17 MPG combined is a figure that will likely be forgotten by those considering a 2020 BMW M8 Coupe. This isn’t a Prius; it’s a high-performance grand tourer designed to devour continents, not sip fuel. The M8 buyer wants a potent combination of luxury, exclusivity, and raw power, and they are willing to accept the fuel consumption penalty that comes with a twin-turbocharged V8.

City and highway performance

The EPA estimates that the 2020 BMW M8 Coupe achieves 15 MPG in city driving and 21 MPG on the highway. These figures reflect the M8’s split personality. In the city, stop-and-go traffic and the constant temptation to unleash the engine’s immense power contribute to the lower number. On the open road, with the car cruising at a steady speed, the M8 manages a slightly more respectable 21 MPG, though even this figure is hardly groundbreaking. The eight-speed automatic transmission (S8), while offering lightning-fast shifts and contributing to the car’s overall performance, is geared for both acceleration and relatively relaxed highway cruising, influencing these numbers.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2020 BMW M8 Coupe is estimated at $3,400. This figure is based on driving 15,000 miles per year, with 45% of those miles driven in the city and 55% on the highway, and using national average fuel prices for premium gasoline, which the M8 requires. While $3,400 might seem like a significant sum, it’s arguably a relatively small price to pay for the performance and prestige that the M8 offers, particularly for the target demographic. This is a vehicle purchased by individuals who prioritize driving experience over fuel efficiency.

Real-world expectations

The EPA estimates provide a useful benchmark, but real-world fuel economy can vary depending on driving style, traffic conditions, and even the type of terrain encountered. M8 drivers who frequently exploit the car’s performance potential, especially its impressive acceleration, will likely see fuel economy figures lower than the EPA estimates. Conversely, those who drive more conservatively may be able to achieve slightly better results. However, it’s safe to assume that the majority of M8 owners aren’t prioritizing fuel conservation in their daily driving.

How it compares

The 2020 BMW M8 Coupe exists in a rarified segment populated by other high-performance luxury coupes. The Mercedes-AMG S63 Coupe, with its own twin-turbo V8, delivers similar performance and a nearly identical EPA rating of 17 MPG combined. The Porsche 911 Turbo S manages a slightly better 18 MPG combined, while offering comparable performance and a more engaging driving experience to some enthusiasts. Even the Aston Martin DBS Superleggera, with its monstrous V12, only achieves a combined 16 MPG. Those shopping this segment are clearly not prioritizing fuel economy; they are looking for best-in-class performance and luxury, and accept the mileage trade-off. You can view all Bmw fuel economy data here. Interested in previous models? Find M8 MPG across all years.

Tips to maximize efficiency

While fuel economy might not be the primary concern for M8 owners, there are still steps they can take to minimize fuel consumption. Avoid hard acceleration and braking. The M8’s prodigious power is tempting to unleash, but doing so frequently will significantly impact fuel economy. Gradual acceleration and anticipation of traffic flow will contribute to better mileage.

Use the car’s driving modes intelligently. The M8 offers various driving modes, including an “Eco Pro” mode, which optimizes engine settings and throttle response for improved fuel efficiency. While it won’t transform the M8 into a hybrid, it can help save fuel in less demanding driving situations. Don’t expect miracles, but every little bit helps.

Ensure proper tire inflation. Underinflated tires increase rolling resistance, which leads to decreased fuel economy. Regularly check and maintain the correct tire pressure as specified in the vehicle’s owner’s manual. Similarly, ensure the vehicle is properly maintained. A well-maintained engine runs more efficiently.

Minimize idling. Excessive idling consumes fuel without covering any distance. If you’re stopped for more than a minute, turning off the engine can save fuel. While the M8 has a smooth start/stop system, some drivers dislike the sensation and disable it, to the detriment of fuel mileage. Consider employing it, even if it isn’t your favorite feature.