The 31-year-old was disqualified from the roads for two years and ordered to perform 100 hours of unpaid work as part of a 12-month community order by a judge on Monday after he pleaded guilty to drink-driving.
Rooney, wearing a black baseball cap, arrived at the club's Finch Farm training complex in the passenger seat of a black Range Rover to prepare for the club's League Cup tie at home to Sunderland on Wednesday.
The former England captain issued a statement following his court appearance in which he apologised for his "unforgivable lack of judgement in driving while over the legal limit. It was completely wrong".