One of F1's failed tech tweaks

Motor Racing - Formula One World Championship - Formula One Testing - Day 2 - Barcelona, Spain

Mercedes released a video of its new power unit firing up on Monday, ahead of an expected shakedown of its new car at Silverstone this week. The team is the first to show off its exhaust configuration, with two additional pipes exiting from the wastegate in order to try and improve the noise level. Mercedes similarly tried to increase the volume with a trumpet exhaust during testing in 2014 (pictured). It didn't go so well...