2020 Kia K900 vs. 2020 Lexus LS Series

Detailed Review, Specifications & Comparison

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Safety

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To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the K900. But it costs extra on the LS Series.

Both the K900 and the LS Series have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver knee 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, crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning and driver alert monitors.

Warranty

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The K900 comes with a full 5-year/60,000-mile basic warranty, which covers the entire car and includes 24-hour roadside assistance. The LS Series’ 4-year/50,000-mile basic warranty expires 1 year and 10,000 miles sooner.

Kia’s powertrain warranty covers the K900 4 years and 30,000 miles longer than Lexus covers the LS Series. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 10 years or 100,000 miles. Coverage on the LS Series ends after only 6 years or 70,000 miles.

There are over 3 times as many Kia dealers as there are Lexus dealers, which makes it much easier should you ever need service under the K900’s warranty.

Reliability

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J.D. Power and Associates’ 2019 Initial Quality Study of new car owners surveyed provide the statistics that show that Kia vehicles are better in initial quality than Lexus vehicles. J.D. Power ranks Kia second in initial quality, above the industry average. With 20 more problems per 100 vehicles, Lexus is ranked 8th.

Engine

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The K900’s standard 3.3 turbo V6 produces 11 more horsepower (365 vs. 354) than the LS 500h’s standard 3.5 DOHC V6 hybrid.

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

K900

LS 500h

LS 500

Zero to 60 MPH

5.4 sec

5.5 sec

5.8 sec

Quarter Mile

13.9 sec

14.1 sec

14.2 sec

Speed in 1/4 Mile

102.2 MPH

98 MPH

101.2 MPH

Fuel Economy and Range

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To lower fuel costs and make buying fuel easier, the Kia K900 uses regular unleaded gasoline (premium recommended for maximum performance). The LS Series requires premium, which can cost 20 to 55 cents more per gallon.

Brakes and Stopping

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For better stopping power the K900’s standard brake rotors are larger than those on the LS Series:

K900

LS Series

Front Rotors

14.2 inches

14 inches

Rear Rotors

13.4 inches

13.1 inches

The K900 stops shorter than the LS Series:

K900

LS Series

60 to 0 MPH

121 feet

123 feet

Motor Trend

Tires and Wheels

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For better traction and acceleration, the K900 has larger rear tires than the LS Series (275/40R19 vs. 245/50R19).

The K900’s 245/45R19 front and 275/40R19 rear tires provide better handling because they have a lower 45 series front and 40 series rear profile (height to width ratio) that provides a stiffer sidewall than the LS Series’ standard 50 series tires.

The K900 has a standard space-saver spare tire so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the LS Series, it requires you to depend on its run-flat tires, which limits mileage and speed before they are repaired. If a run-flat is damaged beyond repair by a road hazard your vehicle will have to be towed.

Suspension and Handling

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The K900 handles at .87 G’s, while the LS 500h AWD pulls only .80 G’s of cornering force in a Motor Trend skidpad test.

The K900 executes Motor Trend’s “Figure Eight” maneuver 1.3 seconds quicker than the LS 500h AWD (25.7 seconds @ .72 average G’s vs. 27 seconds @ .65 average G’s).

Chassis

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The K900 is 4.5 inches shorter than the LS Series, making the K900 easier to handle, maneuver and park in tight spaces.

The design of the Kia K900 amounts to more than styling. The K900 has an aerodynamic coefficient of drag of .27 Cd. That is lower than the LS Series (.27 to .3) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the K900 get better fuel mileage.

The front grille of the K900 uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The LS Series doesn’t offer active grille shutters.

Passenger Space

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Because it has more passenger and cargo room, the EPA rates the K900 a Large car, while the LS Series is rated a Mid-size.

The K900 has 10.6 cubic feet more passenger volume than the LS Series (110 vs. 99.4).

The K900 has 3.8 inches more front headroom, 4.7 inches more front legroom, .2 inches more front shoulder room, .7 inches more rear headroom and .8 inches more rear shoulder room than the LS Series.

Ergonomics

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The K900 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 LS Series.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Kia K900 has a standard wireless phone charging system (Qi) in the center console and for the rear passengers. The LS Series doesn’t offer wireless personal charging.

Economic Advantages

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Insurance will cost less for the K900 owner. The Complete Car Cost Guide estimates that insurance for the K900 will cost $520 to $1155 less than the LS Series over a five-year period.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Kia K900 will be $3508 to $12618 less than for the Lexus LS Series.

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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