The tenure of David Moyes has been a curious affair to date.
Of the nine matches United have played under Sir Alex Ferguson's successor, it could be argued three were impressive, a further four somewhere between decent and average, the remaining two absolutely atrocious.
Last night's Champions League draw with Shakhtar Donetsk falls firmly in the first category, both for the battling qualities United displayed and, importantly, the result, which was the first time in five attempts any English team had avoided defeat in Europe's most prestigious club competition at the Donbass Arena.
Yet, when United head to Sunderland on Saturday evening, they will do so as a team for whom anything but victory would be a calamity following those pitiful Premier League performances against Manchester City and West Brom.
"We have to accept it has not been a great start," said Vidic.
"We have not been getting the performances we would have liked and we also have to be realistic enough to accept we have made some mistakes.
"This team has a lot of potential and we are working really well.
"Sometimes the results don't come. Sometimes the performances don't come. But I am really positive.
"The most important thing is to defend right. If we defend well, I think we have a really good chance to win trophies."
The mistakes to which Vidic refers are individual errors rather than fundamental blunders by a new management structure any group of players would take time to adjust to following Ferguson's departure.
Yet, when the Serbian performs in the manner he did last night, helping to keep Shakhtar away from United's goal for long periods, it does seem better times are on the horizon.
"You don't want to make mistakes two or three times," he said.
"That is the main thing. Once you have made one, don't do it again.
"That is the thing we have to learn.
"The last 10 days have been tough. We lost concentration at certain times, which we shouldn't have allowed.
"We are doing everything we can. We just have to be patient."