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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.

BMW's new M engine needs a better voice

BMW's M division claims its new twin-turbocharged 3.0-liter inline six-cylinder engine is every bit as good -- if not better -- than the glorious, naturally aspirated 4.0-liter V8 powerplant it replaces in the new M3 sedan and M4 coupe. The figures are certainly impressive. They say it kicks out 424 hp and more than 25 percent extra torque, with what is described as significantly more than 369 lb-ft below 2,000 rpm.

Volvo V40 range gets new Drive-E engines

From May this year Volvo will update its V40 model, equipping the premium Swedish hatchback with its range of high-efficiency Drive-E engines and Volvo’s latest eight-speed automatic gearbox. This means the revised V40 line-up now offers an impressive performance to efficiency ratio, with 190hp on offer in the D4 turbodiesel variant, returning a claimed 74.3mpg combined with 99g/km CO2 when mated to the six-speed manual. On Bing: see pictures of the Volvo V40 Find out how much a used Volvo V40 costs on Auto Trader This makes it even more efficient than the current, less powerful 177hp, 185g/km D4 turbodiesel.