The strike was the Leopards international’s second in consecutive matches for Stuttgart having opened his account with a consolation strike in the 3-1 loss at Schalke last week.
Akolo calmly converted Anastasios Donis’s cross shortly before half-time in torrential rain in southwest Germany.
A lot is still expected from the 22-year-old who signed for the Swabians at the back of an impressive 15 goals in 34 appearances for Sion.
The win was Stuttgart’s second of the campaign in four matches.
Hannes Wolf’s men are next in action on Tuesday with a trip to Borussia Monchengladbach.