65 MPG combined is an extraordinary figure, especially for a vehicle the size of the 2022 Toyota Mirai Limited. This isn’t just about fuel economy; it runs on hydrogen, emitting only water vapor. Owners are motivated by factors far beyond saving money at the pump; they see the Mirai as a statement about sustainability and technological innovation. This is a car for early adopters, for those who are willing to embrace alternative fuels despite the infrastructure challenges that still exist in many parts of the country.

City and highway performance

The EPA numbers reveal the Mirai’s balanced performance across different driving environments. The city MPG is rated at 67, slightly better than the highway rating of 64 MPG. This reflects how hydrogen fuel cells operate, which thrive in stop-and-go conditions. Unlike gasoline cars that waste energy idling, the Mirai’s fuel cell system can maintain efficiency even when power demands fluctuate. Highway driving is still very efficient, but the steady-state nature of open-road cruising doesn’t offer the same opportunities for regenerative braking and system optimization as city driving.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2022 Toyota Mirai Limited to be $808. This calculation is based on driving 15,000 miles per year and using the national average price of hydrogen fuel. Of course, the real-world cost can vary considerably depending on local hydrogen prices, which are currently limited to California and a few other select regions. Factors like driving style, climate, and terrain can all play a role in the actual amount spent on hydrogen. However, the $808 figure provides a useful benchmark for comparing the Mirai’s running costs to those of conventional gasoline vehicles and even other electric cars.

Real-world expectations

While the EPA’s 65 MPG combined rating is a reliable figure, real-world fuel economy can vary. MIRAI MPG across all years is often contingent on how smoothly drivers operate this car. Brisk acceleration will impact the fuel cell’s efficiency. The availability of hydrogen refueling stations is also a crucial factor. Anyone considering a Mirai should carefully evaluate the availability and prices of hydrogen in their area to ensure it meets their transportation needs. The vehicle also has a battery that is charged by both regenerative braking and the fuel cell system, impacting the consumption of hydrogen directly.

How it compares

Comparing the Mirai to other vehicles requires a shift in perspective. It doesn’t neatly align with gasoline cars or even battery-electric vehicles (BEVs). The Toyota RAV4 Hybrid, for example, achieves an EPA combined rating of 40 MPG, highlighting the Mirai’s superior efficiency on a mile-per-gallon equivalent basis. However, the RAV4 Hybrid benefits from widespread gasoline availability and a lower purchase price.

On the BEV side, the Tesla Model 3 Long Range achieves an EPA combined equivalent of 132 MPGe (miles per gallon equivalent). This translates into lower energy costs per mile, but the Mirai boasts a refueling time measured in minutes, unlike the Model 3’s charging times that can take considerably longer. Even all Toyota fuel economy data shows no vehicle with the unique powertrain or goals of the Mirai. The Honda Clarity Fuel Cell (when available) offered a somewhat similar experience, but with its discontinuation, the Mirai effectively has no direct competitors in the fuel cell segment.

Tips to maximize efficiency

Smooth and steady acceleration is key to maximizing hydrogen fuel economy in the Mirai. Avoid aggressive starts and stops, as these actions demand more power from the fuel cell and drain the battery more quickly. Anticipate traffic flow and maintain a consistent speed whenever possible.

Use the Mirai’s regenerative braking system effectively. By gently lifting off the accelerator, you can capture kinetic energy and convert it back into electricity, helping to recharge the battery and reduce hydrogen consumption. Familiarize yourself with the different levels of regenerative braking available and choose the setting that best suits your driving style.

Pre-conditioning the cabin temperature while the Mirai is plugged in can significantly reduce energy consumption while driving. By using grid power to heat or cool the interior before you leave, you lessen the load on the fuel cell and battery once you’re on the road, preserving hydrogen for propulsion.

Proper tire inflation is critical for optimal fuel economy. Check your tire pressure regularly and inflate them to the recommended levels, which can be found on the doorjamb sticker. Under-inflated tires create more rolling resistance, which increases energy consumption and reduces range.

Minimize accessory use, as air conditioning, heating, and other electronic devices consume energy and reduce fuel economy. Use these features sparingly and only when necessary to conserve hydrogen. When possible, use seat heaters to conserve on cabin heat energy consumption.