The horsepower of a 2000 Ford Mustang coupe varied significantly depending on the engine option. There wasn't a single horsepower figure. You'd need to know which engine was in the specific car. The options included:
* 3.8L V6: Around 190-200 horsepower
* 4.6L V8 (GT): Around 260 horsepower
So, the answer is either approximately 190-200 hp or approximately 260 hp, depending on the engine.