Dodge Neon SRT-4
Introduced in 2003, the Neon SRT4 was one of the best and cheapest performance cars in America at the time. The compact Neon was turned into a pocket rocket with a 2.4-liter turbocharged four-cylinder with 230 HP, which propelled the Neon from 0 to 60 mph in 5.4 seconds (via Car and Driver).
Of course, almost every owner tuned their Neon SRT4 the exact minute it left the dealership, and some owners even managed to squeeze over 400 HP from the 2.4-liter engine.