What Is the EV vs. Gas Car Cost Calculator?
The EV vs. Gas Car Cost Calculator is a free online tool designed for users who need quick, accurate calculations in the practical calculation space. By entering your annual miles driven, gas price, car mpg, you get instant results including annual gas fuel cost, annual ev fuel cost, 5-year total savings. No formulas to memorize, no spreadsheets to build — just enter your numbers and get the answer in seconds. Whether you're a beginner or experienced professional, this calculator saves you time and eliminates guesswork.
Why This Calculation Matters
Getting annual gas fuel cost right can make the difference between success and costly mistakes. In practical calculation, small errors compound quickly. Manual calculations are error-prone and time-consuming, especially under pressure. This calculator applies proven formulas used by users worldwide, giving you confidence that your numbers are correct. Use it to get accurate results with precision and avoid common pitfalls that trip up beginners.
When Should You Use This Calculator?
This tool is most useful when you know your annual miles driven and need to find the right annual gas fuel cost. It's also great for quick estimates before committing to a decision, and to double-check manual calculations or professional quotes, and when comparing different scenarios side by side. Bookmark this page and come back whenever you need a fast, reliable answer — the calculator is always free and requires no signup.
EV vs. Gas Car Cost Calculator
Gas Vehicle
Electric Vehicle
EV vs Gas: 5-Year Cost Comparison at 12,000 Miles/Year
Assumes $3.50/gal, 28 MPG, $0.14/kWh, 3.5 mi/kWh. Includes estimated maintenance difference.
| Year | Gas Total Cost | EV Total Cost | Cumulative Savings | CO₂ Saved (lbs) |
|---|---|---|---|---|
| 1 | $1,500 | $480 | $1,020 | 8,400 |
| 2 | $3,000 | $960 | $2,540 | 16,800 |
| 3 | $4,500 | $1,440 | $4,060 | 25,200 |
| 4 | $6,000 | $1,920 | $5,580 | 33,600 |
| 5 | $7,500 | $2,400 | $7,100 | 42,000 |
How to Use This Calculator
- Enter Your Annual Miles Driven: Start by entering your annual miles driven — this is the primary input for the calculation.
- Fill In Additional Details: Complete the remaining fields: gas price, car mpg, gas car purchase price, electricity rate, ev efficiency, ev purchase price. Each value refines the calculation for greater accuracy.
- Click Calculate: Hit the Calculate button to run the numbers. Results appear instantly below.
- Review Your Results: Check your annual gas fuel cost, annual ev fuel cost, 5-year total savings. Use these figures to inform your next decision or compare against alternative scenarios.
How It Works
This calculator compares the total cost of ownership between an electric vehicle and a gas car, including fuel costs, maintenance savings, and purchase price difference.
The basic rule:
- Gas fuel cost = (annual miles / MPG) × gas price per gallon
- EV fuel cost = (annual miles / EV efficiency) × electricity rate per kWh
- Break-even point = price difference / (annual gas cost − annual EV cost + maintenance savings)
- CO₂ savings based on EPA average of 19.6 lbs CO₂ per gallon of gas burned
EVs typically save $800–$1,500/year in fuel and $500+/year in maintenance. However, the higher purchase price means it may take 3–7 years to break even. Consider available tax credits ($7,500 federal) which can dramatically shorten the payback period.
Tips & Considerations
- Double-check your annual miles driven before calculating — even small input errors can significantly change your results.
- Run the calculator with different values to compare scenarios and find the optimal approach for your situation.
- Pay attention to both annual gas fuel cost and annual ev fuel cost — they work together to give you the full picture.
- Bookmark this page for quick access next time you need to get accurate results.
- If you're unsure about your ev purchase price, start with a conservative estimate and adjust from there.
Frequently Asked Questions
How much cheaper is it to fuel an EV vs a gas car?
On average, EV drivers spend 60-70% less on fuel. At national averages ($3.50/gal gas, $0.14/kWh electricity), driving 12,000 miles costs about $1,500 in gas but only $480 in electricity. Exact savings depend on local gas and electricity prices.
What is a good EV efficiency rating?
Most modern EVs achieve 3-4 miles per kWh. Efficient models like the Tesla Model 3 and Hyundai Ioniq 6 get 4+ mi/kWh, while larger EVs like trucks may get 2-2.5 mi/kWh. The default 3.5 mi/kWh represents a typical mid-size EV.
How long does it take for an EV to pay for itself?
Typically 4-7 years when comparing similar vehicle classes. If the EV costs $6,000 more and saves $1,500/year in fuel plus $500 in maintenance, break-even is about 3 years. Federal and state tax credits can reduce this to under 2 years.
Do EVs really save on maintenance?
Yes. EVs have no oil changes, transmission fluid, spark plugs, or timing belts. Brake pads last 2-3x longer due to regenerative braking. Average EV maintenance is $0.03/mile vs $0.06/mile for gas cars — roughly $400/year savings on 12,000 miles.
How much CO₂ does switching to an EV save?
A gas car averaging 28 MPG emits about 8,400 lbs of CO₂ per 12,000 miles. Even accounting for power plant emissions from charging, an EV produces roughly 50-70% less CO₂. In areas with clean grids (hydro, solar, wind), savings are even greater.
Does home charging vs public charging affect the comparison?
Significantly. Home charging at off-peak rates ($0.08-0.12/kWh) is cheapest. DC fast charging stations charge $0.30-0.60/kWh, which cuts into savings. If you rely entirely on fast charging, your fuel savings vs gas drop from ~70% to ~30-40%.