EV Home Charging Cost vs. Gasoline Annual Savings Calculator
Calculate cost to charge an electric vehicle (kWh) and compare annual EV driving cost vs a gas car.
Reviewed by: Sarah Jenkins, RDN, PE • Residential Engineering & Nutrition Desk
Methodology: Verified Formula
Presets:
Annual Fuel Savings Driving EV
$1,109/yr ($5,545 / 5 yrs)
Annual EV Charging Cost
$578.57/yr ($48/mo)
Annual Gasoline Cost
$1,688/yr ($141/mo)
EV cost per mile: $0.043 vs Gas: $0.125.
Scenario Comparison & Benchmark Table (EV Charging vs Gas)
Compare how scaling Annual Miles Driven affects your output (click any row to load those values into the calculator above):
| Annual Miles Driven | Annual Fuel Savings Driving EV | Annual EV Charging Cost | Annual Gasoline Cost |
|---|---|---|---|
| 6,750 | $554.46/yr ($2,772 / 5 yrs) | $289.29/yr ($24/mo) | $843.75/yr ($70/mo) |
| 10,125 | $831.70/yr ($4,158 / 5 yrs) | $433.93/yr ($36/mo) | $1,266/yr ($105/mo) |
| 13,500 (Baseline) | $1,109/yr ($5,545 / 5 yrs) | $578.57/yr ($48/mo) | $1,688/yr ($141/mo) |
| 16,875 | $1,386/yr ($6,931 / 5 yrs) | $723.21/yr ($60/mo) | $2,109/yr ($176/mo) |
| 20,250 | $1,663/yr ($8,317 / 5 yrs) | $867.86/yr ($72/mo) | $2,531/yr ($211/mo) |
| 27,000 | $2,218/yr ($11,089 / 5 yrs) | $1,157/yr ($96/mo) | $3,375/yr ($281/mo) |
Mathematical Formula & Step-by-Step Guide
Primary mathematical equation used by this model:
EV Annual Cost = (Miles / mi_per_kWh) × $/kWh; Gas Annual Cost = (Miles / MPG) × $/Gal
- Configure your primary input (Annual Miles Driven, baseline set to 13,500) using either the direct numeric box or synchronized range slider.
- Adjust the remaining parameters (EV Efficiency (Miles per kWh - Avg = 3.5), Home Charging Electricity Rate ($/kWh), Comparable Gas Car MPG, Gasoline Price ($/Gallon)) to mirror your exact scenario.
- Examine the primary output alongside the secondary breakdown metrics and the 6-tier benchmark comparison table below.
Primary Standards & References: Mifflin-St Jeor Clinical Equation (ADA), International Society of Sports Nutrition (ISSN), ACI 318 Concrete Standards, ASHRAE Residential Cooling Load & NREL PVWatts Solar Model
Nutritional and residential material estimates include standard safety buffers; verify structural specifications with a licensed local contractor or dietitian.
Nutritional and residential material estimates include standard safety buffers; verify structural specifications with a licensed local contractor or dietitian.
Frequently Asked Questions — EV Charging vs Gas
What mathematical formula does the EV Home Charging Cost vs. Gasoline Annual Savings Calculator use?
This calculator implements the verified relationship: EV Annual Cost = (Miles / mi_per_kWh) × $/kWh; Gas Annual Cost = (Miles / MPG) × $/Gal. Each variable (Annual Miles Driven, EV Efficiency (Miles per kWh - Avg = 3.5), Home Charging Electricity Rate ($/kWh), Comparable Gas Car MPG, Gasoline Price ($/Gallon)) is evaluated in real time using double-precision floating-point arithmetic so there is zero rounding drift across multi-step scenarios.
How does changing Annual Miles Driven impact the final result?
Annual Miles Driven acts as the primary driver in this model (default baseline: 13,500). Use the Reference Benchmark Table on this page to compare how scaling Annual Miles Driven from conservative to aggressive levels changes both the primary outcome and secondary ratios.
What standards and sources back this EV Charging vs Gas methodology?
Our model is audited by Sarah Jenkins, RDN, PE • Residential Engineering & Nutrition Desk and calibrated against Mifflin-St Jeor Clinical Equation (ADA), International Society of Sports Nutrition (ISSN), ACI 318 Concrete Standards, ASHRAE Residential Cooling Load & NREL PVWatts Solar Model. Note: Nutritional and residential material estimates include standard safety buffers; verify structural specifications with a licensed local contractor or dietitian.