9: Honda Civic Type R

$121 per horsepower
Honda released this car in 2017 and used the platform from the 10th generation Civic. So, for this generation of type R, they just used the engine from the previous Civic. Pumping 306 horsepower and coming in at around $37 thousand dollars. When divided, that comes out to $121 per horsepower. A great deal for a fun, reliable, hatchback.