Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Why should I trust investment banks' ratings?
In theory, GS has a Chinese Wall between the department which issued the advice and any departments which may profit from such advice. This would take away some of your distrust, except for the fact that GS did violate these rules in the past (see the answer from user10665). You're wondering about the timing, prior to the release of figures by Tesla itself. This is quite normal. Predicting the past is not that useful ;) The price range indeed is wide, but that too is a meaningful opinion. It says that GS thinks Tesla's share price strongly depends on factors which are hard to predict. In comparison, Coca Cola's targets will be in a much smaller range because its costs and sales are very stable.