Which Cars Have Auto Start-Stop? By Make, Model and Year / Mercedes-Benz / GLS-ClassMercedes-Benz GLS-Class Auto start-stop by year YearAuto start-stop2027Yes2026Yes2025Yes2024Yes2023Yes2022Yes2021Yes2020Yes2019Some configurations2018Yes2017Yes Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov).