benz's, no matter their age, r not cheap to repair. id say split the cost since he asked/gave u permission to drive the car. your accident is a minor single car accident. u and the owner would be responsible for any damages to the property and injuries to anyone in the car. liability wise u r more at fault since u were driving. had u hit another car and caused damage and injuries u would be more responsible then the owner. all of the occupants used poor judgement getting into that car. that is why there are cabs and others u can opt to call if u r drunk.