That depends on what you value most. The Prius does hold a real fuel-economy lead — EPA-rated as high as 57 MPG combined on FWD trims versus the Niro's 53-54 MPG combined — and it's earned an IIHS Top Safety Pick+ award the Niro hasn't received. On the other side, the Niro brings Kia's 10-year/100,000-mile powertrain warranty (Toyota's basic powertrain term is 5 years/60,000 miles), a price tag about $1,160 lower, and more cargo space in most trims (22.8 cubic feet versus 20.3). If mileage is the only thing you care about, the Prius wins hands down. If you're weighing overall value and warranty depth, the Niro comes out ahead.

No question, it's the Prius. Toyota rates the 2026 model at up to 57 MPG combined for front-wheel-drive versions (54 MPG combined with AWD), while the Kia Niro is EPA-rated at 53 city / 54 highway / 53 combined on the LX, EX, and SX trims (dropping to 49 combined on the SX Touring's bigger wheels). Horsepower tells a similar story — the Prius's hybrid system makes 194-196 hp against the Niro's 139. Even so, the Niro remains a solidly fuel-efficient choice in its class; it simply isn't the mileage leader in this pairing.

No, not for the majority of trims. The Niro offers 22.8 cubic feet of cargo capacity, whereas the Prius provides 20.3 cubic feet behind its rear seats on the XLE, Nightshade, and Limited trims (the entry-level Prius LE climbs to 23.8 cubic feet, since it carries less sound insulation). Because the Niro sits taller as a crossover, it's also easier to load than the Prius's lower liftback body.

Yes, at the entry level. The 2026 Niro LX starts at $27,390 MSRP, while the Prius LE runs about $28,550 (neither figure includes destination) — roughly a $1,160 difference favoring the Niro. Both models offer four trims: the Niro spans LX to SX Touring, and the Prius spans LE to Limited.

Kia simply protects the most expensive component for a longer stretch. The Niro's powertrain warranty covers 10 years/100,000 miles, while Toyota's powertrain term runs 5 years/60,000 miles (though Toyota separately covers the hybrid battery for 10 years/150,000 miles). On the powertrain warranty that covers the engine and transmission, the Niro's decade of coverage stays out front.

Fair's fair: the Prius delivers class-leading fuel economy (up to 57 MPG combined), an IIHS Top Safety Pick+ award and 5-star NHTSA overall rating the Niro hasn't matched, a larger available 12.3-inch touchscreen, and an AWD option the Niro doesn't have at all. If MPG, crash-test awards, or all-wheel drive are must-haves for you, the Prius deserves a serious look. If warranty coverage, starting price, and cargo space matter more, the Niro takes the win.

You'll find Dean McCrary Kia at 7124 US Hwy 98 in Hattiesburg, right at the junction of I-59, US-49, US-98, and US-11, carrying the complete Niro Hybrid lineup for shoppers throughout the Pine Belt — including Petal, Oak Grove, Purvis, Columbia, Laurel, and surrounding areas. Come by and experience the difference firsthand.