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Re: What is average MPG on 91 E34 M5? (archive)
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Posted by GerryM5 on February 14, 2001 at 16:12:02:

In Reply to: Re: What is average MPG on 91 E34 M5? posted by Donald Smith on February 13, 2001 at 19:08:45:


Yeah, that does seem normal. I average just about the same, 14mpg city/24mpg highway in my '92 M5. Overall I get 17mpg.


A few months ago I bought a 91 E34 M5 with B@B Tri-Flo exhaust and Dinan chip/suspension. I am getting around 13.5 MPG!?!?! Is this unusaul? I put Techron and Heet in the gas tank, but the improvement was only 3/10 mile. Anything else I can do?

Any advise is appreciated

That is normal for city driving. On the highway (75 mph) you should get about 23mpg.

Owned mine since 91. 15 MPG city/ 22-23 MPG HW @ 75-85 MPH.





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