Well I am new to Mazda vehicles - used to drive a 2004 Saturn Ion that got totaled out. After a bit of research and test driving I found a nice sporty-looking Mazda6 that I must say I love! I purchased a used 2008 Mazda 6 i w/ the 2.3L I-4 engine. 46,980 miles at purchase. Has great horsepower for a I4 compared to some other I4 engines. Hoping to get at least 150k miles out of the engine - and from what I read I'm most likely to do that with the Mazda versus a Cobalt and/or underpowered Focus. I read that in theory the engine can get 500k miles with good maintenance, but 150-200k would make me very happy. I want to own this car for a good 6 to 10 years - maybe more! What are the average engine miles people are pulling out of the Mazda 6 on this forum?