08-16-08, 06:15 PM
I recently bought a used cadillac SRX for my wife and it is some car. I'm thinking about getting a used STS for myself and found some great deals on 2005's but the 2006's are a decent amount higher. Anyhow, I am thinking of getting a RWD 3.6L and when I look up the car on edmunds it says there is no change from 05 to 06. but on government fuel econ site the 2006 is listed as getting significantly better gas mileage. Is there any change to the 3.6 between 2005 and 2006.