Electric Vehicle vs Gas Car Savings Calculator
Calculate the annual fuel cost savings of switching from a gas car to an electric vehicle, based on miles driven, gas prices, and electricity costs.
This free online electric vehicle vs gas car savings calculator provides instant results with no signup required. All calculations run directly in your browser — your data is never sent to a server. Enter your values below and see results update in real time as you type. Perfect for everyday calculations, homework, or professional use.
Results
Annual Gas Cost
$1,680.00
Annual EV Charging Cost
$514.29
Annual Savings
$1,165.71
CO2 Saved (lbs/year)
9408 lbs
How to Use This Calculator
Enter your input values
Fill in all required input fields for the Electric Vehicle vs Gas Car Savings Calculator. Most fields include unit selectors so you can work in your preferred unit system — metric or imperial, whichever matches your problem.
Review your inputs
Double-check that all values are correct and that you have selected the right units for each field. Incorrect units are the most common source of calculation errors and can produce results that are off by factors of 2, 10, or more.
Read the results
The Electric Vehicle vs Gas Car Savings Calculator instantly computes the output and displays results with units clearly labeled. All calculations happen in your browser — no loading time and no data sent to a server.
Explore parameter sensitivity
Try adjusting individual input values to see how the output changes. This is a quick and effective way to develop intuition about how different parameters influence the result and to identify which inputs have the largest effect.
When to Use This Calculator
- •Use the Electric Vehicle vs Gas Car Savings Calculator when you need accurate results quickly without the risk of manual computation errors or unit conversion mistakes.
- •Use it to verify calculations made by hand or in spreadsheets — an independent check can catch errors before they lead to costly decisions.
- •Use it to explore how changing input parameters affects the output — a quick way to develop intuition and identify the most influential variables.
- •Use it when collaborating with others to ensure everyone is working from the same numbers and applying the same assumptions.
About Electric Vehicle vs Gas Car Savings Calculator
The Electric Vehicle vs Gas Car Savings Calculator helps you understand the financial impact of switching from a traditional gasoline vehicle to an electric vehicle. While EVs typically cost more upfront, they offer dramatically lower operating costs — fuel savings alone can amount to thousands of dollars per year for typical drivers. This calculator compares the annual fuel costs of both vehicle types using your actual driving patterns and local energy prices, and also estimates the carbon dioxide emissions you'd avoid by switching. Whether you're considering an EV purchase, evaluating long-term cost of ownership, or simply curious about the environmental impact, this calculator provides clear, personalized numbers to inform your decision.
The Math Behind It
Formula Reference
Gas Cost
Cost = (Miles / MPG) × Price/gal
Variables: Annual cost of gasoline
EV Cost
Cost = (Miles / mi/kWh) × $/kWh
Variables: Annual cost of electricity
CO2
CO2 lbs = Gallons × 19.6
Variables: EPA average emissions per gallon
Worked Examples
Example 1: Average Commuter
Driving 12,000 miles/year in a 28 MPG car at $3.50/gas, considering an EV at 3.5 mi/kWh and $0.15/kWh.
Save $986/year on fuel costs, plus avoid 8,400 lbs of CO2 emissions. Over 10 years, that's nearly $10,000 in fuel savings and 84,000 lbs of CO2.
Example 2: High-Mileage Driver
20,000 miles/year, 22 MPG SUV at $4.00/gallon, EV at 3.0 mi/kWh and $0.18/kWh.
Save $2,436/year — the higher the mileage, the bigger the savings. Over 100,000 miles, savings would total $12,180 just from fuel.
Common Mistakes & Tips
- !Forgetting maintenance savings. EVs save another $1,000-2,000/year on maintenance.
- !Ignoring tax incentives. Up to $7,500 federal credit can dramatically improve TCO.
- !Using DC fast charging rates for typical use. Most charging is at home, much cheaper.
- !Not accounting for range loss in cold climates or highway driving.
Related Concepts
Frequently Asked Questions
Are EVs really better for the environment?
Yes, in almost all cases. Even on the dirtiest electrical grid, EVs produce less CO2 than gas cars over their lifetime. Manufacturing creates an initial 'carbon debt' (mostly battery production), but this is offset within 1-4 years depending on grid mix. After that, EVs are dramatically cleaner. As grids decarbonize, EVs become even better.
How long does it take to recover the EV price premium?
Typically 4-7 years through fuel savings alone, faster with maintenance savings and tax credits. For a $5,000 price premium with $1,500/year savings (fuel + maintenance), payback is 3.3 years. After that, the EV saves money for the rest of its life — typically another 100,000+ miles.
What about EV battery replacement costs?
Modern EV batteries are warrantied for 8-10 years/100,000 miles and typically last 15-20 years before needing replacement. Replacement costs ~$5,000-15,000 (varies by model). However, used EVs with old batteries are still drivable with reduced range. Most owners never need to replace their battery during ownership.
Is home charging really cheap enough?
Yes, dramatically. At average US electricity prices ($0.15/kWh), driving an efficient EV costs about $0.04/mile vs $0.14/mile for a 25 MPG gas car. The cost difference per mile is roughly 3-4x in favor of EVs. Even in high-electricity states like Hawaii ($0.40/kWh), EVs still beat gas vehicles.