28 MPG combined: for the 2017 BMW i8, that number isn’t the whole story. This isn’t a Prius competitor chasing ultimate efficiency. The i8 is a statement, a design icon, and a demonstration of BMW’s engineering prowess. The relatively small hit at the pump is the price of admission for owning a plug-in hybrid sports car that looks like it drove straight out of a sci-fi movie.

City and highway performance

The i8’s 28 MPG rating is split evenly between city and highway driving, according to the EPA’s estimates. What’s unique is how consistently that efficiency presents itself. The electric motor provides immediate torque for city sprints, minimizing the gas engine’s need to kick in frequently. On the highway, the aerodynamic design and efficient 1.5L 3-cylinder engine work in harmony to maintain a respectable MPG figure, even at higher speeds. This consistency is critical for i8 owners who want to enjoy its performance without constantly worrying about the fuel gauge.

Annual fuel cost

The EPA estimates that the 2017 BMW i8 will cost $2,050 per year in fuel. This calculation is based on driving 15,000 miles per year, with a mix of city and highway driving, and using the national average fuel prices. Keep in mind that your actual fuel costs will vary depending on your driving habits, local fuel prices, and how often you use the i8’s plug-in capabilities. Someone who primarily uses the electric motor for short commutes will likely spend far less than this estimate.

Real-world expectations

The real-world fuel economy of the i8 is highly dependent on how diligently owners plug it in. Someone who regularly charges the battery and drives primarily short distances can easily achieve significantly higher effective MPG than the EPA rating. Conversely, those who rely solely on the gasoline engine will likely see MPG figures closer to a traditional sports car. The i8 rewards drivers who are mindful of their energy consumption and take advantage of its hybrid capabilities. This is largely a car bought by those who can spring for higher electric bills.

How it compares

Compared to dedicated hybrid models, the i8’s 28 MPG might seem unimpressive. A Toyota Prius, for example, achieves over 50 MPG combined. However, the Prius isn’t exactly cross-shopped against the i8. A more relevant comparison might be to other performance vehicles. A Porsche 911 Carrera, while offering significantly more power, achieves around 21 MPG combined. Even a sporty sedan like the BMW 340i gets around 26 MPG combined. In this context, the i8’s fuel economy is a notable achievement, offering a blend of performance and efficiency that few other cars can match. Also view all Bmw fuel economy data to compare similar models.

Tips to maximize efficiency

The most impactful way to improve the i8’s fuel economy is to consistently charge it. Make it a habit to plug it in whenever it’s parked at home or work. Maximizing the all-electric range will dramatically reduce your gasoline consumption and save you money at the pump.

Take advantage of the i8’s driving modes. Select “Eco Pro” mode when you’re not in a hurry. This mode optimizes the powertrain for efficiency, softens throttle response, and encourages regenerative braking. You’ll be surprised how much further you can go on a single charge or tank of gas.

Light acceleration and smooth braking are key to maximizing efficiency in any vehicle, but it’s especially true for hybrids. Avoid aggressive driving habits and anticipate traffic flow to minimize unnecessary energy usage. Gentle driving will allow the electric motor to do more of the work.

Keep an eye on your tire pressure. Properly inflated tires reduce rolling resistance, improving fuel economy. Check your tire pressure regularly and inflate them to the recommended levels found on the doorjamb sticker. You can also find more I8 MPG across all years for tire tips.

Consider installing a level 2 charger at home. This will significantly reduce charging times compared to a standard wall outlet, making it easier and more convenient to keep the i8’s battery topped up. This encourages more frequent use of the electric motor and further reduces reliance on gasoline.