Gasoline vs Electric: Monthly Fuel Costs Compared With Real Numbers
For a US driver covering 1,000 miles a month, a gasoline car costs about $117 a month in fuel at 30 mpg and $3.50 a gallon. An EV charged at home costs about $49 a month at 3.5 miles per kWh and $0.17 per kWh. That is $68 a month, or $817 a year, apart. The rest of this post shows the math, how charging method changes it, how diesel compares, and how long fuel savings take to cover a price gap between two cars. A Canadian example, in litres and dollars, follows further below.
One note on current prices: the $3.50 figure is an example used by the calculator linked below. The US Energy Information Administration's national average for regular gasoline was $4.284 a gallon in the week of October 19, 2026. At that price, the same 1,000 miles cost $143 in gasoline, so the $117 example is conservative. Prices vary a lot by state: that same week, California averaged $6.03 a gallon and Texas $3.70.
The monthly math, step by step
The gasoline figure uses three inputs. Monthly distance is 1,000 miles. Fuel economy is 30 mpg. The gasoline price is $3.50 a gallon. Divide 1,000 by 30 to get 33.3 gallons, then multiply by $3.50 to get $117 a month.
The EV figure uses the same distance. Efficiency is 3.5 miles per kWh. The charging rate is $0.17 per kWh for home charging. Divide 1,000 by 3.5 to get 285.7 kWh, then multiply by $0.17 to get $49 a month.
Subtracting gives $68 a month, and multiplying by 12 gives $817 a year. Fuel prices move every week, so treat these as a snapshot, not a permanent price. Check current prices before making any decision based on them.
Charging method changes the bill more than people expect
An EV's charging cost depends heavily on how you charge. Using the same 1,000 miles and 3.5 miles per kWh:
Home charging at $0.17/kWh costs $49 a month, saving $68 against the gasoline car.
Public Level 2 charging at $0.30/kWh costs $86 a month, saving $31.
DC fast charging at $0.45/kWh costs $129 a month, which is $12 more than the gasoline car's $117.
Home charging saves the most, and public Level 2 still saves. But DC-fast-only charging can erase the saving entirely at these prices. Drivers who mix methods land between these cases.
What about diesel?
Diesel in the US currently costs more than gasoline, not less. The EIA's national average on-highway diesel price was $6.179 a gallon in the week ended October 12, 2026. At an example 35 mpg, 1,000 miles use 28.6 gallons and cost $177 a month. Against the EV's $49 on home charging, that is $128 a month, or $1,532 a year. Diesel's premium over regular gasoline was about $1.85 a gallon that week. Better fuel economy shrinks the gap, and higher mileage widens it again, so the right comparison uses your own car's real efficiency.
What about Canada?
For Canadian readers, the same comparison works in litres and Canadian dollars. A driver covering 1,600 kilometres a month (about 994 miles, close to the 1,000-mile US example) in a gasoline car at 7.5 litres per 100 kilometres uses 120 litres. At the national average of 185.4 cents per litre on October 14, 2026, that is $222 a month. An EV covering the same distance at 16 kWh per 100 kilometres uses 256 kWh. At the national residential average of $0.166 per kWh (March 2026), home charging costs $42 a month. The saving is $180 a month, or $2,160 a year.
Prices vary a lot by province. That same 120 litres cost $186 in Alberta (155.4 cents per litre) and $260 in Newfoundland and Labrador (216.5 cents per litre) on October 14. Home charging varies too: Quebec's residential rate near 7.3 cents per kWh puts the same 256 kWh at about $19 a month. Check your province's pump price and your own electricity rate before relying on these figures. The calculator linked below has both US and Canada modes; switch the unit selector to Canada for kilometres, litres, and Canadian prices.
How long until fuel savings cover the price gap?
EVs often cost more than a comparable gasoline car, so the natural question is how long fuel savings take to repay that difference. With annual savings of $817 under the base case, a $5,000 price gap takes about 6.1 years to recover from fuel alone, and a $10,000 gap takes about 12.2 years. This is fuel only. It leaves out insurance, taxes, and maintenance. EV purchase incentives change the price itself, but those rules change often and should be checked on current rules.
The gap grows with mileage
Monthly distance decides how much the fuel difference matters. Using gasoline at 30 mpg and $3.50 a gallon against an EV at 3.5 miles per kWh and home charging at $0.17/kWh:
500 miles a month: gasoline $58, EV $24, saving $34 a month ($409 a year).
1,000 miles a month: gasoline $117, EV $49, saving $68 a month ($817 a year).
1,500 miles a month: gasoline $175, EV $73, saving $102 a month ($1,226 a year).
2,000 miles a month: gasoline $233, EV $97, saving $136 a month ($1,634 a year).
3,000 miles a month: gasoline $350, EV $146, saving $204 a month ($2,451 a year).
High-mileage drivers gain the most. Very low-mileage drivers save little, so the payback period for a price gap gets long. Your own monthly distance is the input that matters most.
Try the numbers yourself
A fuel-cost calculator built from these same inputs lets you test your own scenario: monthly distance, gasoline or diesel with your efficiency and price, EV efficiency and charging rate, and the price gap between two cars. It returns monthly fuel costs for both, monthly and annual savings, and the payback period.
Two cautions apply. First, fuel prices change weekly, so update the price inputs before relying on a result. Second, official efficiency figures differ from real driving. Driving habits, seasons, heating and air conditioning all move the numbers, and EV efficiency in particular drops in winter.
FAQ
Is an EV always cheaper on fuel? On fuel alone, usually, but not always. Home charging saves the most, while DC-fast-only charging can cost more than gasoline at current prices, so a driver who almost never charges at home should run their own numbers.
How do I pick a charging rate? Match your usual method. Use a preset for home, public Level 2, or DC fast charging, or enter your own rate from your electricity bill or your charging provider's app.
Does the calculator include insurance or taxes? No. It compares fuel only. Insurance, vehicle taxes, maintenance, and battery replacement are not included, so total ownership cost needs a separate check.
The gap is large for an average driver, grows with mileage, and shrinks with expensive public charging and low mileage. Running your own distance and charging method through the calculator gives a clearer answer than any general claim about which type of car is cheaper.
Comments
Post a Comment