Bottas locked up his first win of the year when he passed Leclerc with about a dozen laps left. It was the first win for Bottas since the Russian GP in September last year.
The orange-clad home crowd roared as the Red Bull star Max Verstappen finished an impressive .56 seconds quicker than Valtteri Bottas.
Styrian Grand Prix: Mercedes driver Valtteri Bottas handed three place grid drop for 'dangerous driving'
During the hearing, Mercedes driver Valtteri Bottas stated that in the past they have been losing time in the pit departure.
Valtteri Bottas posted the fastest time in a dramatic first practice for the Emilia-Romagna Grand Prix where the session was red-flagged twice on Friday.
After finishing even further behind his Mercedes teammate Lewis Hamilton last season, Valtteri Bottas took stock.
The Finn, who is 31 points adrift of defending five-time champion Hamilton in this year's title race, clocked a track record fastest lap
Valtteri Bottas allowed himself a roar of delight on Saturday when he claimed pole position for the Brazilian Grand Prix.
A headstrong Sebastian Vettel, rejecting the evidence of official data, accused the victorious Valtteri Bottas of jumping the start at the Austrian Grand Prix.
Valtteri Bottas converted pole position into his second win since joining Mercedes in the Austrian Grand Prix.