The most fuel-efficient cars in 2026 fall into two camps: hybrids lead the gasoline world, and EVs lead on energy efficiency overall. Because the two are measured differently — MPG for liquid fuel, MPGe for electricity — we rank them separately.
Most fuel-efficient gas/hybrid cars (by MPG)
These are the highest combined-MPG models we track, with the EPA’s estimated annual fuel cost.
| Rank | Car | Combined MPG | EPA fuel/yr |
|---|---|---|---|
| 1 | Hyundai Elantra Hybrid | 54 | $1,150 |
| 1 | Toyota Prius | 54 | $1,150 |
| 3 | Toyota Camry Hybrid | 52 | $1,200 |
| 4 | Honda Accord Hybrid | 48 | $1,300 |
| 5 | Toyota Corolla Hybrid | 47 | $1,300 |
Source: EPA/DOE FuelEconomy.gov, 2023–2027 model years. Every top spot is a hybrid — they use roughly 30–60% less fuel than the equivalent gas-only model. See the full most fuel-efficient cars ranking.
Most efficient EVs (by MPGe)
| Rank | EV | MPGe | EPA range | EPA energy/yr |
|---|---|---|---|---|
| 1 | Tesla Model Y | 138 | 321 mi | $550 |
| 2 | Tesla Model 3 | 137 | 363 mi | $550 |
| 3 | Tesla Model S | 124 | 410 mi | $600 |
| 4 | Hyundai Ioniq 6 | 121 | 316 mi | $650 |
| 5 | Chevrolet Bolt EUV | 115 | 247 mi | $650 |
The most efficient EVs cost about $550 a year to charge on the EPA basis — roughly half what the thriftiest hybrid spends on gas. See the full best EVs ranking.
Efficiency vs running cost
Higher efficiency almost always means a lower fuel bill, but the cheapest cars to run overall are EVs, because electricity costs less per mile than gasoline. Want the absolute lowest annual cost? Check cheapest cars to run or model your own numbers with the fuel-cost calculator.