23 MPG combined isn’t a great number, but that’s what the 2016 BMW 640i Gran Coupe gets. This car isn’t bought by people obsessively chasing efficiency, though. It’s for those who prioritize sleek design, a luxurious interior, and the smooth power of BMW’s inline-six. Fuel economy is less important than the experience, but it’s still a trade-off many 640i Gran Coupe owners are willing to accept.

City and highway performance

The EPA estimates 20 MPG in the city and 30 MPG on the highway for the 2016 BMW 640i Gran Coupe. These figures reflect the car’s nature. Stop-and-go city driving highlights the engine’s need to work harder, impacting fuel consumption.

However, on the open highway, the 640i’s slick-shifting eight-speed automatic transmission and efficient engine shine, allowing for relaxed cruising and improved mileage. The highway number is respectable, but the city MPG reinforces that urban drivers will see a greater impact on their fuel bill.

Annual fuel cost

The EPA estimates an annual fuel cost of precisely $2,500 for the 2016 BMW 640i Gran Coupe. This figure is based on driving 15,000 miles per year, with a specific percentage allocated to city and highway driving and using national average fuel prices at the time of calculation.

Individual fuel costs will vary depending on driving habits and local fuel prices, but this provides a standardized benchmark for potential owners to consider. Premium fuel is recommended (and often required) for optimal performance of the 640i’s engine, adding to the overall running costs.

Real-world expectations

The EPA provides a useful baseline, but real-world MPG often differs. Aggressive driving, frequent short trips, and carrying extra weight can all negatively impact fuel economy. Owners who prioritize driving pleasure and frequently the engine’s power will likely see figures closer to the city estimate, or even slightly below.

Those who primarily use the 640i for longer highway journeys, and drive conservatively, may approach or even slightly exceed the 30 MPG highway figure. Tire pressure, vehicle maintenance, and even weather conditions can play a significant role in achieving optimal fuel efficiency. Before purchasing this car, you might wish to look at 640I MPG across all years.

How it compares

The 2016 BMW 640i Gran Coupe’s fuel economy is competitive, but not class-leading. For example, the Audi A7 3.0T, another stylish four-door coupe, achieves around 24 MPG combined. The Mercedes-Benz CLS400, while slightly less powerful, manages a similar 23 MPG combined.

A Porsche Panamera 3.0L, known for performance, achieves around 21 MPG combined. These comparisons show that the 640i Gran Coupe’s fuel economy is in line with the expectations for vehicles in this segment: offering a balance of performance, luxury, and style, without prioritizing maximum efficiency. For those looking for better fuel economy from BMW as a brand, you may want to review all Bmw fuel economy data. The buyer considers these alternatives but accepts the 640i’s MPG because it aligns with their brand preference, design aesthetic, and driving dynamics.

Tips to maximize efficiency

Maintaining optimal tire pressure is important for maximizing fuel efficiency in any vehicle, including the 640i Gran Coupe. Check your tire pressure regularly and inflate them to the recommended levels listed on the driver’s side doorjamb. Underinflated tires create more rolling resistance, forcing the engine to work harder and consume more fuel.

Avoid aggressive acceleration and braking. The 640i’s strong engine is tempting, but doing so frequently will significantly reduce fuel economy. Drive smoothly and anticipate traffic flow to minimize the need for sudden bursts of speed or hard braking.

Use the car’s driving mode selector. The “Eco Pro” mode optimizes various vehicle settings, including throttle response and transmission mapping, to prioritize fuel efficiency. While it might slightly dampen performance, it can make a noticeable difference in fuel consumption during everyday driving.

Minimize idling time. Letting the engine idle for extended periods wastes fuel. If you anticipate stopping for more than a minute or two, it’s best to turn off the engine. Modern engines start quickly and efficiently, so restarting is not a major drain on the battery.

Ensure the vehicle is properly maintained. Regular oil changes, air filter replacements, and spark plug maintenance are essential for optimal engine performance and fuel efficiency. A well-maintained engine runs more efficiently, reducing fuel consumption and extending the life of the vehicle.