27 MPG combined won’t win any awards for fuel efficiency, but it’s a respectable figure for the 2020 BMW i8 Roadster. This isn’t a typical commuter car or a family vehicle; it’s a futuristic statement piece, a plug-in hybrid roadster that prioritizes head-turning style and a unique driving experience. Buyers who choose this vehicle are willing to pay more for its design and technology, including its fuel consumption.

City and highway performance

The EPA estimates the 2020 BMW i8 Roadster at 26 MPG in the city and 29 MPG on the highway. This narrow range suggests the i8 performs consistently across different driving environments. While those numbers might not seem great compared to economy cars, consider the i8’s purpose: to deliver sports-car thrills with less gas. The small 1.5-liter 3-cylinder engine, working with the electric motor, provides fast acceleration and a distinctive sound, while consuming fuel at a rate that won’t bankrupt its owner. Many owners rely heavily on electric-only driving, which improves fuel economy in city driving, reducing it to almost zero during shorter trips.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,150 for the 2020 BMW i8 Roadster. This figure is based on driving 15,000 miles per year and using national average fuel prices. Remember that this is just an estimate; your actual fuel costs will vary depending on your driving habits, local fuel prices, and how much you use the i8’s electric driving mode. Owners who primarily drive short distances and recharge the battery can expect to spend less on fuel than those who primarily rely on the gasoline engine.

Real-world expectations

While the EPA estimates provide a useful benchmark, real-world fuel economy often differs. The 2020 BMW i8 Roadster’s performance is sensitive to driving style and charging habits. Fast acceleration will quickly deplete the battery and force the gasoline engine to work harder, reducing fuel economy. However, using the electric driving mode as much as possible, particularly in stop-and-go traffic, can significantly improve fuel efficiency. Owners report achieving MPG figures well above the EPA estimates, especially if they have convenient access to charging at home or work. Explore I8 MPG across all years for owner-submitted data.

How it compares

The BMW i8 Roadster is unique, mixing sports-car qualities, hybrid technology, and a striking design. Direct fuel economy comparisons are hard because few vehicles offer such a combination. A Porsche 911, for instance, offers better performance but at the cost of lower fuel economy; the 2020 911 Carrera S achieves around 20 MPG combined. A Tesla Model S Long Range offers similar performance and zero-emission capability, but lacks the i8’s striking design and open-top experience. Traditional hybrid sports cars often lack performance or design flair. For those concerned with overall BMW fuel economy, review all Bmw fuel economy data. The i8’s blend of style, technology, and reasonable fuel economy is its strong point.

Tips to maximize efficiency

Use the i8’s driving modes. The “Eco Pro” mode optimizes the powertrain for maximum efficiency by limiting throttle response and reducing energy consumption for other vehicle systems. While it might not provide the most exciting driving experience, it can extend the range and improve fuel economy, especially on longer trips.

Plan your charging. Make electric power a priority by charging the i8’s battery whenever possible. This reduces your need for the gasoline engine and allows you to save money with off-peak electricity rates.

Gentle acceleration and braking are important. Avoid aggressive acceleration, which depletes the battery and makes the gasoline engine work harder. Anticipate stops and brake gently to maximize regenerative braking, which recovers energy and recharges the battery.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which reduces fuel economy and affects handling. Regularly check your tire pressure and inflate them to the recommended levels.