The real question you've got to ask is ....is it within your budget. If so it's never too soon to do a trade. Besides you are talking about a very different and new model compared to what was available when you bought your 02' model. It will definitely be a step up in power AND comfort. I've chastised some people that were trading in 05' cars for another 05'...because that is just plain stupidity. They either didn't do their research (I mean come on it's not like you didn't know about the OTHER 05' models) and/or are just prone to impulse buying which car dealers LOVE. If you don't mind the price tag on the new Legacies (including increased insurance, taxes and fuel costs, they are gas hogs)....if you've got the means....by all means....do it.