What's going on with my 2002protege5?

I bought it on cl a few days ago and it seemed to run fine and the lady seemed extremely nice. Then I noticed… When going from 2nd to 3rd gear there's the slightest hesitation… But this morning i drove it and it completely stopped accelerating before it made it to 2nd gear so I had to pull over. It worked fine after that but scared me so I brought it to a transmission shop. They said its fine it only slips a little when going from 2nd to 3rd and I'd have to replace my transmission. I took it to another shop and they said everything was fine and it shifts on time… What's going on? I'm annoyed and stressed because I feel like I wasted 3 grand when I knew these transmissions were pos! Screw ford transmissions

Is it true that all cars pretty much cost the same to fix?

I'm 16 and I was talking about cars with my dad. I'm buying my own car. I told him that I just wanted to buy a regular car because high end luxury cars cost too much to repair. He said that pretty much all cars will cost the same to maintain and repair. Would it cost the same to maintain a 2006 BMW as a 2006 Ford?

Added (1). I'm just talking about luxury cars vs regular cars. Not super/sports cars.

Added (2). Could I take a BMW or Mercedes to a local mechanic?

Why isn't my 1999 Ford Windstar heat not working?

Last winter was pretty cold and I have been working to try fixing my heating problem. I took it to a shop and he said I'd have to take it to the dealer. My budget isn't that high so I replaced the blend door acuator myself and that didn't fix my problem. Not sure what to even try. My A/C works fine and air will blow out but absolutely no heat. Need Help!

Why is my starter not working on the car?

I have 1959 Ford Fareline Galaxy. The starter is simple and there's no control wire; just a main thick +12V wire controlled by relay. When I take the starter out and correctly wire it directly to battery, bypassing all other components, it does not start. I take it to AutoZone to have it tested and it starts on their machine (I saw it). So I take it back home and wire the starter directly and correctly to another, even more powerful (perfectly charged and functioning) battery and nothing. What is going on? I found a wiring schematic for car and there's no other components between the starter and the battery than the relay which I bypassed. What am I missing?

Added (1). But why did it start at AutoZone with no problems, and no hammers? The starter is only about year old.