Mercedes-Benz GLC300 4matic MPG by year

EPA combined, city, and highway gas mileage for every Mercedes-Benz GLC300 4matic model year.

Year	Combined	City	Highway
2026	26	23	31
2025	26	23	31
2024	26–27	24	31
2023	22–26	22	28
2022	23–24	21	28
2021	23–24	22	28
2020	24	21	28
2019	23–24	22	27
2018	24	22	28
2017	24	22	28
2016	24	21	28