Webber has been mentoring Evans since 2009 - soon after he saw Evans became the youngest driver to make the podium in an Australian Formula Ford round - and expects his young protege to one day race in F1.
"I'm very proud of what Mitch has done," Webber said. "He's put together a very good campaign this year and GP3 is a very tough championship.
"There are a lot of good drivers in it, yet it was Mitch who had the most poles and the most wins of anyone. He's learning all the time and I look forward to him moving up to another category next year and showing everyone what an exceptional talent he is."
Evans, 18, won the series in a thrilling conclusion at Monza on Sunday morning, and with i, 200,000 towards a GP2 budget in 2013 - and a GP2 test at the end of this season.
