Written by David Matrick, editor of CheapGasToronto.ca. Price figures come from the station reports published on this site; tax and policy facts link to their official sources. See our About page for editorial standards and our disclaimer for price accuracy notes.
Short answer: in our Toronto data for summer 2026, the day of the week barely mattered. The cheapest days (Sunday, Saturday and Friday) averaged under 1¢/L below normal, and Thursday was the most expensive at about 1.4¢/L above. The station you choose mattered about four times as much: the cheapest 10% of stations averaged 9.4¢/L below the median on a typical day.
What the data shows about weekdays
For each day from July 5 to September 22, 2026, we took the median regular price across Toronto stations. We then compared it with the average of the surrounding seven days, so that the summer's overall rise doesn't distort the weekday comparison:
| Day | vs surrounding week |
|---|---|
| Monday | −0.3¢/L |
| Tuesday | +0.2¢/L |
| Wednesday | +0.8¢/L |
| Thursday | +1.4¢/L |
| Friday | −0.6¢/L |
| Saturday | −0.7¢/L |
| Sunday | −0.8¢/L |
Mid-week (Wednesday and Thursday) ran slightly high, and the weekend slightly low. The whole range is about 2¢/L, which is about $1.10 on a 50-litre fill-up. That's less than the 9–10¢ changes the city-wide median made on some single days in September. The pattern comes from 11 weeks of data, so treat it as a tendency, not a rule. It can change or reverse when wholesale prices move.
Where you fill up matters more
On a typical day in the same period, the cheapest tenth of Toronto stations averaged 9.4¢/L below the median, and the single cheapest station about 16¢/L below. On 50 litres, that's about $4.70 to $8 — several times the weekday effect. The quickest saving is to compare stations already on your route:
- Cheapest stations in Toronto right now
- Stations near you (GPS or postal code)
- The price map, with pins coloured cheap, mid-range or expensive
Check the report time, not just the price
Every price on this site shows when it was reported. After prices rise, stations that nobody has reported since can show yesterday's lower price. That's why our cheapest lists rank reports from the last 12 hours ahead of older ones, and treat anything older than 36 hours as "last known". A low price with an old timestamp may not be there when you arrive.
When timing is worth it
- Before a known tax change. The federal excise tax returns at 5¢/L on February 1, 2027 (about +5.6¢/L with HST) and at the full 10¢/L on April 1, 2027. Filling up the day before saves a predictable amount. See the tax guide.
- When a rise is already under way. The fill-up-or-wait forecast and the tomorrow estimate combine recent station prices with crude and wholesale moves for the next few days. They're estimates, not announcements.
- With a price alert. Free alerts email you when the cheapest reported price reaches a target you set.
Is the saving worth the detour?
A 5¢/L difference on 50 litres is $2.50. If the detour burns one litre, subtract about $1.80. Cheaper stations on your usual route beat a cross-town trip for a few cents.
A practical routine
- Fill up when you're down to about a quarter tank, so you're not forced to buy at the nearest station.
- Compare recent reports for stations on your route.
- If a tax step or a forecast rise is coming in the next day or two, fill up sooner.
- Confirm the pump price before you start.
How we measured
We used each Toronto station's lowest regular-gasoline report per day (community reports collected by this site), counting only days with at least 100 stations reporting, from July 5 to September 22, 2026. Weekday differences compare each day's median with the average of the three days before and after it. The station gap compares each day's median with the 10th-percentile station price.
Related: Ontario gas price trends in 2026 · 5 Smart Ways to Save on Gas in Toronto