Similar to the Rio from Hyundai's Kia group, the Hyundai Accent is one of most affordable cars on the road, with base prices starting at $9,970 and the top range topping out less than $17,000. The Rio has an impressive 92.2 total cubic feet of passenger room, defying the myth of small cars' cramped cabins. Fuel economy is also impressive, averaging 28 mpg in the city and 34 mpg on the highway.