I am looking at buying a 1990 audi v8 quattro with 145,000 miles on it for my son to drive. The owner is asking $1,400 and says that everything is great except that there is a problem with a reverse sensor in the transmission that causes it to operate in “limp home” mode unless he goes through a convoluted procedure each time he shifts from park to drive. If I was buying the car for myself this wouldn’t be a big problem, I just wouldn’t use park, but since it is for my son, I would need to either fix it myself or pay someone to do it. I appreciate all the advice on this board, and even though this is not a benz question, I would be interested in your thoughts, both on the transmission problem and on this vintage audi v8. Thanks.