emotion but to also epitomize BMW's 'EfficientDynamics' technologies.

2014 Volkswagen Polo now on sale – price from £11,100 to £19,715

The facelifted 2014 VW Polo (pictured) is now on sale The 2014 facelift for the VW Polo was revealed back in January and, although the cosmetic tweaks were the usual facelift fodder – tweaked bumpers and grill, new lights, new alloys and interior updates – the big changes came under the bonnet. New 3-cylinder engines arrive for the Polo with two new 1.0 litre petrols with 60PS or 75 PS, two 1.2 litre petrols with 90 or 110PS and and extra 10-PS for the 1.4 litre, which also gets cylinder deactivation. The diesel BlueMotion also gets dropped in favour of a petrol BlueMotion offering 68.9mpg from its 1.0 litre 3-pot and there’s a pair of 1.4 litre diesels with 75 or 90PS replacing the old 1.2 and 1.6 litre diesels.