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

Tyre labelling not telling full story

THE NEW TYRE LABELLING scheme to tell drivers how environmentally efficient a tyre performs is not giving the full picture, according to Emissions Analytics. Tests show that at certain speeds, tyres with a lower efficiency rating can perform as well as those with a higher rating. This means drivers could be paying more for higher rated tyres when they would be as well off with a more affordable tyre.

Porsche makes £14k on every car it sells, Bentley makes £12.7k

Porsche made £14k on every car sold in 2013 If you need an illustration of how much more profitable high-end sports and luxury cars are than mainstream cars, VW Groups sales figures demonstrate it perfectly. At the extreme ends of the profit per car spectrum, Porsche made an enviable £13,931 for every car it sold in 2013 and VW made just £615 (although SEAT actually lost £330 on every car it sold) . In fact, although you might expect the higher-priced Bentley range to make more per car than a Porsche, Bentley only managed a creditable second place on VW Group’s profit per car table, turning in £12,700 profit for every car it turned out (11,000 of them in 2013).

New-look Interior Motives Winter 2013/14 issue out now

The winter edition of Car Design News' quarterly interior design publication, Interior Motives magazine, is out now sporting more pages and a brand-new layout designed to put the exclusive sketches, development images and high-quality photographs that accompany each story in their best possible light. As ever, the issue features in-depth design development articles on the most interesting and important concept and production vehicles launched in recent months. But the revamped magazine's larger format and more sophisticated layout explore their design with a level of detail and glamour never seen before in publishing.