If you’re on a tight budget and tired of watching gas prices eat up your paycheck, these are the best used cars under $10,000 that are truly cheap to fill up. When I was in college, I remember pulling into a gas station with $12 in my account and praying it would get me through the week. That’s when I learned that not all fuel-efficient cars are created equal — some just sip gas like it’s fine wine. If you’re looking for used vehicles in 2025 that go easy on your wallet every time you fill up, this list is your go-to guide.
I’ve rounded up affordable used cars available under ten grand that not only get great miles per gallon but also have smaller tanks, meaning you’ll spend less per visit to the pump — not just over time.
Let’s break down the top picks that are cheap to fuel, reliable enough to drive daily, and smart choices if you’re watching your dollars.
🚘 Best Cars Under $10k That Are Cheap to Fuel
1. Toyota Prius (2010–2013)
- Average MPG: 50–53
- Tank Size: 11.9 gallons
- Estimated Fill-Up Cost (at $4/gallon): ~$47.60
- Range per Tank: 590+ miles
This is the OG fuel-sipper. It’s not just fuel-efficient — it has a relatively small tank. Even with higher gas prices, filling up a Prius doesn’t sting nearly as bad as most sedans or crossovers. I’ve owned one, and there’s real joy in watching the gas needle barely move after 100 miles.
➡ Pro Tip: Look for the base II or III trims. They tend to be the cheapest and still have all the essentials.
2. Honda Fit (2009–2013)
- Average MPG: 28–35
- Tank Size: 10.6 gallons
- Estimated Fill-Up Cost: ~$42.40
- Range per Tank: ~330–370 miles
The Fit is a marvel of space and efficiency. Not only is it practical and fun to drive, but it’s also one of the cheapest cars to fill up regularly. It’s perfect for city drivers, students, and anyone who doesn’t need to haul much beyond groceries or a backpack.
3. Hyundai Accent (2012–2017)
- Average MPG: 30–38
- Tank Size: 11.4 gallons
- Estimated Fill-Up Cost: ~$45.60
- Range per Tank: ~380–430 miles
Don’t sleep on the Hyundai Accent. It’s a no-frills car, but reliable and super efficient. It’s one of those vehicles that often flies under the radar — which means you can usually score one for under $8,000 in decent shape. Low insurance rates are a bonus.
4. Nissan Versa (2012–2018)
- Average MPG: 31–39
- Tank Size: 10.8 gallons
- Estimated Fill-Up Cost: ~$43.20
- Range per Tank: ~360–420 miles
The Versa is a solid option for drivers who just want something that works — and won’t hurt to refuel. While the interior can feel a bit dated, its fuel economy and low total ownership cost make it an easy recommendation for anyone commuting short distances.
5. Toyota Yaris (2009–2014)
- Average MPG: 30–37
- Tank Size: 11.1 gallons
- Estimated Fill-Up Cost: ~$44.40
- Range per Tank: ~360–400 miles
Small tank, great gas mileage, and Toyota reliability. The Yaris is a favorite among delivery drivers and students for a reason. If you can find a clean one with under 150k miles, it’s likely to last you another 100k without major headaches.
6. Chevrolet Spark (2013–2016)
- Average MPG: 30–38
- Tank Size: 9.2 gallons
- Estimated Fill-Up Cost: ~$36.80
- Range per Tank: ~300–350 miles
This is the cheapest car to fill up on this entire list. With one of the smallest gas tanks in the U.S. market, you’ll be in and out of the gas station in under two minutes. Sure, it’s compact — but for city driving or short trips, it just works.
7. Ford Fiesta (2011–2015)
- Average MPG: 28–37
- Tank Size: 12 gallons
- Estimated Fill-Up Cost: ~$48
- Range per Tank: ~350–400 miles
The Fiesta is often overlooked, but it’s a fun little car with good gas mileage. Manual versions are especially efficient and a great option if you’re looking for something affordable with a little bit of a sporty feel on a budget.
8. Mazda2 (2011–2014)
- Average MPG: 29–35
- Tank Size: 11.3 gallons
- Estimated Fill-Up Cost: ~$45.20
- Range per Tank: ~330–390 miles
Mazda’s take on the city car is nimble and efficient, and it’s another vehicle with a small tank and light body. It doesn’t have a ton of power, but it makes up for that with excellent cornering and low operating costs.
📊 Quick Comparison Table
| Model | MPG Range | Tank Size | Fill-Up Cost (@$4/gal) | Est. Range per Tank |
|---|---|---|---|---|
| Toyota Prius | 50–53 | 11.9 gal | ~$47.60 | ~590 miles |
| Honda Fit | 28–35 | 10.6 gal | ~$42.40 | ~330–370 miles |
| Hyundai Accent | 30–38 | 11.4 gal | ~$45.60 | ~380–430 miles |
| Nissan Versa | 31–39 | 10.8 gal | ~$43.20 | ~360–420 miles |
| Toyota Yaris | 30–37 | 11.1 gal | ~$44.40 | ~360–400 miles |
| Chevy Spark | 30–38 | 9.2 gal | ~$36.80 | ~300–350 miles |
| Ford Fiesta | 28–37 | 12 gal | ~$48 | ~350–400 miles |
| Mazda2 | 29–35 | 11.3 gal | ~$45.20 | ~330–390 miles |
💡 Final Thoughts
What makes a car “cheap to fill up” isn’t just fuel efficiency — it’s also the tank size. A full-size SUV might get 22 MPG and have a 20-gallon tank, which means $80+ per fill-up. Every car here combines great mileage with smaller tanks, so you’re never stuck with a $60 gas receipt.
These used cars under $10k are smart buys for anyone who wants low monthly expenses and less stress at the pump. Whether you’re a student, a delivery driver, or just a savvy commuter, these are dependable picks that make every dollar stretch further.