The 2015 BMW M5 offers a combined fuel economy of 16 MPG. It’s a figure that won’t win any awards for lower fuel costs, but reflects the trade-off some drivers willingly make for performance, luxurious features, and the BMW brand. The M5 isn’t bought by people prioritizing fuel efficiency; it’s purchased by enthusiasts seeking a visceral driving experience.

City and highway performance

The M5’s official EPA estimates show 14 MPG in the city and 20 MPG on the highway. This difference highlights the engine’s thirst for fuel with stop-and-go traffic and quick acceleration. The turbocharged 4.4-liter V8 requires a lot of fuel to deliver its power. The highway estimate, while still not exceptional, reflects the engine’s ability to cruise more economically at steady speeds, if you can resist the urge to use its full potential. The seven-speed dual-clutch automatic transmission (AM-S7) offers fast and precise shifts, but doesn’t dramatically improve fuel economy compared to a traditional automatic.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 BMW M5 at approximately $3,600. This is based on driving 15,000 miles per year and using national average fuel prices. This is a significant expense, and potential M5 buyers should consider it in their long-term ownership costs. The premium fuel required by the engine adds to the overall cost. Anyone considering an M5 needs to be prepared for this relatively high annual fuel bill.

Real-world expectations

EPA estimates provide a baseline, but real-world fuel economy for the 2015 M5 can vary depending on driving style and conditions. Owners who frequently use the engine’s performance, spending time in Sport and Sport+ modes, will likely see figures below the EPA estimates and potentially single digits during fast driving. However, those who primarily use the M5 for commuting and drive more conservatively might achieve figures closer to, or slightly above, the EPA numbers. It’s unlikely anyone buying an M5 avoids enjoying the car’s performance. Check M5 MPG across all years to see how economy has changed over time.

How it compares

The 2015 M5’s fuel economy is in the expected range for high-performance sedans in its class. The 2015 Mercedes-AMG E63 S, with its 5.5-liter V8, posts almost identical EPA numbers. The 2015 Cadillac CTS-V, equipped with a supercharged 6.2-liter V8, also delivers similar fuel economy ratings. Even newer rivals like the Alfa Romeo Giulia Quadrifoglio (17 MPG combined) offer only small improvements. The priority here is balancing fuel consumption with performance. Buyers in this segment usually accept the trade-off. To see all Bmw fuel economy data, check out our brand pages.

Tips to maximize efficiency

Avoid constantly using the M5’s power. Accelerating quickly at every stoplight and pushing the engine to its limit will decrease fuel economy. Instead, accelerate smoothly and maintain a steady pace when possible.

Use the M5’s driving modes. Comfort or Eco Pro mode will reduce the engine and transmission output for better fuel efficiency. These modes don’t turn the M5 into a hybrid, but they can make a difference in everyday driving, particularly on commutes.

Make sure the M5’s tires are properly inflated. Underinflated tires increase rolling resistance, which makes the engine work harder and consume more fuel. Check the tire pressure regularly and inflate them to the recommended specifications on the door jamb.

Minimize unnecessary weight in the vehicle. Removing heavy items from the trunk or rear seats reduces the energy needed to accelerate, leading to a small improvement in fuel economy.