I can't remember the last time they utterly ******* up in the pits for instance.
Not with Vettel at least.
It's hard to say with Alonso, because the last few years he's had 'a dog of a car' but Hamilton has gone through a season of complete meltdown where he ruined his own chances and then last year where he had arguably the best package and the team let him down.
Although Vettel has had a few blips (the crash with Webber, folding under pressure to Button in Canada, the alternator issues) the team, the car and himself as a driver have all been incredibly consistent.