2. (Tie) Nissan Frontier/Suzuki Equator 2.5L 2WD: 21 mpg
The Nissan Frontier shares quite a lot with the Suzuki Equator, including it’s 2.5L four-cylinder engine. The frugal four achieves 19 mpg in the city, 23 mpg on the highway, and a combined 21 mpg which is good enough to make it into a three-way tie in this list. For $18,740 (for the Nissan Frontier) and $17,899 (For the Suzuki Equator) you get a 152 hp, 171lb-ft of torque go-getter.