Hi ... acquired a used approved E320 CDi Avantguard last year .... now 3 and half years old ... 31,000 on the clock ... driving on m/way two weeks ago and front right suspension spring snapped ... been replaced under extended warantee however am very concerned as would expect a MB with such low miles and age to go for ever without such a mechanical issue ... anyone have any suggestions? ... I'm thinking of selling but love the car too much