i'm thinking about buying one of these... i'm not exactly car savvy.... can someone tell me about them? i read the gas mileage is good... and that AWD is standard... is this the case? or do they say the mileage is good but every little thing drains it? i saw one car that said "4wd is on all the time" ... isn't that bad?

i'm not looking to off road it or anything... i just want a bigger vehicle than i have now but the environment and my wallet are in enough trouble without adding another gas guzzler to the road... so the rav4 seemed like a good match. i drive 5 mins back and forth to the train station every day and occasionally the grocery store. on teh weekend i do more highway driving, taking trips and stuff.

any opinions or thoughts?