First of all… sorry for my English. I’m from Switzerland and I will try my best.
Question
I’m level two right now. In order to rank up I need to collect cars, right? Yesterday I was level two and a half or so. I sold some cars and now I’m back on level two period. Do I really need to keep all the cars I won in my garage to get to level three? That would be really stupud, I think. Because my garage would be full of unwanted cars. I hope I’m doing something wrong. I don’t want to bunker a ton of cars just to get to level three.
Only cars you own count towards your collection score.
You can try buying and keeping only the cars you do want to have, you only need te get to collector level 5 (out of 44+) to have access to all cars anyway and every class has some nice cars.
You only need to keep cars you don’t want IF raising your Collector Tier matters to you, other than getting to Tier 5 as stated above. When you sell a car your Tier points value also loses the Collector point for that car.
One thing to bare in mind is, that once you remove a locked car (cars with a padlock symbol in the car collection menu that you can acquire through special events, gifts, forzathon, league races etc) from your garage, you are not able to just buy it again in the future.
I would still suggest keeping the cars in your garage (achievements, sometimes certain cars are required in certain races; you can’t tune and upgrade rental cars), because garage limit is 900 cars and currently there are 700+ unique cars. If you have hard time finding a certain car among hundreds of them in your garage, you can use the sort/filter function there (doesn’t give you much options, but still better than nothing).
You must keep them IIRC but you can have up to 900 cars in the garage. If we reach 800 with further DLC, we still have room for 100 copies of our favorite cars.
But you only really need Collector Tier 5 to have access to all of the cars in the Buy Cars menu. Once you reach Tier 5, keep what you’ve got and do whatever you want with your money!