[Barry T]

Use Sport mode and the noise goes away, right? So, I don't think that it's a a stretch to assume that since the car goes through all the gears without the noise in Sport mode, everything works fine. Move on or trade the car in or it is going to drive you crazy..

 

[Barry T]

There are two Tesla's in our family and they have issues. I have owned Hondas and Acuras, the transmissions suck and wouldn't buy another. Toyotas are probably the best engineered, but when Toyota wanted $4400 to replace my 4Runner exhaust from the cat back, I traded it in and bought an Atlas. Corvettes, etc. Nothing is perfect and technology has allowed cars to get cheaper over the years, if you consider the standard features added. For example, you can't change the filter in the transmission anymore on most cars, there isn't one. It has been eliminated to reduce cost. Automakers are going to buy parts from China or a third world country at a fraction of the cost to stay competitive and stay in business, which benefits you, the consumer. The main difference is the warranty. If it breaks during the warranty period, they are obligated to fix it. Find a good dealership and if they can't fix it, my advice is to find another. You can probably use this forum to ask for dealer recommendations in your area.
BTW, although not perfect, my Atlas has not given me any problems, just some annoyances.