2012 Jetta 2.5 6 speed auto. After 5 months, around town 24mpg-ish. Mixed driving around 28-29ish.
Unfortunately, don't do a lot of highway driving, if I was averaging 50 mph on a long run my gas mileage would be really good maybe up at 32mpg+.
I've taken to using cruise as much as I can since it seems to regulate my gas mileage better than my right foot does.
If you're < 20mpg I would get a scan done at the dealership or somebody with a Vagcom locally. You may be running rich for whatever reason.
I should also say that I'm in Florida and my air is on most of the time. That seems to cost me about 15-20% fuel efficiency.
You might check the basics first - clean air filter, check the spark plugs, oil change if due etc.,
Interesting comment about the parking brake above.
Last edited by AgGTI; 10-30-2012 at 02:41 PM.
Reason: add info