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He has predicted Mercedes and Hamilton "will be competitive" and thinks the team will get on the top of their issues. Hamilton lies fifth in the drivers' standings after struggling across the first three races.
The seven-time champion picked up a podium in Bahrain but has since finished outside the top three twice.
Speaking to Express Sport, Warwick said: "It seems the concept of the Mercedes exaggerates the porpoising but the one thing you have to say with Toto Wolff, Ron Meadows and people like that, they will turn the corner. That car will be competitive, it will be winning and Lewis will be winning in it, as will George Russell. George Russell came through one of my BRDC young driver programmes and he is special."
Warwick has praised Hamilton's driving in Saudi Arabia which he claims could prove vital in his bid for the title. Hamilton was knocked out in the first part of qualifying