3-Series (E21, E30)Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.
I have a 88 325is that has been running fine it seems except for the fact that i am getting 15-16 mpg. Is this normal (all the driving is city driving)? The car is old enough that I can understand it not running at optimal levels, however 15-16 seems to low. I think I saw some other people with the same cars posting 18 or 20 in the city? Is there anything I can look at home to try to improve the gas mileage? It appears to be running to rich, the exhaust pipes are quite black. Thanks for any help or advice...
i was having the same problem, and for the most part, my driving habits were to blame. i dont do driving in the "city", but i run into a lot of stop-and-go. i was probably getting about 16 mpg last week. so last weekend i took my car to the mechanic and had my filters changed, oil changed, and had the fuel injectors cleaned.
i couldnt really tell any difference in performance, but i started using premium gasoline, and i started driving more conservatively, and now i get about 24 mpg. which is quite a jump, but there is a huge difference in the way i drive now, i actually go the speed limit, and when im going 35-40 mph, i usually just cruise with the car in 5th gear
id try looking under the hood and seeing what needs to be cleaned/maintained. hope this helps
<span style='font-family:Arial'><span style='font-size:14pt;line-height:100%'>T-Mac</span>
95' BMW 325is Jet Black, 5 speed
Xtec 6000k HID kit, DDE Enhanced, Euro Ellipsoids, M3 Front Bumper, Color-matched rear,
Alpine Mp3/CD, 20% tint, M3 Contour Rims, Smoked Corners, front lip
Clear Side markers, K&N Performance Filter, Debaffle, Color-matched side skirts</span>
I'm not really sure if my driving habits are to blame but I will take that into consideration. Usually when i am going 40 i am in 4th or 5th gear like you said. I often put the clutch in and glide to save gas. I am hoping that the mileage is mostly due to the stop-and-go driving. the rubber connector from the air intake to the engine manifold (dont know what it is called exactly) has some cracks in it that could let air in, so I am going to look into that...
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