My silver S2000 with red leather interior has been trouble free ever since I bought it in January of 2001. It has averaged very good gas mileage (for a sports car) and outstanding performance. When I took it to the beach last summer, it averaged 30 mpg over 500 miles of highway driving! The only complaint I have is with some minor vibration noises coming from the top and poor visibility through the plastic top window. Other than that, the car has been a joy to own.
The best features of the car include the six-speed manual, easy to use convertible top and its overall performance.
More low-end torque. Otherwise, don't change the car!