How big is the gas tank on a 2016 VW Golf?By oliviajones / volkswagen Table of Contents Toggle How big is the gas tank on a 2016 VW Golf?How big is the gas tank on a 2019 VW Golf?What is the fuel capacity of a 2017 VW Golf? How big is the gas tank on a 2016 VW Golf? EPA estimated fuel economy with the DSG is 25 mpg combined (22 city/31 highway); the manual is also rated at 25 mpg combined (21 city/32 highway). How big is the gas tank on a 2019 VW Golf? What is the fuel capacity of a 2017 VW Golf?