While 24 MPG combined isn’t the main reason to buy the 2021 BMW 230i xDrive Convertible, it’s a stylish, compact, and fun-to-drive droptop engineered for enjoyment, not hypermiling. The fuel economy is simply a cost for those who prioritize open-air motoring and the unmistakable BMW driving experience, especially with xDrive all-wheel drive.

City and highway performance

The EPA estimates the 2021 BMW 230i xDrive Convertible at 21 MPG in the city and 30 MPG on the highway. These figures reflect the 2.0-liter turbocharged four-cylinder engine’s behavior under different driving conditions. Frequent stops and starts in urban environments impact fuel consumption. On the open road, the smooth eight-speed automatic transmission allows the engine to cruise efficiently, resulting in better highway MPG. Drivers who spend most of their time in congested city traffic will likely see figures closer to 21 MPG, while those who frequently embark on longer journeys can expect to approach or potentially exceed the 30 MPG highway estimate.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 BMW 230i xDrive Convertible at $2,400. This figure is based on driving 15,000 miles per year and national average fuel prices. Individual spending can vary depending on driving habits, local fuel costs, and the type of fuel used. The 230i’s turbocharged engine requires premium gasoline to deliver its peak performance and efficiency, influencing the overall cost. While $2,400 represents a benchmark, owners should track their own fuel consumption and costs to gain a more accurate understanding of their spending.

Real-world expectations

EPA estimates provide a baseline, but real-world fuel economy often differs. The 2021 BMW 230i xDrive Convertible is driven by enthusiasts who appreciate its performance. Frequent use of the accelerator to experience the engine’s responsiveness and all-wheel-drive grip may result in lower MPG than the official figures suggest. Drivers who adopt a more conservative driving style, particularly on longer trips, may achieve numbers closer to or even slightly above the EPA estimates. Aggressive acceleration, frequent use of Sport mode, and extensive idling can significantly reduce fuel efficiency.

How it compares

The 2021 BMW 230i xDrive Convertible occupies a unique space in the market, blending sporty driving dynamics with open-air enjoyment. Competitors like the Mazda MX-5 Miata offer better fuel economy, achieving around 29 MPG combined. However, the Miata prioritizes lightweight agility over all-weather capability and luxury features. Stepping up in price and size, the Audi A3 Cabriolet offers a similar blend of luxury and open-air driving, with its base front-wheel-drive model achieving around 31 MPG highway. The BMW Z4, while sharing a similar mission with the 230i, generally sees similar, sometimes slightly lower, fuel economy because of its more powerful engines. Compared to these options, the 230i strikes a balance, offering respectable, if not class-leading, fuel economy within its performance and luxury context. Be sure to check 230I MPG across all years to compare prior model years.

Tips to maximize efficiency

Optimize your driving style. The 230i’s eager engine can entice you to accelerate quickly, but smooth and gradual acceleration conserves fuel. Anticipate traffic flow to avoid unnecessary braking and maintain a steady pace whenever possible. Avoiding aggressive driving habits will improve your fuel economy and extend the life of your tires and brakes.

Monitor tire pressure regularly. Underinflated tires increase rolling resistance, decreasing fuel efficiency. Check your tire pressure at least once a month and ensure it matches the recommended levels on the doorjamb sticker. Properly inflated tires also enhance handling and safety.

Reduce unnecessary weight. Carrying extra cargo in the trunk adds weight, forcing the engine to work harder and consume more fuel. Remove any unnecessary items from the trunk and rear seats to lighten the load. Every pound counts when it comes to maximizing fuel economy.

Use cruise control on the highway. Cruise control maintains a consistent speed, minimizing fluctuations in engine RPM and improving fuel efficiency on long stretches of highway. Engage cruise control whenever conditions allow to optimize fuel consumption and reduce driver fatigue.

Consider using Eco Pro mode, even though it slightly dulls throttle response. This mode optimizes various vehicle systems for fuel efficiency, including throttle mapping and shift points. While it might not be ideal for spirited driving, Eco Pro mode is a valuable tool for maximizing MPG on everyday commutes.

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