2025 Infiniti Qx80 Mpg Review. Research the 2025 infiniti qx80 at cars.com and find specs, pricing, mpg, safety data, photos, videos, reviews and local inventory. Finally, infiniti anticipates the new qx80 will get 13% better fuel economy than its predecessor, with a combined city/highway estimate of 18 mpg and 17 mpg on the rwd and awd trims,.

In consumer guide testing, our test 2025 infiniti qx80 returned a completely reasonable 18 mpg. The infiniti qx80 sees a significant change in its powertrain for the 2025 model year, as the prior v8 engine has been swapped out for a slightly more efficient v6 (i averaged 19 mpg in.