2020 Infiniti Q50 vs. 2020 Kia Stinger

Detailed Review, Specifications & Comparison

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Safety

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/07/14

The Q50 Sport/Red Sport 400’s optional pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Stinger doesn’t offer pre-crash pretensioners.

Over 200 people are killed each year when backed over by motor vehicles. The Q50 (except Pure) offers optional Back-up Collision Intervention that uses rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The Stinger doesn’t offer backup collision prevention brakes.

Both the Q50 and the Stinger have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available all-wheel drive, lane departure warning systems, blind spot warning systems, around view monitors and rear cross-path warning.

Warranty

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The Q50’s corrosion warranty is 2 years and unlimited miles longer than the Stinger’s (7/unlimited vs. 5/100,000).

Engine

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The Q50 3.0t’s standard 3.0 turbo V6 produces 45 more horsepower (300 vs. 255) and 35 lbs.-ft. more torque (295 vs. 260) than the Stinger GT-Line’s standard 2.0 turbo 4-cylinder. The Q50 Red Sport 400’s standard 3.0 turbo V6 produces 35 more horsepower (400 vs. 365) than the Stinger GT’s standard 3.3 turbo V6.

As tested in Consumer Reports the Q50 3.0t is faster than the Stinger GT-Line 2.0 turbo 4-cylinder:

Q50

Stinger

Zero to 30 MPH

2.4 sec

3 sec

Zero to 60 MPH

5.7 sec

7.5 sec

45 to 65 MPH Passing

4.2 sec

4.8 sec

Quarter Mile

14.2 sec

15.8 sec

Speed in 1/4 Mile

103 MPH

93 MPH

Fuel Economy and Range

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/07/14

On the EPA test cycle the Q50 gets better fuel mileage than the Stinger:

Q50

Stinger

RWD

3.0 twin-turbo V6 (300 HP)/Auto

20 city/29 hwy

17 city/25 hwy

3.3 V6/Auto

3.0 twin-turbo V6 (400 HP)/Auto

20 city/26 hwy

n/a

AWD

3.0 twin-turbo V6 (300 HP)/Auto

19 city/27 hwy

17 city/25 hwy

3.3 V6/Auto

3.0 twin-turbo V6 (400 HP)/Auto

19 city/26 hwy

n/a

The Q50 has 4.1 gallons more fuel capacity than the Stinger (20 vs. 15.9 gallons), for longer range between fill-ups.

Brakes and Stopping

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For better stopping power the Q50 Sport/Red Sport 400’s front brake rotors are larger than those on the Stinger:

Q50 Sport/Red Sport 400

Stinger GT-Line

Stinger GT

Front Rotors

14 inches

12.6 inches

13.8 inches

Rear Rotors

13.8 inches

12.4 inches

13.4 inches

The Q50’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs standard on the Stinger GT-Line are solid, not vented.

In an emergency stopping situation, many drivers don’t press the brakes with enough force to stop the vehicle in the shortest distance. The Q50 has a standard brake assist system to detect emergency braking situations (by how hard and how quickly the brake pedal is pressed) and then automatically apply maximum braking immediately in order to help prevent a collision. The Stinger doesn’t offer a brake assist feature.

The Q50 stops much shorter than the Stinger:

Q50

Stinger

70 to 0 MPH

165 feet

182 feet

Car and Driver

60 to 0 MPH

126 feet

132 feet

Consumer Reports

60 to 0 MPH (Wet)

131 feet

142 feet

Consumer Reports

Tires and Wheels

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For better traction, the Q50 Red Sport 400’s tires are larger than the largest tires available on the Stinger (F:245/40R19 & R:265/35R19 vs. F:225/40R19 & R:255/35R19).

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the Q50 can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The Stinger doesn’t offer run-flat tires.

Suspension and Handling

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The Q50 Sport’s optional drift compensation steering can automatically compensate for road conditions which would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The Stinger doesn’t offer drift compensation steering.

Chassis

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To almost totally eliminate engine vibration in the passenger area, the Q50 has liquid-filled engine mounts. The liquid helps further dampen engine harshness. The Stinger uses conventional solid rubber engine mounts.

Passenger Space

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The Q50 has 7.7 cubic feet more passenger volume than the Stinger (101.5 vs. 93.8).

The Q50 has 1.9 inches more front headroom, 1.9 inches more front legroom, .3 inches more front shoulder room, .5 inches more rear headroom and 1.3 inches more rear shoulder room than the Stinger.

Cargo Capacity

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With its sedan body style, valet key, locking rear seatbacks and remote trunk release lockout, the Q50 offers cargo security. The Stinger’s hatchback body style, non-lockable folding seat and non-lockable remote release defeat cargo security.

Servicing Ease

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J.D. Power and Associates surveys of service recipients show that Infiniti service is better than Kia. J.D. Power ranks Infiniti fourth in service department satisfaction. With a 53% lower rating, Kia is ranked 20th.

Ergonomics

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The Q50’s front and rear power windows all open or close fully with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside the car. The Stinger’s rear power window switches have to be held the entire time to open or close them fully.

If the windows are left open on the Q50 the driver can close them all at the outside door handle. On a hot day the driver can lower the windows at the outside door handle or from a distance using the keyless remote. The driver of the Stinger can only operate the windows from inside the vehicle, with the ignition on.

The Q50’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 Stinger’s standard manually variable intermittent wipers have to be constantly adjusted.

Consumer Reports rated the Q50’s headlight performance “Good,” a higher rating than the Stinger’s headlights, which were rated “Fair.”

Economic Advantages

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/07/14

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Infiniti Q50 will be $315 to $1319 less than for the Kia Stinger.

Recommendations

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/07/14

The Infiniti Q50 outsold the Kia Stinger by 87% during 2019.

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