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Alfa Romeo 4C Spider revealed: Geneva Motor Show

The Alfa Romeo 4C Spider (pictured) revealed in Geneva The Alfa Romeo 4C is the epitome of a modern ‘supercar’, with ultra light weight (for a production car) allowing the 4C to produce very good performance from its modest 17500cc engine. So producing an Spider convertible immediately raises the weight issue in a more dramatic way when the car’s abilities are so dependent on it low weight, but it seems the Alfa Romeo 4C Spider – previewed as a production car with a concept at Geneva today – has managed to keep the wight penalties of the convertible 4C down to a minimum. Thanks to a canvas roof and carbon fibre rollover bars, the weight penalty for the Spider is only about 60kg (around a 7 per cent gain) which shouldn’t hurt performance too much.

Porsche Cayenne Diesel TECHART launched

The TECHART Porsche Cayenne Diesel offers some useful power upgrades But some modifiers do get it right – particularly in the performance stakes. Some of Gemballas’s Porsche Cayenne Tornado cars offer spectacular performance, if not always the most tasteful of body mods. But time are a changing, and modifiers are starting to look at the Porsche Cayenne Diesel as a good way forward.

Porsche confirms four-cylinder Macan

Porsche has said that its new Macan SUV will come with four-cylinder engines – making it the first four-pot Porsche since 1995. Porsche engineer Antoon Janssen told MSN Cars: “There will be four-cylinder engines added to the range shortly. You will find out more details soon, but I can’t tell you any more.” On Bing: see pictures of the Porsche Macan New 2014 Porsche Macan revealed in LA The engines are likely to be both petrol and diesel, and from within the Volkswagen group.