For those considering the 2023 BMW 840i Convertible 3.0L 6-cyl, 24 MPG combined may not be their top concern. It’s open-air motoring with a potent engine sound and a luxurious experience. Buyers want excitement and a certain image. While they likely consider fuel costs, they’ve accepted some fuel consumption as part of owning this car.

City and highway performance

The EPA estimates for the 840i Convertible are 21 MPG in the city and 29 MPG on the highway. That highway number is respectable, suggesting the 3.0L turbocharged inline-six is efficient at cruising speeds. The city figure reflects the reality of stop-and-go driving. The engine is willing to rev, behavior encouraged by the car’s inherent sporting character. The smooth-shifting eight-speed automatic transmission (S8) helps both figures, optimizing gear selection for both performance and economy.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2023 BMW 840i Convertible at $2,400. This is based on driving 15,000 miles per year, with a 55/45 split between city and highway driving, using the national average fuel price. It’s a standard way to compare fuel costs across vehicles. Your actual costs could vary, depending on your driving habits and local fuel prices.

Real-world expectations

Real-world fuel economy will change based on driving style. A heavy foot will greatly reduce MPG, potentially dropping below the EPA’s estimates, especially in urban areas. But careful highway driving, using cruise control and anticipating traffic, can get you close to, or even slightly exceed, the 29 MPG rating.

The 840i’s character encourages spirited driving, so exceeding the EPA estimates may be hard for some drivers. It is important to consult 840I MPG across all years.

How it compares

The 840i’s fuel economy is competitive compared to other luxury convertibles. The Mercedes-Benz SL 55 AMG, with its more powerful V8, offers drastically lower MPG, getting in the low teens in the city. The Jaguar F-Type P450 Convertible, another stylish competitor is rated by the EPA at 17 city and 24 highway. While the Porsche 911 Carrera Cabriolet can achieve slightly better numbers with a combined EPA estimate of 20MPG city and 26 MPG highway, its price is much higher, its a two-door-sports car and it doesn’t offer identical levels of luxury. For those drawn to the BMW for its style, performance, and relative efficiency, the 840i is a good package. It’s also valuable to compare all Bmw fuel economy data.

Tips to maximize efficiency

Take advantage of the 840i’s driving modes. Selecting “Eco Pro” prioritizes fuel efficiency by adjusting throttle response, shifting patterns, and climate control settings. This mode works best for steady highway driving or easier city commutes.

Keep your tires properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressures often and inflate them to the recommended specifications, usually found on a sticker inside the driver’s side door jamb.

Avoid aggressive driving. Rapid acceleration and hard braking consume a lot of fuel. Smooth acceleration and watching traffic will greatly improve fuel economy. This vehicle has a 3.0L 6-cyl and can be driven without feeling like a gas guzzler while achieving EPA estimates.

Remove extra weight. Removing extra cargo from the vehicle makes it lighter and improves fuel efficiency. A lighter car needs less energy to accelerate and maintain speed.

Consider limiting your top-down driving. While open-air driving is appealing, driving with the top down increases aerodynamic drag, especially at higher speeds. This increased drag makes the engine work harder, reducing fuel economy. Consider using the top up on longer highway trips to maximize efficiency.