A skilled windshield repair technician can fix a crack that runs across the entire windshield. In other words, almost any crack is repairable. However, most technicians recommend replacing the windshield instead of fixing long cracks.
Cost is a major factor. Repair prices depend on the size of the damage. Fixing a crack longer than 12 inches can cost nearly as much as a full replacement. Visibility is another concern. Even after repair, long cracks may still be noticeable. If that would bother you, replacement is the better option.
Many long crack repairs happen on high-end luxury cars, where a windshield replacement can cost around $1,100. In these cases, some customers prefer a $200 repair to delay replacement.