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

Button issues Triathlon challenge

Formula 1 star Jenson Button is challenging his McLaren team-mates to down tools and race him - in the annual triathlon he organises. The 2009 world champion driver is signing up his mechanics to take part in the challenge being staged in July for the third year. Button is a keen athlete who has taken part in a number of triathlons over the years.

Mercedes unveils powerful new AMG 4.0-litre twin-turbo V8

By John Mahoney Motor Industry 25 July 2014 17:09 Mercedes AMG has released details of an all-new 503bhp 4.0-litre twin-turbo V8 that will help fill the void when the production of its normally aspirated 6.2-litre V8 ends. Lightweight, compact and more efficient than the big 6.2-litre it replaces, the new smaller capacity turbocharged V8 produces 479lb ft from just 1750rpm. The first car to receive the new engine will be the Porsche 911-rivalling Mercedes AMG GT, but other smaller cars like the C63 AMG are also set to benefit from its compact design.

IIHS names safest cars for 2013

The Insurance Institute for Highway Safety has named the safest cars for 2013, including 13 midsize sedans that qualify for a new “top safety pick+” designation. The designation is given to vehicles that earn “good” ratings for occupant protection in at least four of five tests, with no less than “acceptable” in the fifth test. A new test -- the small overlap test -- was added to assess how the vehicles perform during a front-corner collision with another vehicle or object, such as a utility pole.