28 MPG combined is a respectable fuel economy figure for the 2023 BMW Z4 sDrive30i. It’s not going to win any hypermiling competitions, but it’s also not embarrassing for a stylish, rear-wheel-drive roadster designed for weekend thrills rather than maximizing commuting efficiency. This Z4 isn’t about practicality; it’s about the driving experience, and for buyers prioritizing that experience, the fuel consumption is a manageable compromise.

City and highway performance

The Z4’s EPA ratings break down to 25 MPG in the city and 33 MPG on the highway. The city figure reflects the stop-and-go nature of urban driving, where the turbocharged four-cylinder engine works harder to overcome inertia. The fuel-saving engine start/stop helps here, but it can be jarring for some drivers. Out on the open road, the Z4 shines. At a steady cruise, the engine loafs along, taking advantage of its efficient design with all eight gears. The highway number allows for comfortable and relatively economical long-distance travel, especially if the driver resists the urge to frequently exploit the engine’s power reserves.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2023 BMW Z4 sDrive30i at $2,050. This figure is based on driving 15,000 miles per year and using national average fuel prices. Of course, your actual fuel costs will vary depending on how many miles you drive, your driving style, and the fuel prices in your area. Drivers who frequently engage in spirited driving or who spend a significant amount of time in congested traffic will likely exceed this estimate. However, those who primarily use the Z4 for relaxed highway cruising may find their annual fuel costs to be somewhat lower.

Real-world expectations

While the EPA provides a standardized testing methodology for fuel economy, real-world results invariably differ. Drivers looking for precise measurements of what they might get should consider third-party fuel economy tracking apps or websites, keeping in mind that individual driving habits have a massive impact on fuel consumption. A careful owner who anticipates traffic and drives at a moderate pace on the highway may even exceed the EPA highway figure of 33 MPG, but more aggressive drivers should expect to fall short of the combined rating.

How it compares

Compared to other roadsters in its class, the Z4 stacks up reasonably well. The Porsche 718 Boxster, with its base 2.0L engine, achieves an EPA-rated 24 MPG combined, placing it a bit behind the Z4. Stepping up to the Boxster S with its more powerful 2.5L pushes the combined figure down further. The Mazda MX-5 Miata, a lighter and less powerful roadster, naturally leads the pack with around 30 MPG combined, but its mission revolves around low weight and nimble handling above all else. In comparison to all Bmw fuel economy data, this particular Z4 does well.

Tips to maximize efficiency

BMW’s Driving Dynamics Control offers various driving modes, including an “Eco Pro” mode. Engaging this mode adjusts the throttle response, shift patterns, and climate control settings to prioritize fuel efficiency. While it may slightly reduce the Z4’s responsiveness, it can make a noticeable difference in fuel consumption, especially during city driving or on long highway stretches.

The turbocharged engine in the Z4 is sensitive to driving style. Aggressive acceleration and frequent high-speed runs will quickly diminish fuel economy. Smooth, gradual acceleration and maintaining a steady speed on the highway are key to maximizing efficiency.

Ensure that your Z4’s tires are properly inflated to the recommended pressure listed on the driver’s side door jamb. Underinflated tires increase rolling resistance, which in turn reduces fuel economy. Check your tire pressures regularly, especially during temperature changes.

Minimize unnecessary weight in the vehicle. Removing extra items from the trunk can improve fuel economy, albeit marginally. It’s a small thing, but every bit counts when trying to squeeze extra miles out of each gallon.

Explore Z4 MPG across all years to see how your model compares against other models. Consider different years to understand the history of Z4 fuel economy.