The 2024 BMW 840i Gran Coupe 3.0L 6-cyl gets 24 MPG combined. It’s a stylish and spacious four-door that prioritizes driving pleasure and looks over great efficiency. While this number might not be impressive compared to hybrids and EVs, it’s acceptable for buyers who value a smooth inline-six engine, refined handling, and striking design.

City and highway performance

The 840i Gran Coupe gets an EPA-estimated 21 MPG in the city and 29 MPG on the highway. The 21 MPG around town isn’t award-winning, but it’s realistic for a car of this size and power. The six-cylinder engine delivers plenty of low-end torque for easy acceleration, but frequent stop-and-go traffic will increase fuel consumption. On the open road, the 840i is great. Its comfortable ride, quiet cabin, and responsive engine make it a pleasure to drive long distances. The 29 MPG highway rating shows its ability to cruise efficiently.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2024 BMW 840i Gran Coupe at $2,400. This is based on driving 15,000 miles per year and using national average fuel prices. This number is an estimate, and your actual fuel costs may differ depending on your driving, fuel type, and location. Drivers who accelerate quickly or drive in heavy city traffic will likely spend more. However, those who mainly drive on the highway and drive conservatively may achieve better fuel economy and reduce their annual fuel costs.

Real-world expectations

EPA estimates offer a baseline, but real-world fuel economy can vary. The 840i Gran Coupe’s automatic transmission and efficient engine technology help maximize fuel economy, but driving style, traffic, and even tire pressure can matter. Owners who prioritize performance and often drive the engine hard will likely see fuel economy closer to the lower end of the EPA range. Drivers who drive more calmly and use the car’s Eco Pro driving mode can expect to approach the EPA estimates, maybe even exceeding them sometimes.

How it compares

The 2024 BMW 840i Gran Coupe competes with luxury sedans and coupes, each with different fuel economy. The Mercedes-Benz CLS 450, for example, is rated at 22 MPG combined, making it less efficient than the 840i. The Audi A7, with quattro all-wheel drive, gets a similar 24 MPG combined. The Porsche Panamera, even the base model, has a combined MPG of around 21. For buyers considering all Bmw fuel economy data, the 840I MPG across all years is important to consider and these alternatives provide crucial context. The 840i’s fuel economy is competitive within its class, and the decision comes down to styling, performance, and brand.

Tips to maximize efficiency

Use the car’s Eco Pro driving mode when you can. This mode adjusts the engine and transmission to focus on fuel efficiency. You’ll notice a slight reduction in throttle response, but it can measurably reduce fuel consumption, especially in cities.

Avoid aggressive acceleration and hard braking. Smooth acceleration and deceleration improve fuel economy and create a more relaxed driving experience. The 840i Gran Coupe has plenty of power, but using it wisely will save fuel.

Make sure your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel efficiency. Check your tire pressure and inflate them to the recommended pressure, which is on a sticker on the driver’s side doorjamb.

Minimize idling. Idling wastes fuel without covering distance. If you’re stopped for more than a minute, turn off the engine. The 840i Gran Coupe has an automatic start/stop system that reduces idling fuel consumption, but you can also manually turn off the engine.