Auto accidents USED to be 3x medical...that is long past being 'standard'....
You can negotiate whatever you can negotiate, but as a starting point you are probably wasting your time with 3x unless the injury was brain damage, loss of limbs, movement, eye sight..etc.
Father of 5 loses both eyes and his hands? 10 Mil
16 year old goes to back doctor 5x and has soft tissue 'pain'? 5-10k and run like the devil