Sixty-seven MPG combined is the headline for the 2019 Toyota Mirai, but it’s misleading if you think of it in terms of gasoline. This isn’t a hybrid or a plug-in hybrid; it’s a hydrogen fuel cell vehicle, meaning that 67 MPGe (miles per gallon equivalent) reflects its efficiency when running on hydrogen. The Mirai appeals to someone deeply committed to zero-emission driving, technologically curious, and living in an area with a developed (or developing) hydrogen refueling infrastructure. For these drivers, the Mirai offers an alternative to battery-electric vehicles, with a refueling time comparable to gasoline cars and a similar overall range, assuming fuel availability.

City and highway performance

The EPA rates the 2019 Toyota Mirai at 67 MPGe in the city and 67 MPGe on the highway. This consistency stems from the nature of the fuel cell powertrain. Unlike a gasoline engine that operates at varying efficiencies depending on load and speed, the fuel cell maintains a consistent level of efficiency whether it’s navigating stop-and-go traffic or cruising at highway speeds. As long as the system is operating within its optimal range, the Mirai sips hydrogen at a steady rate. This also reflects that the Mirai’s electric motor is particularly well-suited for urban environments, using regenerative braking to recapture energy and further enhance efficiency.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Toyota Mirai at exactly $784. This calculation is based on driving 15,000 miles per year, with a specified percentage split between city and highway driving, using the national average hydrogen fuel prices at the time of the calculation. While the actual cost may vary depending on individual driving habits and regional hydrogen prices, this figure provides a benchmark for comparing the Mirai’s running costs to those of gasoline-powered, hybrid, and battery-electric vehicles. Fluctuations in hydrogen prices heavily influence this number, and actual costs may vary considerably.

Real-world expectations

While the EPA estimates are a useful starting point, real-world fuel economy can differ. Factors like driving style, terrain, and weather conditions can all impact the Mirai’s efficiency. Aggressive acceleration and frequent hard braking will deplete the hydrogen tank more quickly, as will consistent high-speed driving. However, the Mirai is generally predictable in its consumption, with most drivers reporting figures close to the EPA estimates. The biggest influence, of course, is the availability and price of hydrogen. If you can’t find hydrogen easily, the car is useless. You can review MIRAI MPG across all years for a broader understanding.

How it compares

Compared to other zero-emission vehicles, the Mirai occupies a unique space. It’s not directly comparable to battery electric vehicles like the Tesla Model 3 Long Range (132 MPGe combined) or the Chevy Bolt (118 MPGe combined). Those BEVs have different considerations: charging time and range anxiety being primary concerns. The Hyundai Nexo, as another hydrogen fuel cell vehicle, is the Mirai’s closest competitor, achieving 61 MPGe combined in Limited trim, making the Mirai a slightly more efficient choice on paper. For drivers considering traditional gasoline-powered vehicles, the contrast is stark. A comparable luxury sedan like the Lexus ES 350 achieves around 33 MPG combined, highlighting the significant fuel savings potential of the Mirai for those who prioritize emissions-free driving, especially when you view all Toyota fuel economy data.

Tips to maximize efficiency

The 2019 Toyota Mirai is already quite efficient. However, mindful driving habits will help you get the most out of each kilogram of hydrogen. Gradual acceleration and anticipation of traffic flow allow a consistent speed, minimizing energy wasted on unnecessary acceleration and deceleration.

Use regenerative braking. By gently lifting off the accelerator, you can slow the vehicle while recapturing energy to recharge the small battery pack that supplements the fuel cell system. This not only extends your range but also reduces wear on the conventional brakes.

Minimize accessory use, especially the air conditioning. While modern climate control systems are relatively efficient, they still draw power from the fuel cell system, reducing overall MPGe. Use the climate control sparingly, or consider using the seat heaters in cooler weather for localized warmth.

Proper tire inflation is essential for maximizing fuel economy in any vehicle. Check your tire pressure regularly and maintain it at the recommended level, which can be found on a sticker inside the driver’s side doorjamb. Underinflated tires increase rolling resistance, leading to decreased efficiency.