2021 Toyota Mirai II Dimensions, Size & Specs

The Toyota Mirai II has a curb weight of approximately 1900 kg (4189 lbs) and a maximum weight of 2415 kg (5325 lbs). These weight figures reflect the added mass from the vehicle's hydrogen fuel cell system, high-pressure hydrogen tanks, and associated components compared to conventional gasoline cars. While the weight is relatively high for a sedan, Toyota has engineered the Mirai II with a focus on weight distribution and chassis tuning to maintain dynamic handling. The fuel efficiency benefits of hydrogen fuel technology can offset concerns related to heavier weight, offering smooth, quiet driving with zero emissions. However, the energy density and weight of hydrogen components do influence overall mass, impacting acceleration and range characteristics relative to similarly sized traditional vehicles.

The Toyota Mirai II features a ground clearance of 150 mm (5.9 inches), which is standard for many sedans designed primarily for on-road driving. This moderate ride height strikes a balance between providing sufficient clearance to navigate common urban obstacles like speed bumps and mild road irregularities while maintaining a low center of gravity for improved stability and handling. Though it is not designed for off-road conditions, the ground clearance allows comfortable daily driving in city environments and on highways. However, drivers should exercise caution when encountering steep ramps, uneven terrain, or deep potholes as the low clearance limits rugged terrain capability.

The Toyota Mirai II comes equipped with rim sizes ranging from 8.0J x 19 inches to 8.5J x 20 inches, paired with tires sized 235/55 R19 and 245/45 R20 respectively. The 19-inch tires with a taller sidewall provide a slightly cushioned ride, absorbing minor road imperfections, while the lower profile 20-inch tires offer enhanced grip and sharper handling characteristics, contributing to a sportier driving experience. These wheel and tire combinations balance comfort, aesthetics, and performance needs for a large hydrogen fuel-cell sedan. The careful tire engineering also supports the Mirai’s stability and ride comfort while managing the additional weight imposed by the hydrogen system.

Yes, the Toyota Mirai II fits comfortably in a standard residential garage. With a length of 4975 mm (195.9 inches), a width of 1885 mm (74.2 inches), and a height of 1480 mm (58.3 inches), it falls within typical garage dimension allowances. Most single-car garages have a clearance length of approximately 5.5 meters (18 feet) and a width of at least 2.4 meters (7.9 feet), so the Mirai II's dimensions allow for adequate room around the vehicle for opening doors and maneuvering. It's important to consider additional space for items stored in the garage, but overall the Mirai II’s size is suitable for typical garage parking setups used in many households.

While specific interior volume figures for the Toyota Mirai II are not provided here, its large exterior dimensions, especially the extended length of nearly 5 meters, suggest ample cabin space for passengers and cargo. The 2021 Mirai II is designed as a high-tech hydrogen fuel cell sedan with a focus on comfort and futuristic design, likely offering roomy seating for front and rear occupants. Compared to typical midsize sedans, which often measure shorter in length and may have less rear legroom, the Mirai II should provide a more spacious feel. However, due to the integration of hydrogen technology, some space might be allocated to equipment such as fuel tanks and battery systems, which can influence trunk or underfloor storage.

Compared to its predecessor, the first-generation Toyota Mirai, which measured approximately 4890 mm (192.5 inches) in length, about 1815 mm (71.5 inches) in width, and had a curb weight near 1850 kg (4078 lbs), the Mirai II is longer by around 85 mm (3.3 inches), wider by roughly 70 mm (2.8 inches), and slightly heavier by about 50 kg (110 lbs). These increases indicate Toyota’s effort to create a more spacious, aerodynamic, and comfortable sedan with improved structural integrity for the newer Mirai II. The added width and length contribute to a more aggressive and dynamic design stance, while the modest weight gain reflects the advanced hydrogen fuel cell technology upgrades, larger battery packs, and chassis improvements.

The Toyota Mirai II's length of 4975 mm (195.9 inches), width of 1885 mm (74.2 inches), and height of 1480 mm (58.3 inches) position it among the larger hydrogen-powered and electric luxury sedans on the market. For comparison, the Hyundai Nexo (another hydrogen fuel cell SUV) is shorter and narrower but taller due to its SUV shape, while electric sedans like the Tesla Model S are slightly shorter (about 4970 mm) but narrower (1963 mm wide including mirrors). The Mirai II’s size delivers spacious interiors on par or exceeding many competitors, coupled with its unique hydrogen powertrain. Its significant weight (1900 kg/4189 lbs) reflects its fuel cell technology and is comparable to electric sedans with large battery packs.

The Toyota Mirai II is configured as a four-door sedan with seating for five passengers, which is standard for midsize luxury sedans. While exact cargo volume figures are not provided, the overall vehicle length of 4975 mm (195.9 inches) and the vehicle's engineering focus on hydrogen fuel cell technology suggest it offers a usable trunk space that balances storage needs with housing hydrogen tanks securely. Compared to traditional internal combustion engine vehicles, some cargo capacity might be sacrificed due to the positioning of hydrogen tanks under the rear seats and floor. Nevertheless, the Mirai II aims to provide sufficient trunk room for everyday use such as luggage and groceries.

The Toyota Mirai II uses 8.0J x 19-inch and 8.5J x 20-inch rims, fitted with 235/55 R19 and 245/45 R20 tires respectively. These are premium-sized wheels and tires, offering both aesthetic appeal and a balance between ride comfort and handling performance. Larger wheels with low profile tires (20-inch) typically require more careful maintenance due to increased exposure to road hazards and potentially higher replacement costs. The tire sizes are widely available but Porsche wheel specifications, meaning drivers should ensure proper tire replacement and rotation to maintain balance and prolong tire life. Regular maintenance ensures optimized traction, safety, and fuel efficiency given the Mirai’s high-tech drivetrain.