28 MPG combined is respectable for the 2024 BMW Z4 sDrive30i, but it’s not the main reason people buy this car. It’s not just a way to get from place to place. it’s a stylish two-seater convertible for weekend getaways and enjoying backroads. The fuel economy is good enough to not feel guilty on those drives, which matters to Z4 buyers, but performance and looks are more important to them. They’re trading ultimate MPG for the fun of driving with the top down and the BMW experience.

City and highway performance

The Z4’s EPA ratings are 25 MPG in the city and 33 MPG on the highway. The city figure reflects urban driving, where the engine works harder, and idles more. The higher highway MPG shows the Z4’s efficient cruising. At steady speeds, the 2.0L turbocharged engine finds a comfortable rhythm, stretching a gallon of fuel. The eight-speed automatic transmission also helps, keeping the engine in its best range for performance and efficiency.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2024 BMW Z4 sDrive30i at $2,050. This is based on driving 15,000 miles per year and using average national fuel prices when calculated. Remember this is just an estimate, your actual fuel costs depend on driving habits, fuel type, and local fuel prices. Someone who mainly drives short distances in the city will probably exceed that $2,050, while someone who mostly takes long highway trips might spend less.

Real-world expectations

The EPA provides a useful benchmark, though real-world MPG often differs. Aggressive driving, frequent acceleration, and neglecting maintenance can hurt fuel economy. Many Z4 owners find they can get numbers close to the EPA estimates with careful driving. The Z4’s light weight and responsive engine help it be efficient when driven conservatively. Expect between the high teens and low 30s depending on how you drive.

How it compares

The Z4’s fuel economy is in the middle of its class. The Porsche 718 Boxster with its base 2.0L engine gets a similar 26 MPG combined. The Audi TT Roadster, no longer in production but still a popular used option, gets a slightly better 26 MPG combined from its 2.0L engine. These numbers show the Z4 isn’t a fuel-sipping champion, or a gas guzzler. The slightly better numbers of the now-discontinued TT Roadster probably don’t sway Z4 buyers, since the older Audi lacks the feel and technology of the BMW.

Tips to maximize efficiency

Use the Z4’s drive mode settings. “Eco Pro” mode optimizes the engine and transmission for efficiency, softening throttle response and encouraging earlier upshifts. This mode isn’t for spirited driving, but it’s good for everyday commuting.

Make sure your tires are inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure and keep it at the pressure recommended on the tire placard.

Avoid idling. Modern engines use fuel when stopped. If you’ll be stopped for more than a minute or two, turn off the engine.

Use cruise control on the highway. Constant speed minimizes acceleration and deceleration, improving fuel efficiency, especially on long trips.

Keep up with maintenance. A well-maintained engine runs better. Regular oil changes, air filter replacements, and spark plug checks can improve fuel economy. Consider browsing all Bmw fuel economy data, or Z4 MPG across all years.