Most fuel-efficient cars of 2026

Vehicles ranked by EPA combined MPG (gas and hybrid).

Data-driven ranking · Rankings computed September 18, 2026 · Listing counts refresh daily

What are the most fuel-efficient cars? The 2026 Toyota Prius ranks #1, followed by the 2026 Hyundai Elantra and the 2026 Kia Niro.

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Most fuel-efficient cars FAQ

What are the most fuel-efficient cars?
OpenDealer ranks the following as the most fuel-efficient cars for 2026: Toyota Prius, Hyundai Elantra, Kia Niro, Toyota Camry, Hyundai Sonata.
How much do the most fuel-efficient cars cost?
Starting MSRPs in this ranking range from $22,725 to $49,700, depending on trim and configuration.
What is the cheapest vehicle in the most fuel-efficient cars list?
The 2026 Toyota Corolla has the lowest starting MSRP in this ranking at $22,725.
How does OpenDealer rank vehicles?
Ranked by EPA combined fuel economy, with ties broken by the OpenDealer composite score (safety, efficiency, value, popularity, availability). All inputs are from public data sources; no paid placement.

How this ranking works

Ranked by EPA combined fuel economy, with ties broken by the OpenDealer composite score (safety, efficiency, value, popularity, availability). All inputs are from public data sources; no paid placement.

Rank order and scores are computed from public data (NHTSA, EPA, manufacturer pricing, 2025 US sales figures) and inventory availability at snapshot time, then frozen for six months. OpenDealer listing counts and shop links refresh daily. Dealers cannot pay to influence placement. Rankings last computed September 18, 2026.

US sales data courtesy of GoodCarBadCar.net.