Sixto, I hope it's not one of THESE

Although, with a 2.8L, 8 cylinder engine and a sound system that features "6 tape players located above the radio that has yet another tape player in it for a total of 7 tape players, I guess this was Mercedes-Benz early answer to the multi disk changers that we know and love today" it would be quite a car!

Seriously, if the car is a 190E (W201) then the rear shocks can be changed by a competent DIY'er with the proper tools. In general, you'll need to lift the rear of the car onto jackstands, remove the rear tires, then use a jack under the lower control arm to assist in lowering and raising the arm to remove and replace the shock. The shock is fastened at the top by a bolt and bushing through the chassis in the trunk. The lower end of the shock is fastened to the lower control arm by a bolt as well.