What affects your MPG?

[sasha055]

Hi,
What is the average MPG are you getting in mixed mode driving.. I read on forums that people get 20-22mpg... I barely get 17mpg (60% back roads, 30% highway) and I don't drive very aggresive. and I have a 2000 base 2.7L manual transmission.

Since it's lower then what I read here.. something must be wrong..
I changed spark plugs/tubes, battery has 1year, MAF is 3yo (it's 125...01 version), new engine oil (syntec 10w40), tires are aligned/balanced with 70% thread remaining.
Engine is smooth as silk.. and I usually try to keep above 2500RPM but rarely go over 4-4500 RPM

So what else could affect my mpg?

Thanks
Sasha