2019 Hyundai Ioniq Plug-In Hybrid vs. 2019 Toyota Mirai

Detailed Review, Specifications & Comparison

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Safety

Both the Ioniq Plug-In Hybrid and the Mirai have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, front wheel drive, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available crash mitigating brakes, lane departure warning systems, blind spot warning systems, rear parking sensors, rear cross-path warning and driver alert monitors.

Warranty

The Ioniq Plug-In Hybrid comes with a full 5-year/60,000-mile basic warranty, which covers the entire car and includes 24-hour roadside assistance. The Mirai’s 3-year/36,000-mile basic warranty expires 2 years and 24,000 miles sooner.

The Ioniq Plug-In Hybrid’s corrosion warranty is 2 years longer than the Mirai’s (7 vs. 5 years).

Reliability

J.D. Power and Associates’ 2018 Initial Quality Study of new car owners surveyed provide the statistics that show that Hyundai vehicles are better in initial quality than Toyota vehicles. J.D. Power ranks Hyundai third in initial quality, above the industry average. With 22 more problems per 100 vehicles, Toyota is ranked 17th, below the industry average.

J.D. Power and Associates’ 2018 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Hyundai vehicles are more reliable than Toyota vehicles. J.D. Power ranks Hyundai 6th in reliability, above the industry average. With 3 more problems per 100 vehicles, Toyota is ranked 8th.

Fuel Economy and Range

On the EPA test cycle the Ioniq Plug-In Hybrid running on electricity gets better fuel mileage than the Mirai (123 city/114 hwy vs. 67 city/67 hwy MPGe).

Suspension and Handling

For superior ride and handling, the Hyundai Ioniq Plug-In Hybrid has fully independent front and rear suspensions. An independent suspension allows the wheels to follow the road at the best angle for gripping the pavement, without compromising ride comfort. The Toyota Mirai has a rear torsion beam axle, with a semi-independent rear suspension.

The Ioniq Plug-In Hybrid has standard front gas-charged shocks for better control over choppy roads. The Mirai’s suspension doesn’t offer gas-charged shocks.

The Ioniq Plug-In Hybrid has standard front and rear stabilizer bars, which help keep the Ioniq Plug-In Hybrid flat and controlled during cornering. The Mirai’s suspension doesn’t offer a rear stabilizer bar.

The Ioniq Plug-In Hybrid has vehicle speed sensitive variable-assist power steering, for low-effort parking, better control at highway speeds and during hard cornering, and a better feel of the road. The Mirai doesn’t offer variable-assist power steering.

For better handling and stability, the track (width between the wheels) on the Ioniq Plug-In Hybrid is 1 inch wider in the front and 1.1 inches wider in the rear than on the Mirai.

For better maneuverability, the Ioniq Plug-In Hybrid’s turning circle is 2.6 feet tighter than the Mirai’s (34.78 feet vs. 37.4 feet).

Chassis

The Hyundai Ioniq Plug-In Hybrid may be more efficient, handle and accelerate better because it weighs about 750 pounds less than the Toyota Mirai.

The Ioniq Plug-In Hybrid is 1 foot, 4.5 inches shorter than the Mirai, making the Ioniq Plug-In Hybrid easier to handle, maneuver and park in tight spaces.

The design of the Hyundai Ioniq Plug-In Hybrid amounts to more than styling. The Ioniq Plug-In Hybrid has an aerodynamic coefficient of drag of .24 Cd. That is significantly lower than the Mirai (.29) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the Ioniq Plug-In Hybrid get better fuel mileage.

The front grille of the Ioniq Plug-In Hybrid uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The Mirai doesn’t offer active grille shutters.

Passenger Space

Because it has more passenger and cargo room, the EPA rates the Ioniq Plug-In Hybrid a Mid-size car, while the Mirai is rated a Subcompact.

The Ioniq Plug-In Hybrid has standard seating for 5 passengers; the Mirai can only carry 4.

The Ioniq Plug-In Hybrid has 10.5 cubic feet more passenger volume than the Mirai (96.2 vs. 85.7).

The Ioniq Plug-In Hybrid has .6 inches more front headroom, .4 inches more front hip room, 1.8 inches more front shoulder room, .6 inches more rear headroom, 5.6 inches more rear legroom, .5 inches more rear hip room and 1.5 inches more rear shoulder room than the Mirai.

Cargo Capacity

The Ioniq Plug-In Hybrid has a much larger trunk than the Mirai (23 vs. 12.8 cubic feet).

The Ioniq Plug-In Hybrid’s standard rear seats fold to accommodate long and bulky cargo. The Mirai doesn’t offer folding rear seats.

Ergonomics

The power windows standard on both the Ioniq Plug-In Hybrid and the Mirai have locks to prevent small children from operating them. When the lock on the Ioniq Plug-In Hybrid is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The Mirai prevents the driver from operating the other windows just as it does the other passengers.

To help drivers see further while navigating curves, the Ioniq Plug-In Hybrid offers optional adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The Mirai doesn’t offer cornering lights.

Recommendations

The Hyundai Ioniq outsold the Toyota Mirai by almost 9 to one during 2018.

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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