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The Mirai’s optional pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Volt doesn’t offer pre-crash pretensioners.
For enhanced safety, the front and rear (child comfort guides) seat shoulder belts of the Toyota Mirai are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The Chevrolet Volt doesn’t offer height-adjustable seat belts.
The Mirai’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The Volt doesn’t offer a driver alert monitor.
Compared to conventional galvanized steel, the Mirai’s steel fuel tank with a plastic liner will contain the fuel and prevent leaking better than the Chevrolet Volt.
Both the Mirai and the Volt have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, front wheel drive, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights and rearview cameras.
The Toyota Mirai weighs 532 to 556 pounds more than the Chevrolet Volt. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.
Toyota’s powertrain warranty covers the Mirai 5 years and 40,000 miles longer than Chevrolet covers the Volt. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 10 years or 100,000 miles. Coverage on the Volt ends after only 5 years or 60,000 miles.
The Mirai’s corrosion warranty is unlimited miles longer than the Volt’s (unlimited vs. 100,000 miles).
Toyota pays for scheduled maintenance on the Mirai for 1 year and 11000 miles longer than Chevrolet pays for maintenance for the Volt (3/35000 vs. 2/24,000).
A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without a vehicle while it’s being repaired. Consumer Reports rates the Mirai’s reliability 38 points higher than the Volt.
From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Toyota vehicles are more reliable than Chevrolet vehicles. Consumer Reports ranks Toyota second in reliability. Chevrolet is ranked 23rd.
The U.S. Environmental Protection Agency (EPA) certifies the Toyota Mirai as a “Zero Emissions Vehicle” (ZEV). The Chevrolet Volt is only certified to “Partial Zero Emissions Vehicle” (PZEV) standards.
For better stopping power the Mirai’s brake rotors are larger than those on the Volt:
For a smoother ride and more stable handling, the Mirai’s wheelbase is 3.4 inches longer than on the Volt (109.5 inches vs. 106.1 inches).
As tested by Car and Driver while at idle, the interior of the Mirai is quieter than the Volt Premier (36 vs. 37 dB).
The Mirai has .7 inches more front headroom, .4 inches more front legroom, 1 inch more rear headroom, 1.1 inches more rear hip room and .3 inches more rear shoulder room than the Volt.
With its sedan body style, valet key and remote trunk release lockout, the Mirai offers cargo security. The Volt’s hatchback body style, non-lockable folding seat and non-lockable remote release defeat cargo security.
A standard locking glovebox (which can’t be accessed with the valet key) keeps your small valuables safer in the Mirai. The Volt doesn’t offer locking storage for small valuables.
The Mirai uses gas struts to support the hood for easier service access. The Volt uses a prop rod to support its heavy hood. It takes two hands to open the hood and set the prop rod, the prop rod gets in the way during maintenance and service, and the prop rod could be knocked out, causing the heavy hood to fall on the person maintaining or servicing the car.
When two different drivers share the Mirai, the memory system makes it convenient for both. Each setting activates different, customized memories for the driver’s seat position, steering wheel position and outside mirror angle. The Volt doesn’t offer a memory system.
The Mirai’s standard easy entry system raises the steering wheel and glides the driver’s seat back, making it easier for the driver to get in and out. The Volt doesn’t offer an easy entry system.
The Mirai’s front and rear power windows all open or close with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside of the car. The Volt’s passenger windows don’t close automatically.
The Mirai’s rain-sensitive wipers adjust their speed and turn on and off automatically based on the amount of rainfall on the windshield. This allows the driver to concentrate on driving without constantly adjusting the wipers. The Volt’s manually variable intermittent wipers have to be constantly adjusted.
The Mirai’s standard outside mirrors include heating elements to clear off the mirrors for better visibility. Chevrolet charges extra for heated mirrors on the Volt.
When the Mirai is put in reverse, both rearview mirrors tilt from their original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirrors into their original positions. The Volt’s mirrors don’t automatically adjust for backing.
The Mirai has standard automatic dimming rear and side view mirrors which automatically darken quickly when headlights shine on them, keeping following vehicles from blinding or distracting the driver. The Volt offers an automatic rear view mirror, but its side mirrors don’t dim.
The Mirai has a standard heated steering wheel to take the chill out of steering on extremely cold winter days before the car heater warms up. A heated steering wheel costs extra on the Volt.
The Mirai’s standard dual zone air conditioning allows the driver and front passenger to choose two completely different temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front passenger as comfortable as possible. The Volt doesn’t offer dual zone air conditioning.
Both the Mirai and the Volt offer rear vents. For greater rear passenger comfort, the Mirai has standard rear air conditioning vents to keep rear occupants cool in summer or warm in winter. The Volt doesn’t offer rear air conditioning vents, only heat vents.
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