24 MPG combined is not the main reason someone buys a 2023 BMW 840i Coupe. This sleek two-door isn’t about practicality or saving money; it’s about style, performance, and a certain understated presence. Buyers accept this fuel economy figure because they prioritize the 335 horsepower generated by the turbocharged inline-six, the responsive handling, and the luxurious experience over squeezing every last mile from a gallon of premium unleaded.

City and highway performance

The 840i’s EPA ratings break down to 21 MPG in the city and 29 MPG on the highway. The city figure reflects stop-and-go driving, where the engine’s efficiency is hampered by constant acceleration and deceleration. However, the 29 MPG highway figure is respectable, especially considering the car’s performance. The eight-speed automatic transmission helps optimize fuel efficiency at higher speeds, keeping the engine in its best operating range. The 840I MPG across all years shows gradual improvements reflecting advancements in BMW powertrain technology.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2023 BMW 840i Coupe at $2,400. This figure is based on driving 15,000 miles per year and assumes the national average fuel price. It’s a useful benchmark for comparison, but keep in mind that your actual fuel costs will vary based on your driving habits, the type of roads you typically drive on, and where you live. Fuel prices can fluctuate significantly, so budget accordingly. This is one of the less attractive stats shown on all Bmw fuel economy data and it’s often downplayed by sellers as the type of buyer for this vehicle doesn’t prioritize it.

Real-world expectations

The EPA provides a standardized testing procedure; however, real-world fuel economy often differs. Aggressive driving, frequent short trips, and consistent use of the Sport driving mode will lower your MPG. Consistent highway cruising at moderate speeds, combined with gentle acceleration, can potentially bring you closer to the EPA’s highway estimate, and even slightly exceed it. Consider downloading a fuel tracking app on your smartphone to monitor your fuel consumption and driving habits closely. This can provide insight into how your driving style affects your MPG.

How it compares

Comparing the 840i to its competitors puts its fuel economy in context. The Mercedes-Benz C300 Coupe, with its turbocharged four-cylinder, achieves a combined rating of 28 MPG. The C300 offers a different driving experience, prioritizing efficiency over outright performance. The Porsche 911 Carrera, a more direct competitor in terms of performance, manages around 21 MPG combined, making the 840i seem efficient. Even the Audi S5 Coupe, a similarly styled performance coupe, only manages 24 MPG combined. These comparisons show that while the 840i isn’t a fuel-sipping hybrid, it offers a reasonable compromise between performance and efficiency within its class.

Tips to maximize efficiency

Take advantage of the BMW’s driving modes. Selecting “Eco Pro” mode optimizes the car’s systems for maximum fuel efficiency. This mode adjusts throttle response, shift points, and climate control settings to conserve fuel. Use it for longer highway drives or when you prioritize fuel economy over sporty performance.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly and maintain the recommended pressure specified on the driver’s side doorjamb. This is a simple way to improve your MPG.

Avoid unnecessary idling. Letting the engine idle for extended periods wastes fuel. If you anticipate being stopped for more than a minute, turn off the engine. Modern engines are designed to restart quickly and efficiently, so you won’t cause undue wear and tear.

Plan your routes efficiently. Combining errands into a single trip minimizes cold starts, which are fuel-intensive. Avoid congested areas whenever possible to reduce stop-and-go driving. Planning can make a difference in your fuel consumption.

Use cruise control on the highway. Maintaining a constant speed prevents acceleration and deceleration, which improves fuel economy. This is true on long, flat stretches of road. Be mindful of traffic conditions and adjust your speed accordingly, but cruise control can be a tool for maximizing MPG on the highway.