Everyone budgets for a sports car wrong. The insurance gets attention, the tyres get attention, and fuel gets waved off as "well, it's a sports car." I pulled EPA annual fuel costs by vehicle class for everything rated since 2020, gasoline only, and the ranking put the two-seater above the things people apologise for buying.
| Vehicle class | Models rated | Fuel per year | Combined MPG |
|---|---|---|---|
| Two-seaters | 426 | 19.0 | |
| Full-size SUV, 4WD | 916 | 18.9 | |
| Minicompact cars | 271 | 20.4 | |
| Full-size pickup, 4WD | 391 | 17.7 | |
| Midsize wagons | 64 | 21.6 | |
| Small SUV, 2WD | 472 | 27.1 | |
| Small wagons | 131 | 29.1 |
Look at the top two rows carefully. The two-seater and the full-size 4WD SUV return effectively identical economy — 19.0 mpg against 18.9. The two-seater still costs $322 more per year to feed.
The premium-fuel tax
Same miles per gallon, more money, means the gallons cost more. Two-seaters overwhelmingly require premium; full-size SUVs and pickups mostly run on regular. At a typical 60–80 cent spread per gallon, that surcharge lands on every fill for the life of the car.
This is the part of sports-car ownership nobody puts in the spreadsheet. It is not a big number on any single visit to the pump — six or seven dollars — which is exactly why it disappears. Over 12,000 miles a year it is a set of tyres.
And unlike most running costs, you cannot drive around it. Gentle driving improves your MPG; it does not change the octane rating printed inside the fuel flap. On an engine with high compression or forced induction, the manufacturer's premium requirement is a real engineering constraint, not marketing.
The minicompact result is the strange one
Third place goes to minicompact cars at $3,888 a year — small cars, costing nearly as much to fuel as a full-size SUV. That is the same story twice: the class is full of premium-burning European hatchbacks and small performance cars, not the economy runabouts the name suggests. EPA classes are defined by interior volume, so a tiny expensive car and a tiny cheap car land in the same bucket.
It is a useful reminder that vehicle size is a poor proxy for running cost. What decides your fuel bill is the engine, the octane it demands, and how many miles you actually drive.
Where the real savings sit
The bottom of the table is where the interesting money is. Small wagons — $2,429 a year at 29.1 mpg — and small 2WD SUVs at $2,469. Against the two-seater that is a $1,875 annual difference, or about $9,400 over five years of ownership.
That gap is larger than most people's negotiating win on the purchase price, and it repeats every single year. If you are weighing two cars a few thousand dollars apart, the fuel column often settles the argument faster than the sticker does.
One caveat: EPA annual figures assume 15,000 miles a year at a national average fuel price. If you drive 6,000 miles, halve everything; the gap shrinks with you. A weekend-only sports car costs far less to run than this table implies — which is exactly how most of them are used.
If you want the frugal end of the market ranked properly, the most fuel-efficient used cars list is built on the same EPA data, and the SUV comparison covers why the gap inside that category is wider than the gap between categories. To check the exact rating for a specific used car rather than its class, pull the original window sticker by VIN — engine and trim change the number more than the badge does.
Frequently asked questions
Do sports cars really cost more to fuel than SUVs?
In annual fuel cost, yes. EPA data since 2020 puts two-seaters at $4,304 a year against $3,982 for full-size 4WD SUVs, despite nearly identical economy of 19.0 and 18.9 mpg.
Why do two-seaters cost more to run at the same MPG?
Premium fuel. Most two-seaters require it while full-size SUVs and pickups generally run on regular, and the 60–80 cent per gallon spread applies to every fill.
Why are minicompact cars so expensive to fuel?
EPA classes are defined by interior volume, so small performance and luxury cars land in the same bucket as economy runabouts. The class averages $3,888 a year at 20.4 mpg because of what is in it, not because small cars are thirsty.
Which vehicle classes are cheapest to fuel?
Small wagons at $2,429 a year (29.1 mpg) and small 2WD SUVs at $2,469 (27.1 mpg) — roughly $1,875 a year less than a two-seater.
Denis Kataev is a serial solopreneur and the founder of ForCar. With 15+ years in software engineering and 10 years in SEO, he builds data-driven products end to end — backed by a sharp eye for design. At ForCar he mines proprietary vehicle datasets, turning raw numbers into buying advice you can actually trust.
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