Mata scored two goals as United earned their 10th away win of the season with the 4-0 victory over Newcastle United on Saturday.
He told MUTV: "When we look at that record, we think we should have done better at home and at Old Trafford.
"But I think it is something to be proud of, to be the best team away from home in the league. Let's try to win at home, win as many games as we can until the end of the season and go higher in the table."
Mata joined United in the January transfer window from Chelsea.