Former Formula 1 driver and Sky Sports analyst Martin Brundle claimed that Mercedes had "hit the sweet spot" with the W17 after private testing in Barcelona last week.<br>With a new wave of regulations beginning this season with more of a focus on electrification, Mercedes has been touted as a favourite thanks to its record of success in the previous hybrid era. While team principal Toto Wolff ...<a class='more' href='https://www.motorsport.com/f1/news/martin-brundle-identifies-which-team-has-hit-the-sweet-spot-after-private-f1-testing/10794624/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-F1&utm_term=News&utm_content=www'>Keep reading</a>