Toyota has announced the provisional performance range for its Toyota Mirai hydrogen fuel-cell electric vehicle, which will make its market debut in the United States in the third quarter of this year.

The Mirai has an EPA-estimated driving range rating of 502 km (312 miles) on a single fill of hydrogen, which the automaker states gives the FCV the longest driving range of any Zero Emission Vehicle on the market. Initially, a claimed range of 483 km per fill was being touted by the automaker, but nothing like going past the 500 km-mark (or 300 mile, if you will) for bragging rights.

The four-door, mid-size sedan features a fuel cell system – the car is driven by an electric motor, with electricity for it created on demand by fusing hydrogen and oxygen to produce the required voltage. Emissions is limited to just water vapour in the process.

The Mirai’s fuel cell stack is located under the driver and front passenger seats and offers 3.1 kW/L of power output density, and other figures include a total output of 153 hp, a 0-100 km/h time of 9.0 seconds and a 40-60 km/h acceleration time of 3.0 seconds.

The automaker is set on pushing the Mirai in a big way in the States, and there are plenty of carrots and reassurances for adopters of the new tech. The Mirai comes with an eight-year/160,000 km warranty on key fuel cell vehicle components, including the FC stack and power control unit, FC hydrogen tanks, hybrid battery pack and ECU, FC air compressor, boost converter and ECU, hybrid control module (power management control module) and hydrogen fueling ECU.

Elsewhere, customers are set to enjoy three years’ worth of complimentary fuel, no-cost scheduled maintenance for three years or 56,000 km (whichever comes first) as well as three years of complimentary Safety Connect and Entune services, including a hydrogen station finder app and 24/7 customer call support.