I had taken my vehicle to several area benz dealerships(lynnfield,Boston and westwood)w/o any luck of having my vehicle properly diagnosed and fixed, it seem that all that i was doing was taking my vehicle to all these places were the service was so impersonal and slow in addittion to being expenssive and fustrating since it seem that they were just trowing parts at my vehicle without the problem not going away(and they're suppossed to be the dealerships!!)well after a couple of thousand dollars down the drain and the poor running condition in my vehicles engine the same I had given up till a friend that saw a new shop in salem toll me that i should stop by, week later I did and was impressed by the level of experienced the two owners wich run this shop have, I was shown in person the root cause of my engine poor running(misfire)condition, I was happy to know that two factory train merceded benz Master technicians were now so close to my home and if i needed anything for my vehicle I coulod now count on them.