The 2017 BMW 650i Convertible with its 4.4L V8 gets 19 MPG combined. Efficiency isn’t the main draw for this car. It’s a grand touring convertible, built for effortless power and open-air enjoyment, things that don’t often lead to stellar fuel economy. This car is for drivers who prioritize a thrilling driving experience and the prestige of the BMW badge above all else; if high MPG is a must-have, this isn’t your ride.

City and highway performance

The EPA estimates 17 MPG in the city and 24 MPG on the highway for the 2017 BMW 650i Convertible. The city figure reflects the stop-and-go conditions and frequent acceleration that increase fuel consumption. The 24 MPG highway rating is better, showing the engine’s efficiency when cruising at a constant speed. However, even on the open road, the 4.4L V8’s eagerness to unleash its power can easily cause the MPG to dip below that number if you’re frequently tapping into its reserves.

Annual Fuel Cost

The EPA estimates the annual fuel cost for the 2017 BMW 650i Convertible at $3,050. This calculation is based on driving 15,000 miles per year, with a specified percentage of city versus highway driving, using national average fuel prices. Premium fuel is recommended for optimal performance in the 650i, which leads to this higher annual expense. This figure offers a benchmark but individual spending can vary greatly, depending on your driving style and fuel costs in your area.

Real-world expectations

EPA estimates provide a baseline, but real-world fuel economy can change. The 2017 BMW 650i Convertible’s fuel consumption is sensitive to driving habits. A heavy foot on the accelerator will worsen fuel economy, while a more conservative approach can yield results closer to or even slightly better than the EPA estimates, particularly on long highway journeys. The pleasure of hearing the V8 roar is often too tempting for most drivers to resist, however, making the official numbers somewhat optimistic in practice.

How it compares

The 2017 BMW 650i’s fuel economy is in the middle compared to other luxury convertibles. The Mercedes-Benz SL550, with a similar V8 engine, achieves approximately 17 MPG city and 25 MPG highway. The Jaguar F-Type R Convertible, known for its performance, delivers figures closer to 16 MPG city and 24 MPG highway. For those willing to sacrifice some performance for better efficiency, the Porsche 911 Carrera Cabriolet can achieve closer to 20 MPG city and 28 MPG highway with its base engine. Those considering this class of vehicle are typically weighing performance specs, so knowing the 650I MPG across all years can provide a good baseline.

Tips to maximize efficiency

Take advantage of the BMW’s driving mode selector. In Comfort or Eco Pro mode, the engine and transmission are tuned for smoother and more fuel-efficient operation. Use these modes during relaxed cruising, which will help to use fuel more effectively than in Sport or Sport+ modes.

Maintain a steady speed on the highway whenever possible. Frequent acceleration or braking will consume more fuel. Anticipate traffic flow and use cruise control on long, level stretches of road. The 8-speed automatic transmission helps with efficient cruising, but only if you let it do its job without constant intervention.

Ensure the car is properly maintained. Regular maintenance, including oil changes and tire inflation, can improve fuel economy. Underinflated tires increase rolling resistance, forcing the engine to work harder. A well-tuned engine will always operate more efficiently.

Avoid unnecessary weight. Excessive cargo in the trunk or passenger compartment adds extra load, which negatively impacts fuel economy. Remove any items that are not essential for your journey. The sleek design of the 2017 BMW 650i Convertible offers great looks, but adding weight will reduce fuel economy.

Limit idling time. Letting the engine idle for extended periods consumes fuel without covering any distance. If you anticipate a wait of more than a minute, it’s generally more efficient to turn off the engine and restart when ready. Check all Bmw fuel economy data if you are curious about other years.