First of all, I've been extremely happy with my 2011 Mazda 3 GX. I bought her brand new last June and she's been my precious baby since that fateful day. It's an automatic stock GX and I've clocked in just over 12,000KM over the past 12 months.
However, I have some gripes about the fuel economy. I've noticed almost everyone with the same model and trim has been getting better mileage than me. I started tracking my fill-ups a month ago and so far my best rating has been 9.0—I got 498km on a single tank. I don't floor the gas, I don't idle, I never use AC, and I coast whenever possible; so I know my driving habits aren't the problem.
Right now it looks like I'll get just over 500km on a single tank for the first time, so it seems it's getting better, but still nowhere near what other drivers are reporting.
Anyone else a bit disappointed with the fuel economy on the 2011 models? I know the Mazda 3 is not a crummy sub-compact and it's actually fun to drive compared to other cars in its class, but as a recent graduate I wish I could get more mileage out of each fill-up.
My Fuelly profile in case you're wondering: https://www.fuelly.com/driver/captainmazda/3