Is that just Turo screwing you over? In SoCal as long as you have a fastrack account associated with the vehicle/license plate even if you have no transponder

Is that just Turo screwing you over? In SoCal as long as you have a fastrack account associated with the vehicle/license plate even if you have no transponder your account still gets charged the normal fee + a small additional courtesy fee. I believe the additional fee might be 6$ which does not seem ridiculous (to me at least). To me this more just sounds like the owner of that vehicle is an idiot and never registered the plate with fastrack.