Windsor, with its neighbours Tecumseh and LaSalle, is one of Ontario’s most price-aware fuel markets — living across the river from Detroit’s cheaper American gas will do that. Competition runs hottest along Tecumseh Road, Walker Road and Huron Church Road, and the Costco gas bar gives members a dependable floor that nearby stations price against.
The cross-border question comes up constantly: US pumps usually post a lower per-litre equivalent thanks to lower fuel taxes, but once you add bridge or tunnel tolls, the exchange rate and the trip itself, a Michigan fill only makes sense if you are already crossing. For everyone else, the ranked list below — every Windsor, Tecumseh and LaSalle station we track, refreshed hourly — is the faster way to save.