2020 Lexus LS Series vs. 2020 Kia K900

Detailed Review, Specifications & Comparison

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Safety

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For enhanced safety, the front and rear seat shoulder belts of the Lexus LS 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 K900 doesn’t offer pretensioners for the rear seat belts.

The LS Series has standard Secondary Collision Brake, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The K900 doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

Both the LS Series and the K900 have standard driver and passenger frontal airbags, front and rear 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, crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning, driver alert monitors, available all wheel drive and around view monitors.

Warranty

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The LS Series’ corrosion warranty is 1 year and unlimited miles longer than the K900’s (6/unlimited vs. 5/100,000).

Reliability

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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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The LS 500’s standard 3.4 turbo V6 produces 51 more horsepower (416 vs. 365) and 66 lbs.-ft. more torque (442 vs. 376) than the K900’s 3.3 turbo V6.

As tested in Motor Trend the LS 500 is faster than the Kia K900:

LS Series

K900

Zero to 60 MPH

5.3 sec

5.4 sec

Quarter Mile

13.7 sec

13.9 sec

Speed in 1/4 Mile

103 MPH

102.2 MPH

Fuel Economy and Range

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On the EPA test cycle the LS Series gets better mileage than the K900:

MPG

LS Series

RWD

500h 3.5 V6 Hybrid

25 city/33 hwy

500 3.4 turbo V6

19 city/30 hwy

AWD

500h 3.5 V6 Hybrid

23 city/31 hwy

500 3.4 turbo V6

18 city/27 hwy

K900

AWD

3.3 turbo V6

18 city/25 hwy

Regenerative brakes improve the LS Series Hybrid’s fuel efficiency by converting inertia back into energy instead of wasting it. The K900 doesn’t offer a regenerative braking system.

The LS 500’s standard fuel tank has 1.4 gallons more fuel capacity than the K900 (21.7 vs. 20.3 gallons), for longer range between fill-ups. The LS 500h’s fuel tank has 1.9 gallons more fuel capacity than the K900 (22.2 vs. 20.3 gallons).

Transmission

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A 10-speed automatic is standard on the Lexus LS Series, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the K900.

The LS 500h has a standard continuously variable transmission (CVT). With no “steps” between gears, it can keep the engine at the most efficient speed for fuel economy, or keep it at its peak horsepower indefinitely for maximum acceleration. The K900 doesn’t offer a CVT.

Brakes and Stopping

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For better stopping power the LS Series F-Sport’s front brake rotors are larger than those on the K900:

LS Series F-Sport

K900

Front Rotors

15.7 inches

14.2 inches

Rear Rotors

14.1 inches

13.4 inches

The LS Series stops shorter than the K900:

LS Series

K900

60 to 0 MPH

113 feet

121 feet

Motor Trend

Tires and Wheels

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For better ride, handling and brake cooling the LS Series offers optional 20-inch wheels. The K900’s largest wheels are only 19-inches.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the LS Series can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The K900 doesn’t offer run-flat tires.

Suspension and Handling

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The LS Series F-Sport offers active sway bars, which help keep it flat and controlled during cornering, but disconnect at lower speeds to smooth the ride and offer greater off-road suspension articulation. This helps keep the tires glued to the road on-road and off. The K900 doesn’t offer an active sway bar system.

The LS Series has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The LS Series’ height leveling suspension allows the driver to raise ride height for better off-road clearance and then lower it again for easier entering and exiting and better on-road handling. The K900 doesn’t offer a load leveling suspension.

The LS Series 500 F Sport handles at .88 G’s, while the K900 pulls only .87 G’s of cornering force in a Motor Trend skidpad test.

For better maneuverability, the LS Series’ turning circle is 2.4 feet tighter than the K900’s (36.8 feet vs. 39.2 feet).

Chassis

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The LS Series uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The K900 doesn’t offer active noise cancellation.

Cargo Capacity

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The LS Series has a much larger trunk than the K900 (17 vs. 15 cubic feet).

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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If the windows are left open on the LS 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. (Your Lexus service department must activate this window function.) The driver of the K900 can only operate the windows from inside the vehicle, with the ignition on.

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The LS Series offers available headlight washers to keep headlight output high. The K900 doesn’t offer headlight washers.

The LS Series offers optional massaging front and rear seats in order to maximize comfort and eliminate fatigue on long trips. Massaging seats aren’t available in the K900.

The LS Series offers an optional 115-volt a/c outlet on the center console, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The K900 doesn’t offer a house-current electrical outlet.

Model Availability

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The LS Series is available in both rear-wheel drive and all-wheel drive configurations. The K900 doesn’t offer a two-wheel drive configuration.

Economic Advantages

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The LS Series will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the LS Series will retain 37.67% to 38.79% of its original price after five years, while the K900 only retains 27.93%.

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 2020/06/02

The Lexus LS Series outsold the Kia K900 by over 14 to one during 2019.

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