The 2015 BMW Alpina B7 SWB xDrive achieves 19 MPG combined fuel economy. This figure isn’t likely to sway anyone considering a hand-finished, ultra-performance sedan boasting a modified 4.4-liter V8 putting out over 500 horsepower. The Alpina B7 is for a buyer who prioritizes exclusivity, bespoke luxury, and effortless power over ultimate fuel efficiency, and they’re fully aware of the trade-off.

City and highway performance

The EPA estimates the 2015 Alpina B7 at 16 MPG in the city and 24 MPG on the highway. The city cycle, with its stop-and-go traffic, highlights the inherent thirst of a large-displacement, turbocharged engine. The highway figure is more palatable, reflecting the engine’s ability to cruise comfortably at lower RPMs. However, spirited highway driving, which is virtually guaranteed in a car this capable, will quickly lower that number. The xDrive all-wheel-drive system also contributes to the B7’s thirst.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 BMW Alpina B7 SWB xDrive at $3,050. This figure is based on driving 15,000 miles per year and assumes national average fuel prices. It’s important to understand that this is merely an estimate, and your actual fuel costs will vary depending on your driving habits, local fuel prices, and the grade of fuel you use. Given the high-performance nature of the engine, premium fuel is a virtual necessity. This will raise the cost of ownership even further. Buyers can research all Bmw fuel economy data to compare.

Real-world expectations

Real-world fuel economy for the Alpina B7 can be significantly lower than the EPA estimates, especially if the car is driven in a manner befitting its performance capabilities. Expect to see numbers closer to 14-15 MPG in mixed driving. Aggressive acceleration, frequent use of the sport modes, and extended periods of idling will all contribute to lower fuel economy. Conversely, careful drivers who prioritize efficiency can likely match, or even slightly exceed, the EPA highway estimate. Note that the B7 encourages spirited driving, which directly impacts fuel consumption. Consumers can also look at ALPINA MPG across all years for additional information.

How it compares

In the realm of high-performance luxury sedans, the Alpina B7’s fuel economy is what one might expect from a car packing this much performance. The Mercedes-AMG S63 Sedan, with its twin-turbo V8, achieves similar figures, around 17 MPG combined. The Porsche Panamera Turbo, another competitor, lands roughly in the same ballpark, averaging around 18 MPG. Even the less powerful BMW 750i xDrive, which shares a similar engine architecture, manages only slightly better fuel economy around 21 MPG combined. The Audi S8 is rated at 19 MPG combined but is known to be similarly thirsty in the real world. The Alpina B7 buyer isn’t cross-shopping a Toyota Prius. Performance and exclusivity are more important than fuel efficiency when considering this level of vehicle.

Tips to maximize efficiency

Use the Eco Pro driving mode whenever possible. While it dulls throttle response and modifies shift patterns, it can significantly improve fuel economy in less demanding driving situations. Reserve the Sport and Sport+ modes for when you genuinely need the extra performance.

Maintain a steady speed on the highway. The Alpina B7’s powerful engine makes it easy to accelerate quickly and maintain high speeds, but frequent changes in speed will drastically reduce fuel economy. Use cruise control on long stretches of open road.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate them to the recommended pressure listed on the driver’s side doorjamb.

Avoid unnecessary idling. Letting the engine idle for extended periods wastes fuel. If you’re going to be stopped for more than a minute, turn off the engine.

Service the vehicle according to Alpina’s recommended schedule. A well-maintained engine is a more efficient engine. Regular oil changes, air filter replacements, and spark plug maintenance will help optimize fuel economy.