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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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| The 328i manual that I drive sporadically usually gets around 22-23 mpg in the city if driven carefully. When I drive with a bit more enthusiasm, it drops to about 17-19 mpg. On the highway, it generally sits around 30; however the best tank so far has been 32mpg. | |
| For a long time the mpg feature of my BMW's on board computer was quite accurate, varying from actual mpg by no more than 0.25mpg. Now, 2.5 years later, I'm noticing it regularly indicates an mpg which is off (always too high) by 0.5mpg to 0.75mpg. This is my first car with this feature. Are these things just not too accurate or is mine off enough to have it checked out on the next visit to the service center? | |
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Replying to: davidd3 (Mar 24, 2008 5:51 pm)
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Replying to: fedlawman (Mar 24, 2008 7:08 pm) Nope, that's not it. The car is only 2.5 years old and I've been doing the winter tire/wheel package changeover thing. Neither set is worn down (though I have a cupping problem with the OEM tires and I'm going to run the winter tires longer this year, perhaps until near the end of my 3 year lease). |
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I check mpg by hand too, on a regular basis. I was just wondering how accurate the readings from the car are. It seems that your experience has been the same as mine in that the readings from the car are a bit optimisitic. You certainly are getting good gas mileage for a V8. I think that BMWs have remarkable fuel efficiency for such powerful engines. I'm getting 24.5mpg overall from my 330i; that's roughly 60% highway, 40% local. I came out of a G35, which got about 22mpg with the same driving.
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Replying to: davidd3 (Mar 25, 2008 12:50 pm)  As I said before, I found the same thing as you with my 545i. The car's readout was always a bit too optimistic. After I found that out, I started keeping the mpg stats. by hand. I keep a pocket calculator in the glove compartment for that purpose. After the first year, I became less enthusiastic about "keeping score". From the chart I kept by hand, I averaged about 21 mpg over 9000 miles with 70% highway, 30% local errands. Pretty impressive for a powerful V-8, IMO. I'm sure the mpg would have been closer to 21.5 or so, using the car's readout. I guess BMW wants us to believe our mpg is better than it really is so we keep coming back for new BMW's! 
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| Mine is indicating 27.3 mpg over the past several thousand miles, about 60/40 highway/urban with the occasional 150 mile trip. | |
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On board computer has calculated 28.3 to 28.5 over 46,000 miles 90/10 highway/urban. I commute 90 miles round trip daily. Manual calculation thru the first 20K was 27.9 to 28.3. Regards, Kirk |
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| Our 2006 325i Convertible with automatic transmission got 29.4mpg from Sarasota to mid-MI a few weeks ago. A 2 day trip running 70-80 mph most of the way fairly frequent food and rest stops. | |
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