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

Concept Car of the Week: Pininfarina CNR-PF (1978)

In the 1970s alarm bells were ringing in the energy sector as a series of energy crises and rising fuel prices spiralled. The car industry was forced to produce a new generation of more efficient cars and designers were putting new models through wind tunnels to optimize their aerodynamic performance to reduce aerodynamic drag. Some pushed the limits further than others and none more so than Pininfarina, which designed a car that slipped through the air twice as efficiently than any other.

Porsche Macan 2.0 litre 4-cylinder coming to the UK – but not Europe

The Porsche Macan 2.0 litre Turbo will be available in the UK Porsche quietly revealed their first car with a 4-cylinder engine in almost a generation at the Beijing Motor Show last month with the arrival of the Porsche Macan 2.0 litre turbo, produced to mop up sale in China. China’s tax system mitigates against thirstier, bigger-engined cars, so a 2.0 litre turbo attracts tax at less than half the rate of the 3.0 litre V6 in the Macan S, so it will be the big volume model for China. But the demand from China for the 2.0 litre Macan means Porsche won’t have the capacity to build it for other left hand drive markets, so Europe won’t be getting the little-engined Macan.

Renault at the London motor show 2008

By James Foxall and CAR reader reporter Carcare Motor Shows 22 July 2008 13:46 With the Paris motor show coming up in October 2008, it’s a surprise Renault had anything of interest to offer show-goers at this week's London exhibition. But Renault UK had other ideas... The French firm’s R26.R – a lightweight, stripped-out Megane, made its world debut.