My wifes 1995 E320 wagon has just started a vibration when first put in Reverse and moving. After the car warms up it is not noticeable. I can hold my foot on the brake for 10 to 15 seconds after putting ingear and that will sometimes keep the car from vibrating. When driving the car yesterday I started out of the garage and it seemed the whole back of the car was shaking....WOW it was certainly different. I asked one independent mechanic and he sayed that reverse is always the first to go in those transmissions. I checked the fluid and it appears to be topped off and I actually had it serviced 5 -8K miles ago. This might be also a slipping problem that feels like a vibration????

First post so, Thanks in Advance......

 

YO buddy its most likely your transmission mount-- its collapsed and when in reverse there is too much play and that when vibration occurs