27 MPG combined won’t set any records, but in the 2018 BMW 320i xDrive, it’s a calculated trade-off. Buyers of this entry-level BMW aren’t only focused on maximizing fuel efficiency; they prioritize the driving experience and all-weather confidence that comes with the brand and the xDrive all-wheel-drive system. The 320i offers BMW performance and prestige at a relatively accessible price, and its fuel economy reflects that balance.

City and highway performance

The 2018 BMW 320i xDrive gets an EPA-estimated 23 MPG in the city and 34 MPG on the highway. The city figure reflects the demands of stop-and-go traffic, where the 2.0L turbocharged four-cylinder engine and eight-speed automatic transmission provide adequate acceleration. The highway figure is more respectable, showcasing the engine’s efficiency at steady speeds. While not class-leading, the highway MPG is enough for comfortable and relatively economical long-distance travel.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 BMW 320i xDrive at $2,150. This figure is calculated based on driving 15,000 miles per year, with 45% of those miles driven in the city and 55% on the highway, using national average fuel prices. This cost provides a benchmark to understand the ongoing expense of owning and operating this model. Remember that your actual fuel costs will vary depending on your driving habits and local fuel prices. Check average fuel prices for your area and consider that the price of premium fuel, typically recommended for optimal performance in BMW engines, will also impact your annual fuel costs.

Real-world expectations

EPA estimates provide a baseline, but real-world fuel economy for the 2018 BMW 320i xDrive can change depending on driving style, traffic conditions, and even the season. Expect slightly lower MPG figures during colder months, when the engine requires more fuel to reach operating temperature and winter tires may increase rolling resistance. More aggressive driving, including frequent acceleration and higher speeds, will also reduce fuel efficiency. Gentle acceleration, anticipating traffic flow, and maintaining consistent speeds are key to figures closer to the EPA estimates. Owners reporting their MPG figures say they are typically within 10% of the EPA ratings.

How it compares

Within the compact luxury sedan segment, the 2018 BMW 320i xDrive’s fuel economy is in the middle of the pack. A 2018 Audi A4 quattro, with its similar 2.0L turbocharged engine, achieves roughly the same combined MPG but may offer slightly better highway fuel economy in some configurations. A Lexus IS 300 AWD, known for its reliability, typically achieves a lower combined MPG of around 22 MPG. For buyers prioritizing fuel economy above all else, the Acura ILX can achieve a superior highway MPG of 35 MPG. Note that these are different vehicles with distinct priorities, the Acura ILX with high MPG and the 320I MPG across all years offering balanced performance and AWD.

Tips to maximize efficiency

Minimize idling. The 2.0L turbocharged engine in the 320i xDrive consumes fuel even when stationary; if you anticipate waiting for more than a minute, turn off the engine to conserve fuel.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, requiring the engine to work harder and reducing fuel economy. Regularly check and maintain the tire pressure recommended on the door placard.

Use cruise control on the highway. Maintaining a consistent speed on long stretches of highway minimizes unnecessary acceleration and deceleration, optimizing fuel consumption; use the 320i’s cruise control system when possible.

Avoid aggressive driving. Rapid acceleration and hard braking consume significantly more fuel than smooth, gradual inputs. Anticipating traffic flow and maintaining a steady pace will improve your fuel economy.

Consider the driving mode. The 320i xDrive probably includes driving modes that prioritize less gas, such as “Eco Pro.” Experiment to find the best mode for your driving style and requirements. Refer to all Bmw fuel economy data to compare other engines