Playmaker Diego marked his return to the German top flight, after a mediocre season with Juventus in Italy, with two goals late in the first half at the Volkswagen-Arena to end Wolfsburg's run of four consecutive defeats.
Diego, who was suspended for a match earlier this month for disobeying teams orders and taking a penalty, which he missed, once again prompted the ire of the home fans when he missed a penalty in the 24th minute.
The Brazlian, however, made amends by opening the scoring in the 37th minute and then gave the hosts a comfortable interval with his second from a superb free-kick in first half injury time.
Moenchengladbach pulled a consolation goal back through defender Filip Daems in the 74th minute, however their 15th defeat in 24 games left them rooted firmly at the bottom of the table.
Wolfsburg's sixth win of the season, and first at home since October, moved them up to 13th, 29 points behind runaway league leaders Borussia Dortmund.
Diego brace fires up Wolfsburg
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