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

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.

Skoda announces 88mpg low emission Octavia

Skoda has launched an ultra-green version of its Octavia hatch, which emits just 85g/km CO2 and achieves 88.3mpg. The Skoda Octavia GreenLine is powered by a 1.6-litre TDI CR 110hp diesel engine and, thanks to its low emissions, qualifies for free road tax. Find out how much a used Skoda Octavia costs on AutoTrader On Bing: see pictures of the Skoda Octavia GreenLine Packed with eco-technologies such as low rolling resistance tyres inflated to a higher pressure than normal, the Octavia GreenLine attracts a BIK rate of 13%, making it highly-affordable for many company car users as well.

Tesla Roadster 2.5 breaks cover

Perhaps feeling a bit of chutzpah after a wildly successful stock offering this week, Tesla is demonstrating on Thursday that it still has an eye toward product, revealing the updated Tesla Roadster. And it's available for order now. Called the Roadster 2.5, the car features minor enhancements, including a new front fascia with different diffuser vents (the change is actually apparent) and new rear diffuser.