The 2021 Toyota Mirai XLE gets 74 MPG combined, which is impressive. It’s a hydrogen fuel cell vehicle, meaning that “MPG” actually represents miles per kilogram of hydrogen. The Mirai buyer isn’t solely focused on saving money at the pump, though that’s a nice perk, they’re making a statement about sustainability, embracing cutting-edge technology, and accepting the limitations that come with a still-developing infrastructure.

City and highway performance

The Mirai’s EPA ratings highlight its strengths and weaknesses. The city MPG rating of 76 edges out the highway MPG of 71. This reflects the nature of electric powertrains: they excel in stop-and-go environments where regenerative braking captures energy. On the highway, the Mirai relies more on a steady supply of hydrogen. Regardless of where you’re driving, the experience is very different than driving a car fueled by gasoline.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Toyota Mirai XLE at $709. This figure is calculated based on driving 15,000 miles per year and using national average fuel prices; in this case, the average cost of hydrogen per kilogram. It’s a helpful benchmark, but hydrogen prices fluctuate significantly by region and availability. For Mirai owners, access to hydrogen fueling stations and the cost per kilogram are far more relevant metrics than traditional MPG.

Real-world expectations

While the EPA estimates provide a baseline, real-world fuel economy can vary. Factors influencing the Mirai’s efficiency include driving style, ambient temperature, and the use of accessories like air conditioning and infotainment. Unlike a gasoline car, where aggressive driving directly impacts fuel consumption, the Mirai’s performance is more sensitive to factors affecting the efficiency of the fuel cell itself. Cold weather, in particular, can reduce range because the system requires energy to maintain optimal operating temperatures. Don’t forget to review MIRAI MPG across all years, as slight changes in technology and driving conditions can affect efficiency in each model.

How it compares

Comparing the Mirai to other vehicles based solely on MPG is misleading. It’s more accurate to compare it to other alternative-fuel vehicles, particularly electric vehicles. A Tesla Model 3 Long Range, for example, achieves an EPA-estimated 132 MPGe (miles per gallon equivalent). The Mirai offers a unique advantage: refueling takes only a few minutes, similar to filling a gasoline car, whereas fully charging a Tesla can take significantly longer. Even compared to plug-in hybrids, like the Toyota Prius Prime (133 MPGe combined), the Mirai avoids the need for traditional charging, appealing to those lacking convenient access to charging infrastructure. For a broader view, consider all Toyota fuel economy data.

Tips to maximize efficiency

Gentle acceleration and braking are crucial for maximizing the Mirai’s hydrogen economy. Avoid aggressive driving and anticipate traffic flow to minimize sudden stops. Regenerative braking is your friend; use it to recapture energy and extend your range.

Pre-conditioning the cabin while the car is plugged in (if possible) can conserve onboard hydrogen. Heating or cooling the interior before you unplug reduces the load on the fuel cell when you start driving.

Minimize accessory use, especially climate control. Air conditioning and heating draw power and can significantly impact range, particularly in extreme temperatures. Dress accordingly and use seat heaters to stay comfortable without overtaxing the system.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, reducing overall efficiency. Check your tire pressure regularly and inflate them to the recommended levels.

Plan your routes strategically, taking into account the location of hydrogen fueling stations. Range anxiety is a legitimate concern for Mirai owners, so map out your trips and factor in potential detours or unexpected stops.