Which Cars Have Auto Start-Stop? By Make, Model and Year / Audi / A6Audi A6 Auto start-stop by year YearAuto start-stop2026Yes2025Yes2024Yes2023Yes2022Yes2021Yes2020Yes2019Yes2018Yes2017Yes2016Some configurations2015Some configurations2014Some configurations2013Some configurations Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov).