My Eclipse is an RS with the 2 liter 420A engine, 5 speed, A/C, manual windows, and rear defroster. The 420A (2.0) non-turbo engine sounds good, performs excellent, and gets good mileage. Vehicle is cool looking and fun to drive. Make sure maintainence was performed every 30K mi including the timing belt at every 60K mi. Mine has been very reliable with minimal cost to operate.
I got my car just over 2 years ago,it had just over 113,000 miles on it.I now have 129,800 on it and it runs perfectly.I don't know why people say the millage is ok,I think its wonderful I'm getting 28 in town and 36 on the Highway.I also realized by adding a bit of methanol to the fuel I get another 5 miles to the gallon.
My 96 is as economic as any of these newer cars,and bigger too.And only has a 2.0 liter motor.The key to millage is a good cold air intake!Also a good Cat back exhaust system.