The middle row seatbelts optional on the Flex inflate when a collision is detected, helping to spread crash forces over a much larger area of the body and limiting head and neck movement. This can help prevent spinal and internal injuries. The Sedona doesn’t offer inflatable seatbelts.
The Flex offers all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The Sedona doesn’t offer all-wheel drive.
The Flex offers optional SYNC ®, which uses a global positioning satellite (GPS) receiver and a cellular system to get turn-by-turn driving directions or send emergency personnel to the scene if any airbags deploy. The Sedona doesn’t offer a GPS response system, only a navigation computer with no live response for emergencies, so if you’re involved in an accident and you’re incapacitated help may not come as quickly.
Both the Flex and the Sedona have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, front-wheel drive, height-adjustable front shoulder belts, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, rearview cameras, available collision warning systems, blind spot warning systems and rear cross-path warning.
The Flex’s 5 year corrosion warranty has no mileage limitations, but the corrosion warranty on the Sedona runs out after 100,000 miles.
There are over 6 times as many Ford dealers as there are Kia dealers, which makes it much easier should you ever need service under the Flex’s warranty.
The Flex’s standard 3.5 DOHC V6 produces 11 more horsepower (287 vs. 276) and 6 lbs.-ft. more torque (254 vs. 248) than the Sedona’s 3.3 DOHC V6. The Flex Limited’s optional 3.5 turbo V6 produces 89 more horsepower (365 vs. 276) and 102 lbs.-ft. more torque (350 vs. 248) than the Sedona’s 3.3 DOHC V6.
The Flex has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The Sedona doesn’t offer a cap-less fueling system.
For better stopping power the Flex’s brake rotors are larger than those on the Sedona:
The Flex’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs on the Sedona are solid, not vented.
For better traction, the Flex’s optional tires are larger than the largest tires available on the Sedona (255/45R20 vs. 235/65R17).
The Flex SEL’s standard tires provide better handling because they have a lower 60 series profile (height to width ratio) that provides a stiffer sidewall than the Sedona L/LX’s standard 65 series tires. The Flex’s optional tires have a lower 45 series profile than the Sedona SXL’s 55 series tires.
For better ride, handling and brake cooling the Flex offers optional 20-inch wheels. The Sedona’s largest wheels are only 19-inches.
The Flex has standard front and rear gas-charged shocks for better control over choppy roads. The Sedona’s suspension doesn’t offer gas-charged shocks.
The Flex’s 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 Sedona doesn’t offer drift compensation steering.
The Flex has 2 inches more front headroom, 1.1 inches more rear headroom and 3.7 inches more rear legroom than the Sedona.
The Flex Limited offers an optional rear tailgate seat that can be flipped rearward and used for tailgate picnics. (Do not use seat reversed while vehicle in motion.) The Sedona doesn’t offer a rear tailgate seat.
Pressing a switch automatically lowers the Flex’s second and third row seats, to make changing between passengers and cargo easier. The Sedona doesn’t offer automatic folding seats.
In case you lock your keys in your vehicle, or don’t have them with you, you can let yourself in using the Flex’s exterior PIN entry system. The Sedona doesn’t offer an exterior PIN entry system.
The Flex SE/SEL’s standard speed-sensitive wipers speed up when the vehicle does, so that the driver doesn’t have to continually adjust the speed of the wipers. The Sedona’s manually variable intermittent wipers have to be constantly adjusted. The Flex Limited’s standard wipers adjust their speed and turn on and off automatically according to the amount of rainfall on the windshield.
The Flex’s standard outside mirrors include heating elements to clear off the mirrors for better visibility. Kia only offers heated mirrors on the Sedona EX/SX/SXL.
The Flex Limited’s optional Active Park Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The Sedona doesn’t offer an automated parking system.
Consumer Reports® recommends the Ford Flex, based on reliability, safety and performance.
The Flex is ranked first in its class and received the 2015 “Total Quality Award.” The Sedona is not ranked.
The Flex was chosen as one of Automobile Magazine’s “All Stars” for 2 of the last 8 years. The Sedona has never been an “All Star.”
The Ford Flex outsold the Kia Sedona by 64% during 2014.