Why McLaren's F1 title defence is collapsing already McLaren's Formula 1 title defence has started miserably, but it's facing bigger problems than simply the embarrassment of having to withdraw both its cars before the start of the Chinese Grand Prix.It appears that galling double did-not-start was down to two different failures on the same component of its customer Mercedes power unit."This is an area of the car which is not under McLaren's control... Read more: https://www.the-race.com/formula-1/why-mclarens-f1-title-defence-is-collapsing-already/