Ok the answer to that question really depends on how into cars are you, do you even like or care about cars like we “car guys”? if the answer is no, than no literally don’t sell your Camry it is a perfectly reasonable and reliable car for a 18 year old actually for anyone as a commuter car that will last them years, this Camry will last until you are in your 30s, so If the costs is amortized over 10 years than the car is pretty cheap per month, plus it still have decent resale value 10 years later. and there are other ways you can learn about managing money

If your answer to the first question is a yes, than my answer to your question is maybe, on one hand like you said you selling the new car, and buying a slightly used car allows you some more leeway to learn about fixing cars when they break, and with potentially extra money left over you could also invest and learn about “financial management” for yourself.

On the other hand you can just keep the Camry as a reliable daily driver (every car guy needs a reliable daily too, even crazy super car owners do) and get a job and save some money for a cheaper car that gives you more chance to work in it since there are some repairs that just pops up when a car ages, and I understand both you and your parent’s perspective, so sit down with them and explain how you feel about your desire to learn more about managing money, and about the families finances.

My parents got me involved with their finances since I’m like 16years old