16 MPG combined. That’s the number that hangs in the air when discussing the 2016 BMW M6 Coupe. But to focus solely on that figure is to fundamentally misunderstand the M6, its purpose and, crucially, the mindset of the individual who slides behind its wheel. This isn’t a Prius competitor aiming for hypermiling records. It’s a high-performance grand tourer draped in a seductive coupe body, a machine built for exhilarating bursts of speed and cross-continental journeys, not maximizing fuel efficiency.

City and highway performance

The M6’s 14 MPG city rating is what one expects from a hand-built, twin-turbocharged 4.4-liter V8 producing more than 550 horsepower. Stop-and-go traffic is the antithesis of what this car is designed for, a constant tease that never allows the engine to stretch its legs. On the open highway, things improve slightly, reaching an EPA-estimated 20 MPG. Even there, restrain is key. Sustained high-speed cruising will undoubtedly dip below that mark as the temptation to exploit the M6’s strong power becomes overwhelming.

Annual fuel cost

The EPA estimates an annual fuel cost of $3,600 for the 2016 BMW M6 Coupe. This figure is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway, using national average fuel prices. This expense signals that M6 ownership is not for those on a strict budget. Premium fuel is required, further adding to the overall cost. However, to the typical M6 buyer, this number is simply factored into the cost of owning such an exclusive and powerful machine.

Real-world expectations

While the EPA provides a standardized benchmark, real-world MPG will vary depending on driving style and conditions. Aggressive acceleration, frequent braking, and extended idling will all decrease fuel economy. Those who regularly engage “launch control” can expect significantly lower numbers. The M6 is a car that rewards responsible driving with slightly less abysmal fuel consumption, but it’s unlikely that anyone will consistently match, let alone exceed, the EPA estimates, especially with the siren call of the car’s performance capabilities.

How it compares

Compared to other high-performance coupes of its era, the M6’s fuel economy is not a strong point. The Mercedes-AMG S63 Coupe, with its own twin-turbo V8, achieves a similar 15 MPG combined. The Porsche 911 Turbo, while offering comparable performance, manages a slightly better 20 MPG combined, Porsche focuses on efficiency even within their performance models. Even stepping outside the coupe segment, the Cadillac CTS-V sedan, with its supercharged V8, posts a similar 17 MPG combined. These comparisons are secondary considerations for most M6 shoppers; performance, exclusivity, and the BMW badge usually outweigh marginal differences in fuel costs. However, for those considering the broader picture, checking M6 MPG across all years can provide valuable insights. You can also see all Bmw fuel economy data.

Tips to maximize efficiency

While the M6 isn’t designed for fuel efficiency, there are still steps owners can take to minimize fuel consumption. The most obvious is to adopt a smoother, more conservative driving style, avoiding abrupt acceleration and hard braking. Anticipating traffic flow and maintaining a steady speed can significantly improve MPG figures.

Ensure that the M6’s tires are properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check the recommended tire pressure on the driver’s side doorjamb and maintain it regularly.

Minimize idling time. Letting the car idle for extended periods, especially when the engine is cold, wastes fuel. Turn off the engine if you anticipate a wait of more than a minute or two. The M6’s advanced engine management system doesn’t require lengthy warm-up periods.

Use the ECO PRO driving mode, if available. This mode adjusts throttle response and other engine parameters to prioritize fuel efficiency, at the expense of performance. While it won’t transform the M6 into a fuel sipper, it can make a noticeable difference under normal driving conditions.

Regular maintenance is critical. A well-maintained engine runs more efficiently. Ensure that the M6 receives timely oil changes, air filter replacements, and spark plug maintenance according to the manufacturer’s recommendations. This not only improves fuel economy but also ensures the long-term health of the engine.