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BMW 3-Series Fuel Economy (L/100km)

L/100km Number of Vehicles
5 liters per 100 kilometers 8 vehicles
6 liters per 100 kilometers 26 vehicles
7 liters per 100 kilometers 135 vehicles
8 liters per 100 kilometers 66 vehicles
9 liters per 100 kilometers 47 vehicles
10 liters per 100 kilometers 24 vehicles
11 liters per 100 kilometers 10 vehicles
12 liters per 100 kilometers 4 vehicles
13 liters per 100 kilometers 0 vehicles
14 liters per 100 kilometers 1 vehicles
15 liters per 100 kilometers 1 vehicles
16 liters per 100 kilometers 0 vehicles
17 liters per 100 kilometers 1 vehicles
Model Year Body/Powertrain L/100km  
2014 2014 4dr Sedan turbocharged 240hp 2.0L I4 8-sp shiftable automatic AWD 9.1
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With the turbocharged 179kW 2.0L I4 engine, 8-speed shiftable automatic transmission, and all-wheel drive, the 2014 BMW 3-Series has been averaging 9.1 L/100km (liters per 100 kilometers).

The 2014 BMW 3-Series in this analysis were driven mostly in the city (about 9 percent of the kilometers driven). The rest of the kilometers were on the highway at an average speed of 69 kilometers per hour (4 percent), in the suburbs (0 percent), and in heavy traffic (0 percent).

In addition, the average 2014 BMW 3-Series in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
2014 2014 4dr Sedan turbocharged 240hp 2.0L I4 6-sp manual RWD 7.97
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2014 2014 4dr Sedan turbocharged 180hp 2.0L I4 Diesel 8-sp shiftable automatic RWD 5.58
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2014 2014 4dr Wagon turbocharged 240hp 2.0L I4 8-sp shiftable automatic AWD 10.6
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TrueDelta Reviews the Real Gas Mileage of the 2014 BMW 3-Series

2014 BMW 3-Series Real Gas Mileage: Pros
YearComment
2014 Both the tested BMW 328d and the tested Mercedes-Benz E250 BlueTEC were fitted with optional all-wheel-drive (AWD) systems. This cost them an mpg or two, but kept the playing field level. The more compact BMW weighs much less, 3,620 vs. 4,409 pounds, and has an engine tuned to produce considerably less peak torque (280 vs. 369 lb-ft) and a bit less peak horsepower (180 vs. 195), so it shouldn't come as much of a surprise that it earns a significantly higher EPA city rating, 31 vs. 27 mpg. But on the highway the Benz nearly bridges the gap, 43 vs. 42 mpg. (All figures here with AWD. With rear-wheel-drive the cars rate 32/45 and 28/45.) Diesel enthusiasts argue that the EPA's testing regimen penalizes the compression-ignition engines, and that real world figures tend to be higher. Unfortunately, I drove the two cars on much different roads under much different conditions. In straight 65-mph highway driving in balmy temps, the Mercedes-Benz's trip computer reported averages in the low 40s, very close to the EPA rating. On a fairly aggressive drive in the hills south of San Francisco, this average dropped to 28, which is still better than the EPA city rating. And on a cruise along one of the less curvy portions of the California coastal highway it managed a two-way average around 39. Not too shabby for such a heavy car. I drove the BMW 328d in suburban Detroit during some especially cold weather (thank you, polar vertex), which harms fuel economy. Even so, with a fairly heavy foot and a cold start it managed 33 mpg while driving my son the eight miles to his school. On the way back, with a lighter right foot and a warm engine, it managed 44. The highest observed average was 49. At a steady 65 miles-per-hour on the highway the trip computer reported just under 40 mpg. Correct for the much colder temperature, and this is at least as good as the Mercedes, but a much tighter race than in around-town driving. My initial impression was that the 328d's trip computer reports weren't much better than the gas-powered 328i's surprisingly good numbers. Then I checked my review. Even though the 328i wasn't penalized by all-wheel-drive, and the ambient temperature wasn't quite as low, its averages were between two-thirds (moderately heavy foot) and four-fifths (ultra-light foot) as high as the 328d's. Overall, figure three-quarters as efficient, at best. Impressive for a quick, gas-powered car, but no match for the diesel, even considering that diesel tends to cost more than premium gasoline (this varies by local area). see full BMW 3-Series review
 

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2014 BMW 3-Series Gas Mileage (L/100km)

Unlike other fuel economy surveys, TrueDelta's Real-World Gas Mileage Survey includes questions about how and where a car was driven. So you can get an idea of the BMW 3-Series's real-world L/100km based on how and where you drive a car.