The Volkswagen Jetta fuel tank capacity has varied over the years. 2022, 2021, 2020, and 2019 VW Jetta sedans can all hold 13.2-gallons of gasoline. With the 2022 VW Jetta delivering up to an EPA-estimated 31/41 MPG (city/highway)1, this large gas tank lets you go long distances without the need for frequent fuel stops. The 2018 and 2017 VW Jetta can hold 14.5-gallons of gasoline but deliver slightly lower MPGs.