Why does farming equipment require such low horsepower compared to your average car?

Question

Why does farming equipment require such low horsepower compared to your average car?

In: 114

Answer 1

You can do a lot with less horsepower if your gearing is low enough.

But

All the gearing in the world won’t make you go faster once air resistance eats up all your power once you start moving over X mph (X being whatever speed all your engine’s power is used up just fighting the air resistance).