Why does the Honda Civic Si have such a high resale value?

What is so good about those cars? I mean, I have seen very very few of them when I drive around. I guess they aren't as popular, but yet they are expensive for later models? I really don't know…

I have had mine for 14 yrs, i have only replaced tires, batter and windshield wipers

Because they are super-reliable Hondas. People buy them BECAUSE they maintain high resale and trade values, which lowers their cost of ownership.

Dependability, fun to drive, and they are they are quick. For example a 2006 Honda Civic EX has 140 h.p. & 128 ft/lbs of torque whereas a 2006 Honda Civic Si has 197 h.p and 139 lb/ft of torque. That extra 57 h.p. Makes a world of difference in how the car performs. The Si stands for Sport Injected. The Si also has a limited slip differential, sport tuned suspension, and better brakes, better sound system, and more options. All in all it is a sportier and nicer car to drive. It is basically a little factory hot rod. They were expensive when new and that is why you see very few on the used car market. They also hold their value extremely well.

They are reliable and cheap to maintain. And the market values them perhaps excessively.