Your numbers · measured energy, modeled everything you enter

Run it on your numbers.

This car’s measured energy per mile, priced at the rate you would pay, against the car you drive now.

Your car, miles per gallon

Gas, dollars a gallon

AAA Tennessee, 2026-08-24.

Electricity, cents a kWh

Charging at home? Enter your own rate.

Energy per mile, Wh

This car, measured: 326.8 Wh a mile.

Miles a month

This car has averaged 2,553 a month.

13.0¢

Electric, per mile

28.0¢

Your car, per mile

	Electric	Your car
A month	$332.81	$714.84
A year	$3,994	$8,578

At these numbers, electric is $382.03 a month cheaper.

Energy only. The energy per mile is measured, this car’s own; the prices are what you entered, so the totals are modeled. Insurance, tires and depreciation are separate lines on the Ledger.

Take the data

The daily rows behind the charts: miles, drives, miles driven by the car, kWh added, charging spend and idle range lost, one row for each day the car did something.

Download the CSV ↓ 24 days, August 25 to September 18.

Built by Paddock20

One architect. A fixed price, in writing.

Working software every week. This site is a Paddock20 build.

Book a Fit Call

A written build order: what we’d build, what it costs, how long it takes. Yours to keep either way.

Follow the miles

Every week’s miles, charging and cost per mile, straight from the car, in the feed.

Feed Field notes