The 2015 BMW Z4 sDrive35i achieves 19 MPG combined. While this isn’t exceptional, fuel economy is often not a primary consideration for drivers wanting a stylish, engaging roadster. This car is more about making a statement, rewarding yourself, and enjoying a weekend escape.

City and highway performance

The EPA estimates the Z4 sDrive35i gets 17 MPG in the city and 23 MPG on the highway. The lower city MPG reflects the frequent stopping and starting of urban driving, where the Z4’s turbocharged engine idles more and accelerates from a standstill. The highway MPG, While not great, is more acceptable. The seven-speed automatic transmission helps optimize fuel usage at cruising speeds, but the engine’s available power may tempt you to use it, which reduces fuel economy. The official figures provide a reasonable baseline for trip planning, but aggressive driving will empty the tank faster.

Annual fuel cost

The EPA estimates the 2015 BMW Z4 sDrive35i will cost about $3,050 per year for fuel. This is based on 15,000 miles driven annually and using the national average fuel prices. This is only an estimate. Your fuel costs will vary based on your driving style, location (fuel prices differ by state or region), and the specific fuel grade you use. Still, $3,050 offers a useful point of comparison when estimating total ownership costs. Z4 shoppers generally understand and accept this cost.

Real-world expectations

While the EPA estimates are helpful, Z4 drivers know that real-world MPG can vary. In relaxed, open-road conditions, 23 MPG on the highway is achievable. However, aggressive acceleration, frequent gear changes with the paddle shifters, and the desire to hear the engine will increase fuel consumption. City driving rarely reaches the EPA’s 17 MPG in many cities because of heavy traffic. Owners should expect to average around 16-21 MPG in mixed driving, with spirited driving bringing the average closer to the lower end.

How it compares

The 2015 Z4’s fuel economy is similar to other cars in its class, and sometimes slightly lower than competing brands. A 2015 Porsche Boxster with its base 2.7L engine gets around 22 MPG combined. The Mercedes-Benz SLK350, with a 3.5L V6, has similar MPG to the Boxster. The Audi TT, with a smaller turbocharged 2.0L engine, gets better fuel economy at around 26 MPG combined, but doesn’t have the Z4’s inline-six sound and feel. This comparison shows the trade-off: the Z4 prioritizes performance and driving experience over fuel efficiency. The Z4 also prioritizes inline-6 feel and sounds over all Bmw fuel economy data. Used models’ prices mean more shoppers are looking at Z4 MPG across all years. For the enthusiast, this is often an acceptable compromise for the Z4’s unique character.

Tips to maximize efficiency

One way to improve fuel economy is to drive more smoothly. Avoid quick acceleration and hard braking, and anticipate traffic to maintain a more consistent speed. The Z4’s responsive engine can tempt you to drive aggressively, but you can see improvements with some discipline.

Proper tire inflation is surprisingly important for fuel efficiency. Underinflated tires increase rolling resistance, making the engine work harder and wasting fuel. Check your tire pressures regularly and inflate them to the levels on the door jamb sticker.

Reducing extra weight in your car can help. Remove unnecessary items from the trunk or passenger area. Extra weight requires more energy to move, which uses more fuel. Every little bit helps.

Use the Z4’s drive mode selector wisely. When fuel economy is important, select “Comfort” or “Eco Pro” mode, which adjusts engine mapping and throttle response to favor efficiency over performance. “Sport” mode is fun, but it increases fuel consumption.