Where you charge
Public fast charging can materially narrow the gap. Use your actual charging pattern, not an idealized all-home scenario.
An independent EV ownership decision tool
Make the EV question
specific to your life.
Fuel savings are only useful when the assumptions are visible. Build a transparent annual driving scenario, see where the estimate is sensitive, and take the numbers—not an ad—to your next vehicle decision.
Build your scenario ↓01 — Your scenario
A cost estimate you can inspect.
Every input is editable. The public-charging factor is deliberately separated from home electricity so the convenience trade-off stays visible.
ESTIMATED ANNUAL ENERGY COST
EV$0
Gas vehicle$0
Estimated annual difference$0
Replace default assumptions with your own receipts before making a purchase decision.
02 — Read the result correctly
What changes the answer most?
Vehicle efficiency
Compare the specific trim’s EPA efficiency with your current vehicle’s real fuel economy.
What this excludes
Purchase price, insurance, maintenance, financing, taxes, and depreciation need their own evidence—not a hidden assumption.
03 — Method & sources
Transparent inputs beat impressive-looking outputs.
Synteria Drive Lab is a planning worksheet, not financial or automotive advice. We show our arithmetic so visitors can replace any default that does not match their situation.
Energy price contextU.S. Energy Information AdministrationResidential electricity price series
Fuel price contextAAAState and national regular-gas averages
Your decisionYour utility bill and local pump pricesReplace defaults before a purchase decision
04 — Original field notes
Before you compare vehicles, compare the questions.
CHARGING
Home charging is a habit, not a checkbox
How to turn a utility bill into a useful EV assumption.OWNERSHIP
The five costs a fuel calculator cannot settle
A practical evidence list for a complete ownership comparison.DECISION