Two new headlight systems, rated 'good' and 'acceptable,' have been added to SX models built after March 2017.

Kia's 2017 Optima has been upgraded to Top Safety Pick Plus status thanks to new headlights.The sedan already earned top marks in all Insurance Institute for Highway Safety crash tests, however all four headlight configurations for vehicles built before April 2017 received 'poor' ratings. Starting this year, vehicles with the lowest headlight performance are disqualified from the TSP+ safety award.

Kia introduced two new headlight designs for certain trim packages that began rolling off the assembly line in April. The basic SX edition's LED projectors are now considered 'acceptable,' while the upgraded lights in the SX Limited and SX Technology variants demonstrated 'good' performance.

"The Insurance Institute for Highway Safety sets some of the highest standards when it comes to evaluating vehicle safety, and the Top Safety Pick Plus designation is a significant achievement that substantiates Kia's ongoing effort to improve the quality and integrity of our world-class model line," said KMA VP Orth Hedrick.

Other midsize rivals to receive Top Safety Pick Plus honors include the Subaru Legacy and Outback; Honda Accord; Mazda 6; Nissan Maxima and Altima; Toyota Camry and Prius v; and the Volkswagen Jetta.