During the Honda years, everyone at McLaren seemed to believe that all of its problems were down to the engine and that once it had changed to Renault things would be different.

But it was clear from 2015-17 that there were also problems on the chassis side, and now the engine change has been made it's become very obvious some shortcomings remain.

Some asked why I was so critical of McLaren during the Honda period, and those clear shortcomings were the reason - after all, it's a team I worked for during my career so I want to see it perform as it should.