19 MPG combined isn’t going to win the 2021 BMW M850i xDrive Gran Coupe any fuel-sipping awards, but that’s not the point of this car. This four-door coupe is luxurious and powered by a strong engine. Drivers want easy performance and a head-turning look over saving money at the gas station. If you’re comparing this to a Prius, you miss the point of the M850i. This car is a statement, and the statement isn’t “I want less gas.” It’s about power, presence, and prestige, with fuel efficiency as a lower priority.

City and highway performance

The EPA estimates for the M850i xDrive Gran Coupe are 17 MPG in the city and 24 MPG on the highway. The city figure shows stop-and-go traffic, where the 4.4-liter twin-turbo V8 works harder to move the M850i’s weight. The highway figure is better because cruising allows the engine to be more efficient, even with the Gran Coupe’s sleek body. Expect this number to change based on driving style; more aggressive driving will result in lower fuel economy. For drivers on longer trips, the M850I MPG across all years could average closer to the highway number, but those driving in the city will likely struggle to achieve the EPA combined estimate.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for operating the 2021 BMW M850i xDrive Gran Coupe is $3,050. This is based on driving 15,000 miles per year, using national average fuel prices. This is an estimate, and your fuel costs will depend on your driving, the fuel you buy (premium is required), and gas prices. Aggressive drivers or those in traffic should expect to spend more. Conservative drivers who mainly cruise on the highway may see slightly lower annual fuel costs.

Real-world expectations

While the EPA estimates provide a baseline, real-world fuel economy often differs. M850i owners report numbers slightly below the EPA estimates, especially in mixed driving. The temptation to use the V8’s power often leads to more spirited acceleration and lower fuel economy. Factors such as tire pressure, vehicle maintenance, and the type of gasoline used can impact fuel consumption. A combined MPG closer to 16-18 is reasonable in everyday driving, especially if you often use the car’s performance.

How it compares

The M850i xDrive Gran Coupe isn’t a leader in fuel efficiency. The Mercedes-AMG CLS 53, despite its performance, manages around 21 MPG combined thanks to its hybrid-assisted powertrain. The V8-powered Audi S7 achieves a slightly better 22 MPG combined. The Porsche Panamera, in its base configuration, can achieve up to 24 MPG combined. These differences can add up and may influence buyers mindful of fuel costs. However, the M850i appeals to buyers who will trade a few MPG for its styling, engine, and driving experience that focuses on power and handling. Be sure to review all Bmw fuel economy data to make a well-rounded decision.

Tips to maximize efficiency

While the M850i isn’t designed for maximum MPG, there are strategies to improve real-world fuel economy. Avoid using the engine’s full potential, as quick acceleration impacts fuel consumption. Smooth driving is important.

Make sure tires are inflated to the recommended pressure, as underinflated tires increase rolling resistance and reduce fuel efficiency. Check your tire pressure regularly as this can affect inflation levels.

Use the M850i’s driving modes. “Eco Pro” mode changes the engine mapping and transmission to prioritize fuel efficiency, at the cost of performance. Using cruise control on the highway promotes a steady speed and reduces fuel use.

Regular maintenance is essential for fuel economy. Ensure your engine is tuned, and that air filters are clean. A maintained engine runs more efficiently. Be sure to review the maintenance schedule to help keep your M850i running well.