Any used vehicle purchase should be approached with some caution. Used tow trucks should be inspected by a certified mechanic so the buyer can have an official appraisal of the condition of the tow truck. If a Carfax report is available, it should be checked as well.
Sellers of used tow trucks should be willing to answer all the questions a potential buyer has. Reluctance to have the vehicle inspected by a mechanic or reluctance to answer questions can be a sign that the buyer should proceed with caution. When ready to purchase, make sure that both buyer and seller are clear on the terms of the sale.