London is one of the more competitive fuel markets in southwestern Ontario. Two Costco gas bars — on Wellington Road South and Wonderland Road North — pin the floor for members at opposite ends of the city, and the long retail corridors of Wellington, Wonderland, Dundas Street East and Oxford Street keep a deep bench of majors and independents pricing against each other in between.
Prices in London also tend to move in sharp city-wide waves — everyone jumps together, then stations drift down at different speeds — so the gap between the cheapest and priciest pump on a given afternoon can be substantial. That drift window is exactly when a live ranking pays for itself. The list below covers every London station we track, cheapest first, refreshed hourly.