28 MPG combined isn’t going to top any fuel economy charts, but it reveals a key truth about the 2019 BMW Z4 sDrive30i: efficiency is a secondary concern. This isn’t a commuter car; it’s a two-seat roadster designed for spirited driving and open-air enjoyment. The fuel economy is good enough to avoid guilt on longer weekend drives, but the performance and experience ultimately determine its desirability. Owners accept the fuel economy because the payoff in driving pleasure is worth it.

City and highway performance

The 2019 Z4 sDrive30i earns its 25 MPG city and 32 MPG highway ratings with relatively little effort. The turbocharged 2.0-liter four-cylinder provides ample power for confident acceleration, making city driving surprisingly fun. The eight-speed automatic transmission shifts smoothly and predictably, optimizing fuel economy without sacrificing responsiveness.

Out on the open road, the Z4 settles into a comfortable cruise, and the 32 MPG highway figure is readily achievable, allowing for relaxed, top-down touring. The engine’s strong mid-range torque means effortless passing, even without downshifting. The car’s relatively light weight also helps boost its efficiency.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2019 BMW Z4 sDrive30i is $2,050. This figure is based on driving 15,000 miles per year and using national average fuel prices. While this is a useful benchmark, individual fuel costs will vary depending on driving habits, location, and current gas prices. If you drive significantly less than 15,000 miles annually, or if fuel prices are lower in your area, your actual fuel cost could be noticeably less.

Conversely, aggressive driving will increase fuel consumption and, as a result, the annual fuel expense.

Real-world expectations

While the EPA estimates provide a good baseline, real-world fuel economy often differs. Drivers who frequently engage in spirited acceleration or spend a lot of time in stop-and-go traffic will likely see figures closer to the 25 MPG city rating, even on longer drives. Conversely, those who prioritize smooth acceleration and maintain consistent highway speeds can often exceed the 32 MPG highway estimate. The Z4’s driving mode selector also plays a role; switching to “Eco Pro” mode prioritizes fuel efficiency by adjusting throttle response and shift points, potentially squeezing out a few extra miles per gallon from your Z4 MPG across all years.

How it compares

Compared to its competitors, the 2019 Z4 sDrive30i’s fuel economy is competitive, but not class-leading. The Porsche 718 Boxster with its base 2.0-liter engine achieves an EPA-estimated 24 MPG combined. The Audi TT Roadster with its 2.0-liter engine is similarly rated around 26 MPG combined. The fact that the Z4 sits slightly higher than these two on fuel economy is a small perk for its buyers. These are all sports cars purchased for performance, so fuel economy is rarely a determining factor, but if you compare all Bmw fuel economy data you can infer which models prioritize economy.

Tips to maximize efficiency

Take advantage of the Eco Pro driving mode. This mode optimizes various vehicle settings, including throttle response and shift points, to maximize fuel efficiency. While it may dampen performance somewhat, it’s a useful option for everyday driving or when prioritizing fuel economy.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which reduces fuel efficiency. Check your tire pressure regularly and inflate them to the recommended pressure listed on the doorjamb sticker.

Avoid aggressive driving habits. Rapid acceleration, hard braking, and high speeds consume more fuel. Smooth and steady driving not only improves fuel economy but also enhances the overall driving experience.

Minimize idling time. Letting your engine idle for extended periods wastes fuel. If you’re stopped for more than a minute or two, turn off the engine. Modern engines are designed to restart quickly and efficiently.

Properly maintain your vehicle. Regular maintenance, such as oil changes and air filter replacements, ensures that your engine is running at peak efficiency. Follow the recommended maintenance schedule in your owner’s manual.