Legal Question in Personal Injury in Massachusetts

Ask the dealer for the name of their insurance company and submit a claim. If that doesn't work you can sue in small claims court.

Make sure you know of the costs for the accident and the basis for the accident. You should think about contacting the AG after you serve in writing your complaint to the company and if they do not make the repairs

Send the Dealer a M.G.L. c. 93A Demand letter...

http://www.mass.gov/ago/consumer-resources/consumer-assistance/93a-demand-letter.html

...requesting what you feel is an appropriate amount of money to cover your costs and damages and make you whole.

If they refuse to be reasonable and work with you, then you can sue. Depending on the facts, you might even be able to hire an attorney on a contingent basis using the fee shifting provisions of M.G.L. c. 93A.