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Sedans BMW 3-Series BMW 3-Series Real World MPG
74 messages, Last post on Nov 16, 2008 at 8:48 AM
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Hi. I just purchased a 2000 328ci and the on-board computer is telling me I'm getting 5.9MPG. I know this isn't so just from driving it, but why would it be telling me this? Does it need to be reset? And how accurate are the on-board stats?
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Replying to: angecs29 (Dec 04, 2007 4:55 am) It could have been reset and then just driven around the dealer's lot. Does it need to be reset? Yes. And how accurate are the on-board stats? The actual fuel economy is  95% of the average OBC economy.
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Ok since I posted about 8 months on this site about my gas mileage of 15-16 mpg on my 2007 328i, my mileage improved to 19 mpg! And that is with 90% stop-and-go city LA traffic. I am very happy about it. Actually the mileage suddenly became better after about 6,000 miles. My new problem is for the last month, my fuel gauge has been acting crazy. I would fill a tank of gas, and it would show accurate reading, and then, after about half-a-tank is gone, the gauge would just go to Zero or even less than Zero and it would indicate that I am out of gas! I ran to the gas station just to find out that I really have plenty of gas left and it is just a false reading. But it's been doing it lately. What could be the problem?
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Replying to: absolutic (Dec 04, 2007 9:28 am) The E36(1992-1999) 3 Series cars had a similar issue. In that case the problem was caused by corrosion deposits on the fuel sending unit contacts within the gas tank. BMW cured the problem by introducing a replacement unit fitted with gold contacts that do not corrode. I solved the problem on my 1995 and 1998 3ers by using only Top Tier gasolines- which contain detergent properties that prevent the deposits from occuring. That said, since your car is still under warranty I'd simply return it to the dealer. If you want to attempt an interim fix, you could try adding a bottle of Techron to your fuel; it can't hurt and it may fix the problem temporarily.
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2006 330i, non-sport. Put on nearly 11,000 miles in 2007 and averaged 24.34mpg in a mixture of roughly 2/3 highway 1/3 city driving. Best tank (mostly highway) returned 27.31mpg. Worst tank (mostly city) returned 21.17mpg. Use sports mode frequently in city driving. No question in my mind this car would get low 30s on a highway trip, and not just in the right lane at 55mph. I've seen what it's capable of on highway drives of 30 to 60 miles, at 70-80mph. I always have my on-board computer set to display the mpg. Quite pleased getting this kind of gas mileage from a sports sedan. The G35 I had before it averaged about 22mpg. |
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Replying to: davidd3 (Dec 27, 2007 8:10 am) |
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Replying to: roadburner (Dec 04, 2007 11:27 am) |
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Replying to: davidd3 (Dec 27, 2007 8:10 am) I assume with new EPA testing rules come around 2009, we are going to see more realistic figures. Hopefully, they will take cars off treadmills to an outside environment this time
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I drive a 2007 328xi. 60% hiway 40% hilly country roads in CT with a few stop lights. I average consistently 22MPG on 93 octane. This has been true from my third tank of gas. In cold weather I may get 1 or 2MPG worse. I am not lead footed. On the hiway over 100+ miles without stops I can get as much as 27MPG at 70-75MPH (by BMW speedo which we all know reads 4-5MPH fast at this speed). This seems to be consistent with others. Idoc |
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Replying to: absolutic (Dec 27, 2007 8:59 am) Correct me if I'm wrong, however, I believe that the new EPA mileage ratings went into effect for the 2008 model year. http://www.epa.gov/fueleconomy/ Best Regards, Shipo |
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