The 2016 Optima features a uniquely engineered body that combines various high-tensile strength steel alloys and sits on a chassis that is stiffer and more durable thanks to the increased use of Advanced High Strength Steel (AHSS). With more than 50 percent of the body constructed from AHSS, the all-new Optima represents a 150-percent increase over the previous car. The greater use of structural adhesive by more than 450 percent over the previous generation improves NVH and contributes to structural rigidity. Engineers also added more hot stamped components to the all-new Optima, a 350-percent increase over the 2015 model. This body structure helps provide crash protection, better driving dynamics, and is the foundation for a quieter ride.
Additional innovations were implemented to reduce NVH, lighten the vehicle and enhance aerodynamics. The 2016 Optima is the first Kia to feature a panoramic sunroof support structure made with carbon-fiber-reinforced plastic, which helps reduce weight and lower the vehicle’s center of gravity. A larger full floor under cover helps reduce wind noise and aid fuel efficiency. Increased dash insulation, added windshield side molding and the increased use of structural adhesive ensure a quiet ride with reduced road and wind noise. Engine mounts, body panels and wheels all are stiffer on the all-new Optima, reducing vibrations, engine noise and road noise. Larger cross-member bushings are utilized to help isolate road and engine noise, as well as reducing engine vibration through the floor and steering wheel.
Improving ride and handling was a top priority for engineers. Overall, the chassis is lighter and stiffer, resulting in improved steering response, high-speed stability and handling. Moving the suspension location points of the front and rear sub-frames outward optimizes suspension geometry for a smoother ride over uneven pavement. Where the previous Optima made due with dual bushing mounts, increased lateral stiffness was achieved with a four-bushing mount system for both sub-frames. The increased stiffness pays dividends in improved steering response and tractability through corners. More robust wheel bearings up front and the addition of larger dual lower control arms at the rear also help refine the all-new Optima’s ride and handling characteristics. Available Rack-mounted Motor Driven Power Steering (R-MDPS) improves steering response with a higher gear ratio.
The all-new Optima is available with three engine choices, striking a performance balance between sportiness and fuel efficiency. Two powerplants carry over from the previous generation, the 2.4-liter GDI four-cylinder, available on the LX and EX models, and the 2.0-liter GDI turbo engine, available on the SXL and SX Turbo models. While the engines have yet to receive EPA certification, the 2.4-liter is estimated to produce 185 horsepower at 6,000 rpm and 178 lb.-ft. of torque at 4,000 rpm. The 2.0-liter turbo is expected to generate approximately 247 horsepower at 6,000 rpm and 260 lb.-ft. of torque at 1,350 rpm. Both engines are mated to a six-speed automatic transmission with Sportmatic® shifting while the SX and SXL trims add paddle shifters. Both engines have been retuned for fuel economy9 and better performance and drivability with maximum torque now available at a lower RPM.
All new for the 2016 model is a 1.6-liter four-cylinder turbo engine. The 1.6-liter will be offered on the LX trim. Pushing out an estimated 178 horsepower at 5,500 rpm and a stout 195 lb.-ft. of torque at just 1,500 rpm, the new engine mates to a seven-speed DCT, a first for the Kia brand. The transmission optimizes the engine’s responsiveness for a sporty feel that doesn’t sacrifice fuel economy. Also new for the Optima, Michelin®10 tires are available on all trims. All three engines channel energy through the front wheels.