Monthsin Fleet: 14 months Final Mileage: 41,208 miles Average Fuel Economy: 35 mpg Fuel Tank Size: 15.0 gal Fuel Range: 525 miles Service: $0 Normal Wear: $0 Repair: $0 Damage and Destruction: $0
152posts · Joined 2007. #29 · Nov 20, 2007. I have a 335i manual with 3600 miles on the odometer and I get crappy mileage in town as well. I average about 15 with an average speed of about 20 mph. My brother has a Steptronic 335i and he swears that he gets 19-20 in city driving but he lives in a less congested area. Thats the way to do a mpg test. Go on the freeway about 11 PM when traffic is light, reset the mpg indicator and drive for about 20 minutes at a steady speed-say 75 mph. You should observe the mpg indicator at mid to high 20's. If it is, there is nothing wrong with the car. Ihave a 2011 328i and although BMW recommends using 91 octane fuel, I was considering trying 87 or 89 octane fuel. did you notice any knocking/pinging, decrease in performance or reduction in gas mileage as a result? dcutler1, Sep 7, 2012 #1. Member charlson89. 2015 Black Sapphire Metallic F30 335i standard - Wife DD. Seepricing for the Used 2015 BMW 3 Series 328i Sedan 4D. Get KBB Fair Purchase Price, MSRP, and dealer invoice price for the 2015 BMW 3 Series 328i Sedan 4D. Fuel Economy. City 23/Hwy 35/Comb Costto Fill the Tank. $71. Tank Size. 16.1 gallons. *Based on 45% highway, 55% city driving, 15,000 annual miles and current fuel prices. Personalize. MSRP and tank size data provided by Edmunds.com, Inc. Range on a tank and refueling costs assume 100% of fuel in tank will be used before refueling. 2011 BMW 328i. J6429.