Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Driven: Jaguar XF

It is possibly harder to design a Jaguar than any other premium car brand. The essence of the firm's highly regarded design language is over 40 years old with the shadow of the 1961 E-type and 1968 XJ6 - and even the 1955 Mk1/1959 Mk2 - looming large. For decades the design group has taken cues from these old designs and reinterpreted them to appease the traditionalist Jaguar customer, but in doing so they have reinforced the 'old-man' image of Jaguar and pushed many customers to Audi, BMW and Mercedes-Benz.

No Porsche plan for model priced less than Boxster

Porsche has no plans to sell a car costing less than the Boxster, according to the automaker's head of sales and marketing. "To build a Porsche for 30,000 euros [$37,800 at current exchange rates] currently doesn't fit our brand," Bernhard Maier told the Automotive News Europe Congress in Monaco on Thursday. "The extraordinary purchase experience is not for free and the entry price is currently covered with the Boxster and in the future by the Macan." He said Porsche's plan to double sales won't compromise exclusivity.

Mercedes CLA: Official

The new Mercedes CLA – the ‘baby’ CLS based on the new A Class – has finally been revealed ahead of going on sale in the UK in May 2013. The very stylish four-door coupe styling based on the new Mercedes A Class has survived almost intact from the Style Concept, offering buyers looking for a smaller Mercedes a real alternative to the CLS without sacrificing anything other than a size. Despite being revealed on the eve of the Detroit Auto Show, the new Mercedes CLA will actually make its public debut at the Berlin Fashion Week this week as Mercedes seek to mark the CLA’s design out as a ‘Style Rebel’.