anything i need to watch out for? Not looking to spend more than 20k, should i go for year or miles, and what are the service intervals?

I heard that every 30k miles, i have to get a $900-$1100 tuneup.

I have to tell you, i'm in love with the GS. If I won 100 million in the lottery, out of the 5 vehicles i'd buy, 2 would be GS.

Final question: The EPA website says there is only a single mpg difference between the 300 and 400 for city driving, and no difference for highway driving. Is this accurate?

Check out .........

Don't advertise other sites here. If you have a specific reference on that site that answers his question, give it.