23 MPG combined is a compromise in the 2017 BMW 640i Gran Coupe, but it’s one the buyer of this sleek four-door coupe readily accepts. This isn’t a car bought for pure frugality; it’s a statement. A statement about style, performance, and a willingness to prioritize driving pleasure over absolute fuel efficiency. The target demographic appreciates a responsive engine and sporty handling more than squeezing every last mile out of a gallon of premium fuel.

City and highway performance

The EPA estimates 20 MPG in the city and 29 MPG on the highway for the 2017 BMW 640i Gran Coupe, figures that reflect the car’s intended use. The city number acknowledges the realities of stop-and-go traffic, where the turbocharged 3.0L inline-six engine consumes more fuel during acceleration. But the highway figure showcases what’s possible when the 640i Gran Coupe is allowed to stretch its legs. With its smooth-shifting eight-speed automatic transmission and aerodynamic profile, it can achieve respectable fuel economy during long cruises. This split personality aligns with the car’s mission as a comfortable grand tourer capable of spirited performance when demanded. Remember to check 640I MPG across all years to see differences among model years.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 BMW 640i Gran Coupe at $2,500. This figure is derived from the EPA’s combined MPG rating of 23 MPG, assuming 15,000 miles driven per year and using national average fuel prices for premium unleaded gasoline. Of course, your actual fuel costs will vary depending on your driving habits, the type of driving you do (city vs. highway), and local fuel prices. Aggressive driving, excessive idling, and consistently choosing the “Sport” driving mode will all significantly increase your fuel expenses beyond the EPA’s estimate.

Real-world expectations

While the EPA provides a standardized benchmark, real-world fuel economy for the 2017 BMW 640i Gran Coupe can fluctuate depending on the driver. Owners who prioritize efficient driving and spend a significant amount of time on the highway may see numbers closer to or even slightly exceeding the EPA’s 29 MPG highway estimate. Conversely, those who frequently engage in spirited driving in urban environments will likely experience fuel economy closer to or even below the 20 MPG city rating. Remember, the turbocharged engine rewards enthusiastic driving, but that comes at the cost of increased fuel consumption.

How it compares

In the realm of luxury four-door coupes, the 2017 BMW 640i Gran Coupe’s fuel economy is competitive. The Audi A7 2.0T, for example, achieves a slightly better combined MPG of 25, but sacrifices some of the BMW’s driving engagement. The Mercedes-Benz CLS 400, a direct competitor, lands in a similar range around 24 MPG combined. A Porsche Panamera, while offering a higher performance ceiling, generally delivers lower fuel economy numbers, typically in the low 20s for combined MPG, depending on the specific engine configuration. The buyer in this segment carefully weighs performance, luxury, and styling against fuel economy, understanding that some compromises are inevitable. Check all Bmw fuel economy data for a detailed look.

Tips to maximize efficiency

Use the “Comfort” or “Eco Pro” driving modes in everyday driving. These modes remap the throttle response and shift points to prioritize fuel efficiency without dramatically compromising performance. While the “Sport” mode is tempting, reserving it for occasional bursts of acceleration or spirited driving can significantly improve overall fuel economy.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate them to the recommended levels listed on the driver’s side doorjamb.

Minimize idling. Letting the engine idle for extended periods consumes fuel without moving the car. If you anticipate a prolonged stop, such as waiting in a parking lot, turn off the engine. Modern engines do not require extended warm-up periods, so idling is generally unnecessary.

Avoid hard acceleration and sudden braking. Smooth, gradual acceleration and braking techniques minimize fuel consumption. Anticipate traffic flow and adjust your driving accordingly. This not only saves fuel but also improves overall driving comfort.

Keep up with scheduled maintenance. A well-maintained engine operates more efficiently. Regular oil changes, air filter replacements, and spark plug maintenance ensure optimal engine performance and fuel economy. Addressing any engine issues promptly can also prevent further fuel efficiency losses.