2021 BMW X3 Gas Mileage. Fuel economy ratings for the X3 vary dramatically. They’re excellent for the sDrive30i and poor for the X3 M model. The hybrid xDrive30e has a 17-mile all-electric driving range. sDrive30i: 25/29 mpg city/highway; xDrive30i: 23/29 mpg; xDrive30e: 60 MPG-equivalent combined (electric mode) and 24 mpg combined (hybrid mode) BMW X3. 2005 BMW X3 3.0 D Added Oct 2018 • 4 Fuel-ups. A simple & effecive way to track fuel consumption Easy to understand the real cost of your vehicle. We can help you calculate and track your fuel economy. MPG Estimates from Others; 2007 BMW X3 3.0si Personalize Find a car: 6 cyl, 3.0 L, Manual 6-spd Highway MPG: 23. highway. 5.6 gals/ 100 miles. 2006 BMW X3 6 cyl, 3.0 L, Automatic (S5) Premium Gasoline. Not Available. Highway MPG: 28. highway. 4.2 gals/ 100 miles. 2017 BMW X3 xDrive35i 6 cyl, 3.0 L, Automatic (S8) Premium Gasoline. Not Available. Since, mid august that has changed to 375-380 miles. 2007 BMW 328i - 6 Speed Manual. 2009 BMW 135i - 6 Speed Manual: 5" VRSF FMIC, VRSF Downpipes, Berk Axle Back (muffler delete), ARM Charge Pipe with 50mm TiAL, DCI, and JB4 w/ Bluetooth: Map 5 & BEF flash race tune. Save. 2013 BMW X3 xDrive28i Vehicle type: front-engine, 4-wheel-drive, 5-passenger, 5-door wagon. PRICE AS TESTED FUEL ECONOMY EPA city/highway driving: 21/28 mpg C/D observed: 23 mpg. The unique combination of the intelligent 4-wheel drive system BMW xDrive and state-of-the-art BMW eDrive technology reduces average fuel consumption to levels between 2.4 and 2.1 litres per 100 X3. 2008 BMW X3 2.0 d Added Sep 2016 • 139 Fuel-ups. A simple & effecive way to track fuel consumption Easy to understand the real cost of your vehicle. Fuel consumption (economy) - urban : 10.3 l/100 km 22.84 US mpg 27.43 UK mpg 9.71 km/l: Fuel consumption (economy) - extra urban: 6.5 l/100 km 36.19 US mpg 43.46 UK mpg 15.38 km/l: Fuel consumption (economy) - combined: 7.9 l/100 km 29.77 US mpg 35.76 UK mpg 12.66 km/l: CO 2 emissions: 210 g/km : Fuel Type : Diesel : Acceleration 0 - 100 km/h Tb9i.