2015 R4S GP3 League Season
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The 2015 GP3 League season of the R4S GP3 League is the third season on rFactor and extended the cooperation with Deutsche Liga Meisterschaft e.V. There were ten races scheduled.

The 2015 season was the 3rd of the Race4Speed Leagues in rFactor and the second season overall. 2014 hampion Bastian Paisler didn't defend his title, whereas newcomers Campos won the drivers title with Miguel Veneno. It was also the last season of GP3 at Race4Speed.