Tesla Home Charging vs Gas Cost: What You Actually Save

Charging a Tesla at home costs about 5 cents a mile at the US average electricity rate, against roughly 11 cents a mile for a 28 MPG gas car at $3.10 a gallon. That's a saving of about $690 a year over 12,000 miles. The gap is real, but it's smaller than most EV comparisons claim, and in a few states it disappears entirely.

The most useful way to think about it is a single number: the gas price at which your gas car would cost the same per mile as charging at home. Below that price, gas is cheaper. Above it, you're saving.

Your break-even gas price

For a Model Y Long Range charged at home, compared with a 28 MPG gas car:

At the US average rate, gas would have to fall to $1.48 a gallon to match home charging. It won't, so the saving is safe. But at 35 cents a kWh — common in much of California — the break-even is $3.05, which is roughly what gas actually costs. At that point you're not saving on fuel at all.

Every figure here includes about 10% charging loss, the energy that goes to heat rather than the battery. Articles that skip it overstate EV savings by a tenth.

What you save per year

12,000 miles a year, Model Y Long Range against a 28 MPG gas car at $3.10 a gallon ($1,328 a year in gas):

The pattern is worth stating plainly: cheap electricity makes a Tesla dramatically cheaper to run, average electricity makes it clearly cheaper, and expensive electricity makes it a wash or worse. Anyone telling you EVs always cost less per mile hasn't checked Hawaii or a top-tier California rate.

The comparison nobody runs: a hybrid

Most EV-versus-gas articles compare against a thirsty car. Against an efficient hybrid, the picture changes:

Against a 40 MPG hybrid at an expensive California rate, gas wins until it passes $4.36 a gallon. If you're replacing a Prius rather than a pickup, and you live somewhere electricity is expensive, fuel is not the reason to buy a Tesla.

How to fix an expensive rate

If your standard rate puts you in the bottom rows of those tables, the answer usually isn't to give up — it's to change the rate you pay for charging.

Most utilities offer a time-of-use or dedicated EV plan where overnight power costs far less than the standard rate. A California household on a 35-cent standard rate can often charge overnight nearer 25 cents, which moves a Model Y from break-even back to about $395 a year in savings. Charging is uniquely suited to this because it's a large load you can shift entirely into cheap hours with one setting in the car.

Two things to check before switching:

• The peak rate usually goes up too. If your household uses a lot of power in the late afternoon, a time-of-use plan can cost you more overall even as charging gets cheaper.
• Set Scheduled Departure in the car (Controls → Charging) so charging actually happens in the cheap window rather than the moment you plug in.

What the per-mile comparison leaves out

Fuel is only part of the gap, and it cuts both ways.

In the Tesla's favour: no oil changes, no spark plugs, no exhaust or timing-belt work, and brake pads that often last past 100,000 miles because regenerative braking does most of the slowing. Our Tesla maintenance cost guide puts real numbers on this; it's typically a few hundred dollars a year in the Tesla's favour, which is comparable to the fuel saving itself.

Against it: tires wear faster on heavy, torquey cars, insurance usually costs more than for an equivalent gas car, and there's the one-off cost of installing a home charger. Depreciation has also been steeper than for most gas cars, which dwarfs fuel either way.

And the assumption underneath all of it: you need somewhere to plug in. If you'd be relying on public charging, use the Supercharger figures instead — roughly 10 to 14 cents a mile, which is the same as or worse than gas. Our California Supercharger cost guide breaks those rates down.

Frequently asked questions

Is it cheaper to charge a Tesla at home or buy gas?

At home, almost always — about 5 cents a mile against 11 cents for a 28 MPG gas car at the US average electricity rate. The exception is states with very expensive electricity, where the two are roughly equal.

How much does it cost to charge a Tesla at home per month?

About $53 for 1,000 miles in a Model Y Long Range at 17 cents per kWh. At a cheap 12-cent rate it's $37; in much of California it's closer to $109.

What is the break-even gas price for a Tesla?

At the US average electricity rate, about $1.48 a gallon against a 28 MPG car — meaning gas would have to be far cheaper than it is for the gas car to win. On an expensive 35-cent rate it rises to about $3.05.

Does charging at night actually save money?

Only if you're on a time-of-use or EV rate where overnight power is cheaper. On a flat rate, the time of day makes no difference to cost. It's worth asking your utility, because the saving is often 30–60% on charging.

Do I save money if I can only use Superchargers?

Very little, and sometimes none. Supercharging costs roughly 10–14 cents a mile, which is about the same as a 28 MPG gas car. The savings in EV ownership come from home charging.

Does cold weather change the comparison?

Yes. Winter energy use rises 10–30%, so your cost per mile rises with it. Gas cars also lose efficiency in the cold, but by less.

The bottom line

At an average US electricity rate, charging a Tesla at home costs less than half what the same miles cost in gas — about $690 a year at 12,000 miles, and more if you're replacing something thirsty.

Work out your own break-even gas price before you count on it, though. Take your electricity rate, multiply your car's kWh per mile by it, divide by 0.9 for charging losses, then multiply by the MPG of the car you're comparing against. If that number is below what gas actually costs where you live, you're saving. If it isn't, an off-peak electricity rate is the thing to fix.