Gas and diesel prices in Kitchener-Waterloo
In Kitchener-Waterloo diesel stood at 261.6¢/L and regular at 175.2¢/L on the October 19, 2026 southern Ontario average.
Regular gasoline in Kitchener-Waterloo, survey of Monday, October 19, 2026
175.2¢/L
Estimate for tomorrow, Tuesday, October 27, 2026: 171.9¢/L (−3.3¢).
| 55 L at this price | $96.36 |
| The same fill-up tomorrow (estimate) | $94.55 |
| Fuel for 15,000 km a year | $2,243 |
| 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. No official average of its own for Kitchener-Waterloo: the figure is the one published for the southern Ontario average.
Prepared by Radif Partners · Method · official sources read on October 26, 2026 · estimate for October 27, 2026, published method
Kitchener-Waterloo is not surveyed by name in the Government of Ontario's weekly fuel price report, so the official figure that applies to it is the southern Ontario average. At the survey of Monday, October 19, 2026, that average put diesel at 261.6¢/L and regular gasoline at 175.2¢/L, a gap of 86.4¢/L, taxes included. Regular is expected at 171.9¢/L on October 27, 2026 once the wholesale move since Monday is added; diesel has no daily public signal, so its estimate stays at 259.6¢/L until the provincial rack price catches up. Replayed over 140 weeks, the diesel method missed by 4.3¢/L on average and the gasoline one by 2.3¢/L. For a standard SUV driven 20,000 km, the class medians from Natural Resources Canada give $4,263 a year on gasoline and $5,400 on diesel at those prices. Taxes take 14.9% of a litre of diesel: Ontario's 9 cents plus 13% HST, with the federal excise of 4 cents suspended since April 20, 2026.
Kitchener-Waterloo in the Ontario survey
The provincial survey names a few markets and then gives broader averages. Kitchener-Waterloo is in the broad one for the south of the province, the southern Ontario average, and every number below comes from it, with its date and its source.
| Fuel | Latest official figure | Date and source | Estimate for October 27, 2026 | Past error of the method |
|---|---|---|---|---|
| Regular gasoline | 175.2¢/L | survey of Monday, October 19, 2026 · Government of Ontario | 171.9¢/L | ±2.3¢ on average over 140 weeks ("no change" guess: ±3.7¢) |
| Premium gasoline | 205.5¢/L | survey of Monday, October 19, 2026 · Government of Ontario | 202.2¢/L | ±2.4¢ on average over 140 weeks ("no change" guess: ±3.8¢) |
| Diesel | 261.6¢/L | survey of Monday, October 19, 2026 · Government of Ontario | 259.6¢/L | ±4.3¢ on average over 140 weeks ("no change" guess: ±4.3¢) |
The two fuels are estimated in different ways. Regular gasoline is carried from Monday to October 27, 2026 with the daily Montreal survey of the Régie de l'énergie du Québec, whose pre-tax change tracks the wholesale market that also supplies southern Ontario; in the replay its miss stayed under 5.4¢/L nine weeks out of ten. The daily Québec survey covers regular gasoline only, so for diesel the site waits for Ontario's rack series, which lags by about a week. That is why the diesel column often shows no change, and why its past error, 4.3¢/L on average, is wider than the gasoline one. The tomorrow page gives both for every city.
Diesel in Kitchener-Waterloo
Diesel is priced off a different refinery stream than gasoline, middle distillates rather than light products, and in this survey it is 86.4¢/L above regular. Tax is not the reason. Ontario's fuel tax is 9 cents a litre on both, and the federal excise, when it applies, is lower on diesel, 4 cents against 10. The breakdown of a litre of diesel at the survey price shows where the money goes.
| Component | Per litre |
|---|---|
| Ontario gasoline tax | 9.00¢/L |
| Federal excise tax | 0.00¢/L |
| Sales tax (HST, 13%) | 30.10¢/L |
| Refined product, transport and margins | 222.50¢/L |
| Pump price | 261.6¢/L |
Compared with a litre of regular, which carries 20.2¢/L of HST, a litre of diesel carries 30.1¢/L, simply because HST is a percentage of a higher price. The diesel page explains the separate market and how its estimate is built for every city.
A standard SUV on gasoline or on diesel
In the 2026 ratings, diesel versions are listed for 8 standard SUVs and 8 full-size pickups. Natural Resources Canada's 2026 ratings give a median combined consumption of 12.4 L/100 km for standard SUVs on gasoline and 10.4 L/100 km for the 8 diesel ones. Using the estimates for October 27, 2026 and 20,000 km a year, a round example distance:
| Vehicle | L/100 km | Price used | Fuel for 20,000 km |
|---|---|---|---|
| Standard SUV, gasoline | 12.4 | 171.9¢/L | $4,263 |
| Standard SUV, diesel | 10.4 | 259.6¢/L | $5,400 |
| Full-size pickup, gasoline | 12.9 | 171.9¢/L | $4,435 |
| Full-size pickup, diesel | 10.3 | 259.6¢/L | $5,348 |
The fuel saving of a diesel engine is real, but in Ontario right now it is not enough to offset the higher price at the pump. The break-even sits at about 205.0¢/L for diesel with regular at its current estimate; below that line the diesel SUV is cheaper per kilometre, above it the gasoline one is. That comparison covers fuel only; purchase price, maintenance and resale value are left out.
An SUV fuel budget in Kitchener-Waterloo
Fuel for a year, standard suv in Kitchener-Waterloo
$4,263
| Per month | $355 |
| Per 100 km | $21.32 |
| Consumption used | 12.4 L/100 km |
| Each extra 10¢ a litre | $248 |
When the diesel excise comes back
Finance Canada's draft legislation (proposed, not enacted) restores the federal excise on diesel at 2 cents on February 1, 2027 and 4 cents on April 1, 2027, against 5 and 10 cents for gasoline. With HST on top, the return weighs less on a diesel driver per litre.
Diesel excise return for an Ontario driver
Extra a month from April 1, 2027 (proposed, not enacted)
$5.42
| Until January 31, 2027 (proposed, not enacted) | $0.00 |
| February and March 2027, half rate (proposed, not enacted), a month | $2.71 |
| From April 2027 (proposed, not enacted), a year | $65 |
| Excise rate on April 1, 2027 (proposed, not enacted) | 4¢/L |
Recent surveys for Kitchener-Waterloo
| Survey | Regular | Diesel |
|---|---|---|
| October 19, 2026 | 175.2¢/L | 261.6¢/L |
| October 13, 2026 | 180.1¢/L | 256.6¢/L |
| October 5, 2026 | 185.3¢/L | 249.4¢/L |
| September 28, 2026 | 179.9¢/L | 249.4¢/L |
| September 21, 2026 | 180.8¢/L | 261.0¢/L |
| September 14, 2026 | 181.7¢/L | 254.7¢/L |
| September 8, 2026 | 184.3¢/L | 238.0¢/L |
| August 31, 2026 | 180.9¢/L | 226.6¢/L |
| August 24, 2026 | 174.7¢/L | 230.6¢/L |
| August 17, 2026 | 166.4¢/L | 222.9¢/L |
| August 10, 2026 | 160.8¢/L | 209.8¢/L |
| August 3, 2026 | 169.1¢/L | 218.1¢/L |
| July 27, 2026 | 178.3¢/L | 220.2¢/L |
The same southern average serves Hamilton; London, further west on Highway 401, has its own surveyed market.