Vehicle drifts left and right at interstate highway speeds, requiring constant attention and correction by the driver, which is distracting and contributes to driver fatigue. Unable to track smoothly around curves. Similar to alternating cross winds, even when there are none. Situation very aggravating in actual cross winds. Any police officer would be justified in issuing a ticket for "weaving". dealer technician drove the car and acknowledged that this is a negative characteristic of electrical steering and nothing to be done for it. He supposedly changed some setting from "hard" to "soft', but that had no effect after I left the dealer, maybe even being worse. I complained to Hyundai on their website, with no response to date. I am a professional engineer (mostly aviation) and suspect that some damping needs to be applied to the steering system. At this time, I am noticing that about half of the 2013 Sonata complaints concern the steering system. NHTSA should take action before accidents begin occurring due to this obvious safety defect. Updated 05/23/13 updated 09/10/13 updated 01/02/14

- Sadieville, KY, USA