Formula 1 chiefs are hoping to conduct fresh tests to try to improve the noise of the cars after the British Grand PrixAlthough the test of a "megaphone" exhaust by Mercedes (pictured) following the Spanish GP was deemed a failure, with no clear improvement in volume, efforts have been ongoing...

Mercedes has started stared track-testing its experimental "megaphone" exhaust, designed to make Formula 1 engines louder.After criticism of the volume of the engines during the early stages of the season, the FIA and teams have been working on ways to increase the noise level of the latest generation of F1...