EV vs Gas Cost Comparison in Illinois
See whether an EV beats gas in Illinois for 2026: about $800 a year in fuel savings at $0.161/kWh vs $3.45/gal. Compare full 5-year ownership cost, maintenance, and incentives.
Data last updated July 2026. Sources & methodology
What Illinois Residents Should Know
Electricity in Illinois averages $0.161 per kWh — near the national average — while regular gasoline runs $3.45 per gallon, which is near the U.S. mean. At these rates, an average EV costs roughly $0.05 per mile to drive compared to about $0.12 per mile for a 30-mpg gas car. Over 12,000 miles a year, that translates to approximately $840 in annual fuel savings for the EV owner.
Illinois utilities offer time-of-use rates with off-peak pricing as low as $0.100 per kWh. Charging overnight during off-peak hours can cut your per-mile EV cost by up to 58% compared to peak rates. If you pair off-peak charging with a Level 2 home charger, you can keep annual fuel costs well under $360 — a fraction of what most gas vehicles cost to fuel.
Fuel is only part of the story. EVs skip oil changes and spark plugs and wear brakes far more slowly thanks to regenerative braking, typically saving another $0.04–$0.06 per mile in maintenance — roughly $500–$700 a year at 12,000 miles. The EV case is strongest for Illinois drivers who can charge at home and keep the vehicle for several years; if you rely mostly on public fast charging or drive very little, the advantage narrows.
Illinois residents may also be eligible for up to $4,000 in state EV incentives. With the federal clean vehicle credits having ended September 30, 2025, state programs are now the main purchase incentive, and they can still meaningfully shorten the payback period on a new electric vehicle. Use the calculator above to see exactly how long it takes an EV to break even in your situation.
Avg. Electricity Rate
$0.161/kWh
Avg. monthly bill: $117
Regular Gas Price
$3.45/gal
Natural gas: $1.10/therm
TOU Peak Rate
$0.240/kWh
Off-peak: $0.100/kWh
Incentives in Illinois
Federal clean energy tax credits ended in late 2025 under legislation passed in July 2025; they are shown below for reference since recent purchasers may still claim them. State programs are governed separately and many remain active — always verify current details with the program before purchasing.
| Incentive | Type | Amount | Description |
|---|---|---|---|
| New Clean Vehicle Tax Credit (30D)Ended | tax credit | $7,500 | Federal tax credit of up to $7,500 for new qualifying EVs. Ended September 30, 2025 — vehicles acquired after that date do not qualify. Buyers with a binding contract and payment made by the deadline may still claim it for 2025. |
| Used Clean Vehicle Tax Credit (25E)Ended | tax credit | 30% | Federal tax credit of up to $4,000 (30% of sale price) for qualifying used EVs bought from licensed dealers. Ended September 30, 2025 — vehicles acquired after that date do not qualify. |
| Illinois EV Rebate | rebate | $4,000 | Rebate of up to $4,000 for new EV purchases registered in Illinois. Available for vehicles with MSRP under $80,000. |
EV vs Gas Cost in Illinois: Frequently Asked Questions
- Is it cheaper to drive an EV or a gas car in Illinois?
- At Illinois's $0.161/kWh electricity and $3.45/gal gas, an EV costs about $0.05 per mile versus roughly $0.12 per mile for a 30-mpg gas car — so driving electric is cheaper for most drivers.
- How much can I save per year driving an EV in Illinois?
- Over 12,000 miles a year, an EV owner in Illinois saves roughly $800 in fuel compared with a gas car, before factoring in lower maintenance costs.
- What is the average electricity rate in Illinois?
- Residential electricity in Illinois averages about $0.161 per kWh, and the typical monthly bill is around $117.
- Are there EV incentives in Illinois?
- Yes. Illinois offers Illinois EV Rebate, worth up to $4,000 combined. Federal clean-vehicle credits ended September 30, 2025, so state programs are now the main purchase incentive.
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