basically, what Sir 'O said...cars like the Civic (etc) were always relatively light in terms of weight...it was more about the design of the vehicle (light weight can provide a more nimble feel, reduces fuel consumption and keeps the cost down)...sure, it won't have that "thud" that some of the larger cars offer, but buyers of these vehicles value doors that close with a "thud" far less than things like handling, fuel consumption and price...now, if it were a premium car, where price, fuel economy, etc is less important than "substance", quietness, "solid" road feel, the car is designed with those attributes as more important...if a (example) Mercedes 560SEL felt like a Civic, no one would buy it.