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Over 200 people are killed each year when backed over by motor vehicles. The K900 has standard Rear Cross-Traffic Collision Avoidance Assist that uses rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The C-Class Sedan doesn’t offer backup collision prevention brakes.
To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the K900. But it costs extra on the C-Class Sedan.
Both the K900 and the C-Class Sedan 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, blind spot warning systems, rearview cameras and driver alert monitors.
The Kia K900 weighs 1057 to 1190 pounds more than the Mercedes C-Class Sedan. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.
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 C-Class Sedan’s 4-year/50,000-mile basic warranty expires 1 year and 10,000 miles sooner.
Kia’s powertrain warranty covers the K900 6 years and 50,000 miles longer than Mercedes covers the C-Class Sedan. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 10 years or 100,000 miles. Coverage on the C-Class Sedan ends after only 4 years or 50,000 miles.
There are over 2 times as many Kia dealers as there are Mercedes dealers, which makes it much easier should you ever need service under the K900’s warranty.
The battery on the K900 is in the trunk, which protects it from hot underhood temperatures that can degrade battery life. By keeping the K900’s battery 20 to 30 degrees cooler, its life is increased by years. The C-Class Sedan’s battery is in the hot engine compartment.
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 Mercedes vehicles. J.D. Power ranks Kia second in initial quality, above the industry average. With 24 more problems per 100 vehicles, Mercedes is ranked 12th, below the industry average.
J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Kia vehicles are more reliable than Mercedes vehicles. J.D. Power ranks Kia 10th in reliability, above the industry average. With 8 more problems per 100 vehicles, Mercedes is ranked 13th.
From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that Kia vehicles are more reliable than Mercedes vehicles. Consumer Reports ranks Kia 12 places higher in reliability than Mercedes.
The K900’s 3.3 turbo V6 produces 110 more horsepower (365 vs. 255) and 103 lbs.-ft. more torque (376 vs. 273) than the C-Class Sedan’s 2.0 turbo 4-cylinder.
To lower fuel costs and make buying fuel easier, the Kia K900 uses regular unleaded gasoline (premium recommended for maximum performance). The C-Class Sedan requires premium, which can cost 20 to 55 cents more per gallon.
The K900 has 2.9 gallons more fuel capacity than the C-Class Sedan (20.3 vs. 17.4 gallons), for longer range between fill-ups.
For better stopping power the K900’s brake rotors are larger than those on the C-Class Sedan:
For better traction, the K900 has larger tires than the C-Class Sedan (F:245/45R19 & R:275/40R19 vs. 225/50R17). The K900’s tires are larger than the largest tires available on the C-Class Sedan (F:245/45R19 & R:275/40R19 vs. F:225/40R19 & R:255/35R19).
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 C-Class Sedan’s 50 series tires.
For better ride, handling and brake cooling the K900 has standard 19-inch wheels. Smaller 17-inch wheels are standard on the C-Class Sedan.
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 C-Class Sedan, 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. Some tire options on the C-Class Sedan don’t have a run-flat feature, either.
The K900 has a standard driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads. The C-Class Sedan’s suspension doesn’t offer adjustable shock absorbers.
For a smoother ride and more stable handling, the K900’s wheelbase is 10.4 inches longer than on the C-Class Sedan (122.2 inches vs. 111.8 inches).
For better handling and stability, the track (width between the wheels) on the K900 is 3 inches wider in the front and 3.7 inches wider in the rear than the average track on the C-Class Sedan.
The K900 executes Motor Trend’s “Figure Eight” maneuver quicker than the C 300 Sedan 4MATIC (25.7 seconds @ .72 average G’s vs. 26.3 seconds @ .7 average G’s).
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 C-Class Sedan (.3) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the K900 get better fuel mileage.
Because it has more passenger and cargo room, the EPA rates the K900 a Large car, while the C-Class Sedan is rated a Compact.
The K900 has 20 cubic feet more passenger volume than the C-Class Sedan (110 vs. 90).
The K900 has 4 inches more front headroom, 4 inches more front legroom, 3.7 inches more front shoulder room, .9 inches more rear headroom, 1.4 inches more rear legroom and 2.2 inches more rear shoulder room than the C-Class Sedan.
For enhanced passenger comfort on long trips the K900’s available rear seats recline. The C-Class Sedan’s rear seats don’t recline.
The K900 has a much larger trunk than the C-Class Sedan (15 vs. 12.6 cubic feet).
A power rear sunshade and manual rear side window sunshades are standard in the K900 to help block heat and glare for the rear passengers. The C-Class Sedan doesn’t offer rear side window sunshades.
The K900 has standard heated front seats. Heated front seats cost extra on the C-Class Sedan. The K900 also has standard heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the C-Class Sedan.
The K900 has standard front air conditioned seats and offers them optionally in the rear. This keeps the passengers comfortable and takes the sting out of hot seats in summer. The C-Class Sedan doesn’t offer air-conditioned seats in the rear.
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 C-Class Sedan.
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 one for the rear passengers. Wireless charging costs extra on the C-Class Sedan.
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