The 2011 BMW 328i has a 16.1-gallon capacity whether you choose the coupe, sedan, wagon, or convertible models.
The 2011 BMW 328i might be one of the most recognizable lines that BMW produced. Although the 328i line had been around since 2007, the 2011 models were more fuel-efficient and cleaner-running than ever.
While this means you don’t need to head to the gas station often, it is helpful to know how big the tank is when filling it up. Sure, your owner’s manual should list your model’s gas tank size, but don’t worry if you’ve misplaced it. Jerry
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How big is the gas tank on a 2011 BMW 328i?
Every vehicle in BMW’s 2011 328i lineup has a 16.1-gallon fuel tank. The tank is slightly bigger than the 2007’s 15.9-gallon fuel tank—and the 2011 lineup offers better fuel economy, so you should have more time between trips to the pump.
Although the base model, convertible, and sports wagon all run on regular gasoline, the 328i lineup includes a single diesel-powered engine. It’s got the best fuel economy, but the tank size is still 16.1 gallons—the same as every 2011 BMW 328i.
How to check your 2011 BMW 328i’s gas tank size
If you can’t remember your car’s tank capacity, or if you just want to double-check for yourself, there are a few ways you can figure out the size of your gas tank.
Measure the gas tank
Get a measuring tape and a calculator for a hands-on way to check the tank size. Measure the width, length, and height of the tank. Then, multiply those measurements and divide the result by 231 (that’s how many cubic inches are in one gallon).
Check your owner’s manual
If you’ve got your owner’s manual handy, check it out! Look in the index for “fuel tank capacity” or “gas tank size” to find the exact measurement.
Drive till empty, then fill it up
Another simple way to learn your gas tank size is to drive your BMW until the fuel gauge hits “E.” Then, fill it up and note how many gallons of gas you put in. You won’t get the most accurate measurement, but you’ll know roughly how big the tank is.
How to save on fuel costs in a 2011 BMW 328i
BMW recommends filling up your 2011 328i with premium gasoline. This gets your vehicle about 22 mpg combined city/highway. There are slight variations depending on the model:
Base model: 18 mpg city/28 mpg highway
Convertible: 17-18 mpg city/33 mpg highway
Sports wagon: 17-18 mpg city/26-27 mpg highway
Sports wagon xDrive: 17 mpg city/25 mpg highway
If you’re looking for the BMW 328i with the best fuel efficiency, look for the single diesel offering—a four-door automatic sedan with rear-wheel drive. This 328i diesel-powered BMW gets 23 mpg in the city and an impressive 36 mpg on the highway.
The BMW 328i has pretty good fuel economy, but here are a few tips that can save you money at the pump:
Follow your maintenance schedule. This means regular oil changes, rotating the tires, and following through if diagnostic codes pop up. When your car is running at its peak, it will use fuel more efficiently.
Drive thoughtfully. While it can be fun to feel the power of quick acceleration, ease up on the gas pedal to reduce your fuel consumption.
Don’t idle, especially in cold weather. When you idle, you’re burning gas for no reason. Instead of letting your car idle in the driveway on a chilly morning, drive your BMW slowly to warm it up.
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