2020 Lexus IS Series 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 2020/06/06

For enhanced safety, the front and rear seat shoulder belts of the Lexus IS Series have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Kia Stinger doesn’t offer pretensioners for the rear seat belts.

The IS Series’ 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.

Both the IS Series and the Stinger have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, 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, blind spot warning systems, rear parking sensors and rear cross-path warning.

Warranty

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The IS Series’ corrosion warranty is 1 year and unlimited miles longer than the Stinger’s (6/unlimited vs. 5/100,000).

Reliability

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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 IS Series’ reliability 55 points higher than the Stinger.

J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Lexus vehicles are more reliable than Kia vehicles. J.D. Power ranks Lexus first in reliability, above the industry average. With 20 more problems per 100 vehicles, Kia is ranked 10th.

From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that Lexus vehicles are more reliable than Kia vehicles. Consumer Reports ranks Lexus first in reliability. Kia is ranked 9th.

Engine

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As tested in Motor Trend the IS 350 3.5 DOHC V6 is faster than the Stinger GT-Line 2.0 turbo 4-cylinder:

IS Series

Stinger

Zero to 30 MPH

1.9 sec

2.4 sec

Zero to 60 MPH

5.3 sec

6.6 sec

Zero to 80 MPH

9 sec

10.7 sec

Zero to 100 MPH

14.1 sec

16.6 sec

Passing 45 to 65 MPH

2.8 sec

3.3 sec

Quarter Mile

13.9 sec

15 sec

Speed in 1/4 Mile

99.4 MPH

95.2 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 2020/06/06

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

IS Series

Stinger

RWD

3.5 V6 (311 HP)/8-spd. Auto

20 city/28 hwy

17 city/25 hwy

3.3 turbo V6/Auto

AWD

3.5 V6 (311 HP)/6-spd. Auto

19 city/26 hwy

17 city/25 hwy

3.3 turbo V6/Auto

The IS Series has 1.5 gallons more fuel capacity than the Stinger (17.4 vs. 15.9 gallons), for longer range between fill-ups.

Environmental Friendliness

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In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Lexus IS Series higher (5 out of 10) than the Kia Stinger (3). This means the IS Series produces up to 16.5 pounds less smog-producing pollutants than the Stinger every 15,000 miles.

Brakes and Stopping

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For better stopping power the IS Series’ standard front brake rotors are larger than those on the Stinger:

IS Series

Stinger

Front Rotors

13.1 inches

12.6 inches

The IS Series’ 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 IS Series 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 IS Series stops much shorter than the Stinger:

IS Series

Stinger

70 to 0 MPH

177 feet

182 feet

Car and Driver

60 to 0 MPH

111 feet

126 feet

Motor Trend

Suspension and Handling

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The IS Series AWD handles at .89 G’s, while the Stinger GT pulls only .85 G’s of cornering force in a Motor Trend skidpad test.

The IS 350 AWD executes Motor Trend’s “Figure Eight” maneuver quicker than the Stinger (26 seconds @ .72 average G’s vs. 26.8 seconds @ .67 average G’s).

For better maneuverability, the IS Series’ turning circle is 2.5 feet tighter than the Stinger’s (34.2 feet vs. 36.7 feet). The IS Series AWD’s turning circle is 3 feet tighter than the Stinger AWD’s (35.4 feet vs. 38.4 feet).

Chassis

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The IS Series is 5.9 inches shorter than the Stinger, making the IS Series easier to handle, maneuver and park in tight spaces.

The design of the Lexus IS Series amounts to more than styling. The IS Series has an aerodynamic coefficient of drag of .28 Cd. That is lower than the Stinger (.3) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the IS Series get better fuel mileage.

The IS Series 300 RWD offers available computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The Stinger doesn’t offer active noise cancellation.

As tested by Car and Driver, the interior of the IS 350 F Sport is quieter than the Stinger GT2:

IS Series

Stinger

Full-Throttle

73 dB

84 dB

70 MPH Cruising

65 dB

71 dB

Cargo Capacity

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With its sedan body style, valet key, locking rear seatbacks and remote trunk release lockout, the IS Series 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 Lexus service is better than Kia. J.D. Power ranks Lexus second in service department satisfaction. With a 56% lower rating, Kia is ranked 20th.

Ergonomics

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Unlike the driver-only memory system in the Stinger GT1/GT2, the IS Series offers an optional driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.

The IS Series’ 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 IS Series 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. (This window function must be activated by your Lexus service department.) The driver of the Stinger can only operate the windows from inside the vehicle, with the ignition on.

A power rear sunshade is optional in the IS Series to help block heat and glare for the rear passengers. The Stinger doesn’t offer a rear sunshade.

Economic Advantages

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The IS Series will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the IS Series will retain 44.01% to 47.7% of its original price after five years, while the Stinger only retains 36.32% to 37.7%.

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 2020/06/06

The Lexus IS Series outsold the Kia Stinger by 8% during 2019.

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