Gas prices in Windsor, across from Detroit
Windsor's regular gasoline averaged 175.9¢/L at the October 19, 2026 Ontario survey; the estimate for October 27, 2026 is 172.6¢/L.
Regular gasoline in Windsor, survey of Monday, October 19, 2026
175.9¢/L
Estimate for tomorrow, Tuesday, October 27, 2026: 172.6¢/L (−3.3¢).
| 55 L at this price | $96.75 |
| The same fill-up tomorrow (estimate) | $94.93 |
| Fuel for 15,000 km a year | $2,252 |
| Taxes in one litre | 29.2¢/L (16.6%) |
| Past error of the estimate | ±2.3¢ on average over 140 weeks ("no change" guess: ±3.7¢) |
Source: Government of Ontario, survey of Monday, October 19, 2026.
Prepared by Radif Partners · Method · official sources read on October 26, 2026 · estimate for October 27, 2026, published method
Windsor has its own line in the Government of Ontario's Monday survey of self-serve stations, so its gas price is measured directly rather than borrowed from a regional average. The survey of Monday, October 19, 2026 found regular gasoline at 175.9¢/L and diesel at 260.0¢/L, taxes included. To bridge the days between surveys, the site adds the pre-tax change in the Régie de l'énergie du Québec's daily Montreal price, with HST, which puts regular at 172.6¢/L for October 27, 2026. Over 140 replayed weeks that estimate erred by 2.3¢/L on average, compared with 3.7¢/L for assuming no change. Of the pump price, 16.6% is tax: 9 cents of Ontario gasoline tax and 20.2¢/L of 13% HST, the federal excise having been suspended since April 20, 2026. Prices on the Detroit side are quoted in US dollars per US gallon and are not covered by any Canadian survey, so this page does not publish them.
Windsor's own line in the survey
Windsor is among the Ontario cities that the province surveys under their own name. The numbers below therefore describe Windsor's stations, not a wider average, and each one carries the date of the Monday survey it comes from.
| Fuel | Latest official figure | Date and source | Estimate for October 27, 2026 | Past error of the method |
|---|---|---|---|---|
| Regular gasoline | 175.9¢/L | survey of Monday, October 19, 2026 · Government of Ontario | 172.6¢/L | ±2.3¢ on average over 140 weeks ("no change" guess: ±3.7¢) |
| Premium gasoline | 205.8¢/L | survey of Monday, October 19, 2026 · Government of Ontario | 202.5¢/L | ±2.5¢ on average over 140 weeks ("no change" guess: ±3.7¢) |
| Diesel | 260.0¢/L | survey of Monday, October 19, 2026 · Government of Ontario | 258.0¢/L | ±4.9¢ on average over 140 weeks ("no change" guess: ±4.9¢) |
Over the last 13 surveys, Windsor's regular price ran from 161.3¢/L on August 10, 2026 to 186.3¢/L on October 5, 2026. That range is a reminder that a single Monday figure is a snapshot, and that a one-off comparison with another city can say more about the week than about the city.
The Detroit question
Windsor faces Detroit across the Detroit River, and filling up on the other side is a natural question. This site has no US price data and does not publish any, so it cannot settle it with a number. What it can do is list what a fair comparison needs. US pumps show US dollars per US gallon, so the price has to be converted twice, for the currency at the day's rate and for the volume, a US gallon being several litres. The crossing itself has a cost: the bridge or tunnel toll, and time at the border both ways. A gap of a few cents a litre on one tank can vanish once those are counted.
On the Canadian side, the tax content of a Windsor litre is known precisely. Ontario's gasoline tax is 9 cents a litre and HST at 13% adds 20.2¢/L at the survey price; the 10-cent federal excise is suspended until at least January 31, 2027 (proposed, not enacted).
| Component | Per litre |
|---|---|
| Ontario gasoline tax | 9.00¢/L |
| Federal excise tax | 0.00¢/L |
| Sales tax (HST, 13%) | 20.24¢/L |
| Refined product, transport and margins | 146.66¢/L |
| Pump price | 175.9¢/L |
Windsor against London
For drivers heading east on Highway 401, London is the next surveyed market. On the latest survey it was at 177.0¢/L, so +1.1¢ relative to Windsor.
Windsor against London
Difference per litre, London, Ontario minus Windsor
+1.1¢
| Windsor | 175.9¢/L (survey of Monday, October 19, 2026) |
| London, Ontario | 177.0¢/L (survey of Monday, October 19, 2026) |
| On a 55 L fill-up | $0.60 |
| Over 15,000 km a year | $14 |
Diesel and the estimate
Diesel in Windsor was 84.1¢/L above regular at the survey. Its estimate is the weakest on the page because no daily price signal exists for diesel in the sources the site uses; it changes only when Ontario's rack price is more recent than the survey. The regular estimate does better, with nine misses out of ten below 5.0¢/L in the replay. Details for diesel are on the diesel page and the daily figures on the tomorrow page.
Windsor surveys over the last weeks
| Survey | Regular | Diesel |
|---|---|---|
| October 19, 2026 | 175.9¢/L | 260.0¢/L |
| October 13, 2026 | 180.9¢/L | 254.8¢/L |
| October 5, 2026 | 186.3¢/L | 247.2¢/L |
| September 28, 2026 | 180.2¢/L | 246.8¢/L |
| September 21, 2026 | 181.0¢/L | 257.4¢/L |
| September 14, 2026 | 182.2¢/L | 252.2¢/L |
| September 8, 2026 | 184.8¢/L | 234.8¢/L |
| August 31, 2026 | 181.2¢/L | 223.7¢/L |
| August 24, 2026 | 174.8¢/L | 226.1¢/L |
| August 17, 2026 | 166.9¢/L | 218.9¢/L |
| August 10, 2026 | 161.3¢/L | 204.6¢/L |
| August 3, 2026 | 168.7¢/L | 215.0¢/L |
| July 27, 2026 | 179.2¢/L | 218.2¢/L |
The weekly series comes from the Government of Ontario's open data, which allows it to be shown in full. Tax rates in other provinces are compared on the tax page.