The 2019 BMW 640i Gran Coupe 3.0L 6-cyl achieves 23 MPG combined, a number most buyers prioritizing its style and performance will likely find acceptable. This car isn’t for penny-pinchers. This is for those who appreciate a sleek, four-door coupe with a potent inline-six, and are willing to accept decent fuel economy as a trade off.

City and highway performance

The 640i Gran Coupe gets an EPA-estimated 20 MPG in the city and 29 MPG on the highway. The city number reflects typical stop-and-go driving, showcasing the responsiveness of the 3.0L turbocharged engine. Its highway figure is respectable, showing the car’s ability to cruise comfortably at higher speeds. The eight-speed automatic transmission (S8) helps optimize fuel efficiency, selecting the best gear for maximum economy without sacrificing responsiveness.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 BMW 640i Gran Coupe at $2,500. This is based on 15,000 miles per year, a mix of city and highway driving, and national average fuel prices. Actual fuel costs will vary based on driving habits, location, and fuel prices, but $2,500 is a useful benchmark for potential owners. Consider this when budgeting for the overall cost of ownership, including insurance, maintenance, and other costs.

Real-world expectations

The EPA provides a standardized test, but real-world fuel economy will vary. Aggressive driving, heavy traffic, and extreme weather can all decrease fuel efficiency. Owners who frequently push the engine may see numbers closer to the city estimate, while those who prioritize smooth highway driving might exceed the EPA’s 29 MPG. The 640i Gran Coupe’s onboard computer provides real-time and average fuel economy data, allowing drivers to track and adjust their driving to maximize efficiency. Checking the 640I MPG across all years can help understand broader MPG trends as well.

How it compares

Among luxury four-door coupes, the 2019 BMW 640i Gran Coupe’s fuel economy is typical, not exceptional. The Audi A7, with a 3.0L supercharged V6, gets about 22 MPG combined. The Mercedes-Benz CLS450, with its mild-hybrid system, achieves slightly better fuel economy, around 24 MPG combined. The Porsche Panamera, in its base configuration, achieves a similar 23 MPG combined. Those looking to save on less gas can consider the hybrid Panamera E-Hybrid, but it’s more expensive. The 640i Gran Coupe’s fuel economy aligns with its competitors, so the choice often depends on styling, performance, and brand preference.

Tips to maximize efficiency

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate them to the recommended pressure listed on the door jamb sticker.

Avoid aggressive driving. Rapid acceleration and hard braking consume more fuel. Accelerate smoothly and anticipate traffic to minimize sudden stops. Use cruise control on level highways to maintain speed and reduce unnecessary acceleration.

Reduce unnecessary weight. Carrying extra weight reduces fuel economy. Remove unnecessary items from the trunk or rear seats.

Minimize idling. If you’re stopped for more than a minute, turn off the engine. Modern engines restart quickly and efficiently, and idling wastes fuel.

Keep your car maintained. Regular maintenance, like oil changes and air filter replacements, ensures efficient engine operation. A well-maintained engine uses less fuel and lasts longer.

Consider the driving mode. If equipped with “Eco Pro” mode, activate it when appropriate to prioritize fuel-saving settings. Check all Bmw fuel economy data for other models with Eco Pro modes.