74 MPG combined doesn’t tell the whole story of the 2023 Toyota Mirai LE. This isn’t gasoline; it’s hydrogen, and that figure represents the equivalent efficiency of a traditional internal combustion engine vehicle. The Mirai LE isn’t for everyone. It’s for a specific buyer: one who prioritizes near-zero emissions, embraces cutting-edge technology, and lives within range of a hydrogen refueling station. For this buyer, the efficiency is important, often outweighing range anxiety and infrastructure limitations.

City and highway performance

The EPA estimates the Mirai LE achieves 76 MPG in the city and 71 MPG on the highway. This slight edge in city driving is typical for electric-drive vehicles, including fuel cell vehicles like the Mirai. The electric motor provides instant torque, which is beneficial in stop-and-go traffic. Highway driving, while still efficient, requires sustained power output, which draws slightly more energy from the hydrogen fuel cell system. These figures remain impressive considering the size and weight of the car as well as the instant torque available from its electric motor.

Annual fuel cost

The EPA estimates that the 2023 Toyota Mirai LE will cost $709 per year to “fuel.” This figure is based on driving 15,000 miles annually, assuming a national average price for hydrogen. However, it’s crucial to remember that hydrogen prices vary significantly by region and station. This calculation provides a standardized benchmark, but real-world costs can fluctuate. Hydrogen pricing will fluctuate more wildly than mature technologies like gasoline or diesel. Watch local hydrogen prices to get a more accurate gauge of running costs in your specific area when shopping for a MIRAI MPG across all years.

Real-world expectations

While the EPA provides valuable estimates, real-world efficiency often varies. Driving style, weather conditions, and terrain all play a role. Aggressive acceleration and frequent use of climate control can decrease efficiency. Conversely, smooth, consistent driving and moderate temperatures can improve it. Owners may find their average “MPG” fluctuating, but it should consistently remain high. The actual miles driven on a “tank” of hydrogen are important. This vehicle is range-constrained so the “miles per tank” is a more critical metric than the hydrogen “MPG.”

How it compares

Direct comparisons to gasoline vehicles are limited. A more relevant comparison is to other zero-emission vehicles, particularly battery electric vehicles (BEVs). The Hyundai Kona Electric, for example, boasts an EPA-estimated 120 MPGe combined. The Tesla Model 3 RWD achieves 132 MPGe combined. Hydrogen refueling is significantly faster than battery charging, a key advantage for some buyers who might find all Toyota fuel economy data compelling, and it avoids battery-related impacts to the Earth that trouble some environmentally-conscious buyers. The Honda Clarity Fuel Cell, prior to its discontinuation, was rated at 68 MPGe. The Mirai surpasses it. Buyers who prioritize zero tailpipe emissions and quick refueling will find the Mirai’s efficiency attractive even compared to BEVs.

Tips to maximize efficiency

Optimize your driving style for efficiency. Gentle acceleration and smooth braking help conserve energy and extend your hydrogen supply. Avoid aggressive driving and try to maintain a consistent speed, especially on the highway.

Use the regenerative braking feature effectively. This system captures energy during deceleration and recharges the battery, extending your driving range. Learn to anticipate stops and coast whenever possible to maximize regeneration.

Minimize auxiliary power consumption. Reduce the use of climate control, especially in extreme temperatures. Heated seats and steering wheels consume less energy than the HVAC system, so use those features when appropriate.

Plan your trips carefully, taking advantage of hydrogen refueling stations along your route. Monitor your remaining range and strategically replenish fuel to avoid running low in areas with limited infrastructure. Apps and websites can help you locate hydrogen stations and check their real-time availability.

Keep your tires properly inflated. Underinflated tires increase rolling resistance, reducing efficiency. Check your tire pressure regularly and inflate them to the recommended level, which can be found on a sticker inside the driver’s side doorjamb.