Why your gas is 30% higher than 2019 — and what carpooling actually saves you

If you fueled up a 14-gallon tank in January 2019, you spent about $36. The same tank today costs around $49. That difference — roughly $13 every fill — is the single most consistent thing American drivers complain about, and the most easily quantified.

This article does two things. First, it explains why gas is higher, in plain terms, separating the parts you can blame on global markets from the parts you can blame on local policy. Second, it answers the question that actually matters for your household: how much money does carpooling, or switching to public transit, put back in your pocket per year?

What's actually in the price of a gallon

The U.S. Energy Information Administration breaks the retail price of a gallon of gasoline into four buckets:

1. Crude oil — what oil producers charge refiners. Set on global markets, mostly outside U.S. control.
2. Refining costs and margins — what refiners earn for turning crude into gasoline.
3. Distribution and marketing — moving fuel from refinery to your pump, plus the station's cut.
4. Federal, state, and local taxes — the federal tax has been $0.184/gal since 1993. State taxes range from California's $0.60/gal to Alaska's $0.09/gal.

In a typical month, crude is around half the price you pay. Taxes are roughly 15%. Refining and distribution make up the rest.

Why higher than 2019, specifically

A few things shifted at the same time:

• Crude oil sits in a higher band. Pre-COVID, U.S. crude traded around $55/barrel. It now spends most of its time between $70 and $85. Even when it dips, it doesn't dip as far as it used to.
• Refining capacity didn't keep up. The U.S. lost roughly 1 million barrels per day of refining capacity between 2019 and 2023 as older refineries closed. Less supply, same demand, higher margins.
• State taxes have ticked up in a few high-population states. California, Illinois, and Pennsylvania all index gas taxes to inflation or fuel-economy targets, which means the tax line on your receipt automatically grows.
• Ethanol and additive costs are also higher, though they're a small slice.

What isn't in this list: there's no single villain. Refiners aren't conspiring; OPEC quotas matter but they don't fully explain a 30% jump. Most of the increase is structural — higher baseline crude, fewer refineries, a shift in state policy.

The household-savings math (this is the useful part)

Here's where most coverage gets fuzzy. Telling you to carpool to "lower national gas prices" is mostly fiction — U.S. gasoline demand is set by ~140 million drivers and one household's behavior is a rounding error. But for your household specifically, carpooling is one of the biggest fixed-cost reductions you can make.

Let's use defensible numbers. Assume:

• You drive 15,000 miles/year (close to the U.S. average)
• Your car gets 28 mpg (close to the average for cars on the road)
• Gas costs $3.50/gal where you live

That's $1,875/year in gasoline alone.

Now suppose you carpool with one other person, twice a week, for your 15-mile-each-way commute. That's 30 miles/day × 2 days/week × 50 weeks = 3,000 miles you don't drive. At 28 mpg and $3.50/gal, you save $375/year just on gas.

But carpool savings stack. The miles you don't drive also mean:

• Less wear-and-tear on the car. AAA estimates total operating cost (fuel + maintenance + tires + depreciation) at around $0.18/mile for a sedan. Skipping 3,000 miles saves another ~$540.
• Potentially lower insurance premiums. Many insurers offer "low mileage" tiers below 7,500 miles/year. Worth a call.
• Time. Not financial, but real — riding shotgun two days a week is two days you can read, sleep, or work.

Total realistic annual savings from a modest 2-day-a-week carpool: about $900-1,200 per household.

If you switch to public transit on the same schedule and your transit pass is $80/month, your savings net out to roughly $1,000-1,400/year, even paying for the pass.

Why we don't claim it "lowers prices"

You'll see other sites do the math the other way: "If 10% of commuters carpooled, demand would drop, and gas would go down X%." The math is real in a textbook sense, but it falls apart in practice. Gasoline demand is famously inelastic in the short run — when prices spike, people don't drive much less, and when they fall, people don't drive much more. The market clears at the price refiners and global crude markets are willing to accept, not at the level your zip code happens to demand. National gas prices are set far upstream of any single state's carpooling habits.

So we'll keep the framing simple: carpooling doesn't lower the sticker price at the pump. It lowers the bill you pay over the course of a year. That's a thousand bucks. That's real.

What to do this week

If gas is the line item you most want to attack:

1. Track your actual miles. Most cars have a mileage display; use it. The "I think I drive about" number people give is almost always 20% off.
2. Run the math for one possible carpool partner. A coworker on a similar route, two days a week, is the realistic version. Saturday-only rideshares don't move the needle.
3. Check your state's gas tax. If you live in a high-tax state and have flexibility, occasional out-of-state fill-ups on long trips actually meaningfully matter.
4. If you're EV-curious, the same 15,000 miles costs roughly $600/year on electricity instead of $1,875 on gas at U.S. average rates. Different math entirely, but worth running.

You can't talk crude markets down. You can put a thousand bucks back in your bank account.

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Numbers in this article reference EIA gasoline data and AAA's annual "Your Driving Costs" report. See our methodology page for sources.