19 MPG combined is what you’ll get when driving the 2018 BMW 650i xDrive Gran Coupe. This isn’t a penalty box; it’s the cost for those who want a potent twin-turbo V8, all-wheel drive, and the sleek lines of a four-door coupe. The 650i xDrive Gran Coupe is for a specific buyer: someone who values driving pleasure and unique style over outright fuel efficiency. They aren’t considering hybrids; they’re probably upgrading from a previous BMW or considering a similar performance-focused luxury car.

City and highway performance

The EPA numbers show the 650i xDrive Gran Coupe’s thirst for fuel. City driving yields a disappointing 16 MPG, a result of stop-and-go traffic constantly affecting the engine’s efficiency. One benefit is the 25 MPG highway figure. While still not great, it shows the engine can achieve reasonable economy at steady speeds. The eight-speed automatic transmission is important here, keeping the engine in its best range for both power and fuel conservation. However, the temptation to push the V8’s power will always be there, further affecting real-world mileage.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2018 BMW 650i xDrive Gran Coupe is $3,050. This is based on driving 15,000 miles per year, with a roughly even split between city and highway driving, and assumes national average fuel prices. Premium fuel, which is required for best performance in the 650i, also increases the cost. It’s a large sum, and shows that fuel economy wasn’t a main design goal for this car. Most 650i buyers should be able to handle this budget item.

Real-world expectations

While the EPA provides a standard, real-world fuel economy often differs. Aggressive driving, frequent short trips, and bad weather can all lower the numbers. Expect to see less than 16 MPG in the city if you often accelerate quickly. On the other hand, careful highway driving might get close to or even slightly exceed 25 MPG, but only with effort and restraint. Tire pressure, car maintenance, and even the type of fuel used can cause changes.

How it compares

The 650i xDrive Gran Coupe is in a competitive field of similarly powerful and luxurious cars. The Mercedes-Benz CLS550, with its own twin-turbo V8, offers similar performance and fuel economy, around 17 MPG combined. The Audi S7, while having a smaller V8, still gets around 19 MPG combined, trading some power for slightly better efficiency. Then there’s the Porsche Panamera, where the base model V6 achieves a better 21 MPG combined, proving that fuel efficiency can be combined with four-door performance, but with a different engine. For BMW fans, checking 650I MPG across all years can help show how the 2018’s economy compares. Buyers considering all Bmw fuel economy data may find they’re accepting a hit in efficiency for the uniquely composed driving experience that the 650i provides.

Tips to Maximize Efficiency

Use the 650i xDrive Gran Coupe’s driving modes. Selecting “Eco Pro” will change the throttle response, shift points, and climate control settings to focus on fuel efficiency. While it might slightly reduce the car’s responsiveness, it can make a noticeable difference in fuel, especially during highway driving.

Avoid long idling times. The 4.4L V8 uses a lot of fuel even when stopped. If you expect a delay of more than a minute, turn off the engine. Modern start-stop systems can help with this, but they may not always activate in certain situations.

Keep proper tire inflation. Underinflated tires increase rolling resistance, making the engine work harder and burn more fuel. Check your tires regularly and inflate them to the recommended pressure listed on the driver’s side door jamb. This is a simple step that can produce real improvements.

Drive smoothly and predict traffic flow. Avoid sudden acceleration and braking, as these actions waste fuel. Keep a consistent speed on the highway, and use cruise control where helpful. By predicting traffic and driving smoothly, you can minimize unnecessary fuel use.

Keep up with scheduled maintenance. A well-maintained engine always runs more efficiently. Make sure the air filter is clean, the spark plugs are in good condition, and the engine oil is fresh. Regular servicing helps to prolong the life of your car and improves its fuel economy.