I think the E39 M5 proves that 400 hp for a 4,000lb sedan is the sweet spot as long as it’s an engaging car to drive. BMW has never topped the E39. For a 3,000lb sports car, the NSX and S2000 show us that 250-300 hp is plenty to have a lot of fun with. Once you get to 300 hp in a sports car, you have enough power for the car to feel fast. It really comes down to the handling, steering, braking, and overall feel.
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