The 2015 BMW 328d xDrive gets 34 MPG combined, which isn’t going to win any hypermiling competitions, but it is a practical, diesel-powered sports sedan with all-wheel drive. This isn’t a car bought by those solely focused on squeezing every last mile from a gallon; it’s for drivers who value performance and handling but demand reasonable running costs and the security of xDrive. The 328d xDrive offered a unique blend of efficiency and driving enjoyment at the time, a niche that still holds appeal today.

City and highway performance

The EPA estimates pegged the 2015 328d xDrive at 31 MPG in the city and a more impressive 41 MPG on the highway. The city figure is respectable, but the highway MPG is where this diesel truly shines. That 41 MPG makes long road trips a breeze, vastly extending the range between fuel stops. The 2.0L turbodiesel engine’s ample torque also means effortless highway cruising and confident passing power, even when the car is loaded with passengers and luggage. These numbers showed BMW’s engineering, delivering a car that was both fun and frugal.

Annual fuel cost

The EPA estimated the annual fuel cost for the 2015 BMW 328d xDrive at $1,650. This figure is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind that real-world fuel costs will vary depending on driving habits, local diesel prices, and the mix of city versus highway driving. But the $1,650 figure provides a valuable reference point for comparing the 328d xDrive’s running costs to other vehicles in its class. For owners covering many miles, this number meant significant savings compared to gasoline-powered alternatives.

Real-world expectations

While EPA estimates provide a useful benchmark, real-world fuel economy always varies. Drivers who frequently engage in spirited driving or spend most of their time in stop-and-go traffic are unlikely to consistently achieve 34 MPG. However, owners who adopt a more moderate driving style and prioritize highway miles often report exceeding the EPA’s highway figure. The 328d xDrive’s eight-speed automatic transmission also plays a role, keeping the engine in its most efficient operating range. A well-maintained engine, proper tire inflation, and reduced cargo weight can all further improve fuel economy.

How it compares

When stacked against its competitors from 2015, the 328d xDrive presents a strong case. The gasoline-powered BMW 328i xDrive, for instance, was rated at 26 MPG combined, a significant disadvantage compared to the diesel. The Audi A4 2.0T quattro managed around 25 MPG combined. Even Lexus’s hybrid offerings were closely scrutinized. For instance, the Lexus CT 200h offered superb MPG (43 MPG combined), but it was not a sports sedan and would not fit the personality of the typical 328d buyer. The diesel offered a unique combination of performance, fuel economy, and all-weather capability. For buyers who need AWD, the Mercedes-Benz C300 4Matic, with its EPA-estimated 24 MPG combined, simply couldn’t compete on fuel costs. For those seeking to understand all Bmw fuel economy data, the 328d was always a standout choice.

Tips to maximize efficiency

Anticipate traffic flow to minimize unnecessary braking and acceleration. The 328d’s diesel engine delivers strong low-end torque, so gentle acceleration from a standstill saves fuel. Keeping a safe distance from other vehicles gives you more time to react and avoid sudden stops.

Ensure your tires are properly inflated. Refer to the sticker on the driver’s side doorjamb for the recommended tire pressure and check your tire pressure regularly. Underinflated tires increase rolling resistance, which reduces fuel economy. Properly inflated tires also improve handling and extend tire life.

Avoid extended idling. Diesel engines are relatively efficient at idle, but unnecessary idling still wastes fuel. If you’re stopped for more than a minute, it’s generally better to turn off the engine. Modern diesel engines start quickly and reliably, so there’s no need to let them warm up for extended periods.

Use cruise control on the highway. Cruise control helps maintain a constant speed, which minimizes unnecessary acceleration and deceleration. In addition to saving fuel, cruise control can also help you avoid speeding tickets. Of course, use cruise control responsibly and disengage it in heavy traffic or inclement weather.

Consider using BMW’s Eco Pro driving mode. This mode adjusts various vehicle settings, such as throttle response and transmission shift points, to prioritize fuel economy. It also provides feedback on your driving habits and offers tips on how to improve your fuel efficiency. Explore 328D MPG across all years.