2019 Hyundai Ioniq Electric vs. 2019 Toyota Mirai

Detailed Review, Specifications & Comparison

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Both the Ioniq Electric 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 cross-path warning and driver alert monitors.


The Ioniq Electric 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 Electric’s corrosion warranty is 2 years longer than the Mirai’s (7 vs. 5 years).


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.


As tested in Car and Driver the Hyundai Ioniq Electric is faster than the Toyota Mirai:




Zero to 30 MPH

3 sec

3.1 sec

Zero to 60 MPH

8.6 sec

9.4 sec

Zero to 80 MPH

15.4 sec

17.2 sec

Zero to 100 MPH

27.9 sec

34.2 sec

Passing 30 to 50 MPH

3.4 sec

3.9 sec

Passing 50 to 70 MPH

5.3 sec

6.3 sec

Quarter Mile

16.7 sec

17.2 sec

Speed in 1/4 Mile

83 MPH

80 MPH

Fuel Economy and Range

On the EPA test cycle the Ioniq Electric gets better fuel mileage than the Mirai (150 city/122 hwy vs. 67 city/67 hwy MPGe).

Brakes and Stopping

The Ioniq Electric stops shorter than the Mirai:


Ioniq Electric



60 to 0 MPH

124 feet

130 feet

Motor Trend

Suspension and Handling

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

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

The Ioniq Electric 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 Electric is 1 inch wider in the front and 1.1 inches wider in the rear than on the Mirai.

The Ioniq Electric handles at .81 G’s, while the Mirai pulls only .74 G’s of cornering force in a Motor Trend skidpad test.

The Ioniq Electric executes Motor Trend’s “Figure Eight” maneuver quicker than the Mirai (28 seconds @ .59 average G’s vs. 28.8 seconds @ .57 average G’s).

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


The Hyundai Ioniq Electric may be more efficient, handle and accelerate better because it weighs about 900 pounds less than the Toyota Mirai.

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

The design of the Hyundai Ioniq Electric amounts to more than styling. The Ioniq Electric 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 Electric get better fuel mileage.

As tested by Car and Driver while at idle, the interior of the Ioniq Electric is quieter than the Mirai (34 vs. 36 dB).

Passenger Space

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

The Ioniq Electric has standard seating for 5 passengers; the Mirai can only carry 4.

The Ioniq Electric has 10.5 cubic feet more passenger volume than the Mirai (96.2 vs. 85.7).

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


The power windows standard on both the Ioniq Electric and the Mirai have locks to prevent small children from operating them. When the lock on the Ioniq Electric 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 Electric offers optional adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The Mirai doesn’t offer cornering lights.


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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