Andrew Hall
456, X Street, Y Avenue,
Philadelphia, PA-19103
(123) 456-7890
[Subject: Normally bold, summarizes the intention of the letter] -Optional-
Dear Andrew Hall,
Please accept a sincere sorry for the entire damage I purported to your nice car today morning. Obviously the insurance will try and cover the complete costs of repairs, although I realize this is a great cause of inconvenience. I deeply apologise about my real carelessness and the problem this thing has actually caused you. Please understand that I shall try and be more conscious in the coming future.
Sincerely,
Akaash