Not s Sonata top speed but high speed on the Elantra. Earlier I posted a report on my '05 Elantra after one year of owner ship. This is an excerpt from that post regarding the Elantra speed
"On the high speed section I drove the first 100 miles at 70 MPH and for the next 300 miles I never went less than 90 MPH and at times over 115 MPH. After the first 100 miles a guy with a ton of antenna and all kinds of stuff on his dash board blew past me. I hooked up with him for the next 300 miles I would let him get about a quarter mile or more in front of me. The only time I slowed down was for traffic. At times cars got between him and I and I would have to go like a bat out of hell to catch him. That's when I was going over
115+ MPH. I finally had to stop for gas as the fuel warning light was on. The car rode rock solid, no float, no lift, no sway. The car rode smooth. Surprisingly the tach never went to high. I don't remember what the tach numbers were but I remember being surprised at how relatively low they were for that high of a speed."I was in Arkansas heading north out of Little Rock. I don't know how much faster I could have gone, but there was more speed available. The
115 mph was not just a short blast for a couple of seconds. I averaged 102 mph over the last 300 miles.