Decided to max my car out on my trip from Idaho to Montana. Roads were actually in good shape so I went for it and hoped there were no cops. Only Mod I have on my 2017 RS 1.4 Turbo automatic is a K&N Intake and car only has 6,000 miles on it. I did a google search and most of what I could find stated the Sonics were governed at 105 MPH, guess that's not true.