Bad Fuel Economy - 2013 328i

Originally Posted by AndyFisher

Has anyone actually gone to the dealer and had the ASS turned off by default on their 2013 328i?
Is this actually something a dealer/service dept can do easily?

Yes, your dealer should be able to easily recode the car so the default setting leaves ASS off. I saw many people on this forum posting that they had it done.

Originally Posted by lqaddict

The EPA numbers are for an ideal driving environment that most of us are not subject to.

Far from it. The test schedules include cold and hot starts, a great deal of acceleration, braking, etc. This is why many can easily beat EPA estimates, especially in freeway cruising.

EPA Test Schedules

Originally Posted by Elk

Far from it. The test schedules include cold and hot starts, a great deal of acceleration, braking, etc. This is why many can easily beat EPA estimates, especially in freeway cruising.

EPA Test Schedules

The weighting on those extreme cycles is lower than you may expect.

http://www.edmunds.com/car-news/here...pa-rating.html

Originally Posted by samualcc

These posts come up a lot. Before freaking out, take your car out onto the high way. Turn on the cruise control and set it to 65mph. Reset the trip computer and drive about 50 miles. See what your results are.

If they are still terrible, then there is a chance it is the car, but 99.99% of the time, it is how you drive and were you drive. Short 10 minute trips are terrible for mileage. We had someone a month ago complaining and swearing his car was broken because he was getting 16 mpg on this new 328i. Turns out he drove 5 miles to work and sits in traffic for 30 minutes on the way

I drive 5 miles to work in LA and do not sit in trafffic. Its 10-15 mins and literally a handful of lights and a few stop sign and average 16mpg. His car must be more efficient than mine. But im not complaining. 16 is better than 12. Havent even been able to reach ONE trip that averaged me 30mpg. But 27 is super green hybridish to me. Lol.

Originally Posted by FrogmanF30

For me (in LA), I've had ASS kick in immediately after cold starting it (200 yards to my stop sign), I don't think it gets cold enough here for ASS to be disabled due to ambient temperature and I don't think it cares about engine temp too much.

It seems to take 10-15 minutes to get the oil temp up to normal. If all you are going is 10 mile trips, you car is never getting fully warm and stabilized.

Take your car out on the open road and let it breath properly as suggested and see what it will do MPG wise.

Yeah andy fisher. Come to the track and let it breathe. You wont complain about your 16mpg after that session lol.

Originally Posted by AndyFisher

Seems pretty crappy if the actual real world use of the car is 8-10 mpg below what the "EPA Estimate" is...
One of the main selling points of the new 2013 328i was its improved "best in class" fuel economy.

It sounds like people are mixed on how their own 328i's are doing with fuel economy.
But I can't imagine that our driving styles are THAT different.

There are many different driving styles!! You know the guy who is pissed and honks at everyone and tries to go fast in traffic by swerving in and out of traffic? (Im not that guy). Or the guy who quietly finds his way quickly through traffic? Or (dreaded) the dude who is causing traffic by going extra slow. Or the (even worse) guy causing traffic IN traffic?! Ha.