The 2026 Kia Niro continues its reign as the most fuel-efficient gasoline-powered SUV, delivering an impressive 53 MPG combined. With EPA-certified ratings of 53 mpg city and 54 mpg highway, the Niro outperforms competitors in its class. This mild-hybrid SUV achieves these numbers through its 1.6-liter 4-cylinder engine paired with a full parallel hybrid system.

Kia's fuel-sipping SUV produces 139 horsepower and 195 lb-ft of torque while offering over 580 miles of range on a single 11.1-gallon tank. The 2026 model sees minimal changes from its predecessor, with Kia discontinuing the plug-in hybrid variant in the U.S. market. Pricing starts at $27,390 for the LX trim and reaches $35,790 for the top-tier SX Touring model.

While the Niro dominates its category, other efficient options exist for buyers seeking alternatives. The 2026 Toyota Corolla Cross Hybrid and Kia Sportage Hybrid both achieve 42 MPG, followed by the Honda CR-V FWD and Lexus NX 350h at 40 MPG. The Ford Escape AWD HEV rounds out the top five with 39 MPG. These figures represent significant improvements from previous generations, reflecting the industry's shift toward hybrid powertrains and enhanced internal combustion engines.