<prompt> Human: Hello just asking for a little financial help:My mom drives a lot for work and was looking for a new car because her current one is falling apart from usage and the repair costs are ridiculous.Having found one, she is asking me to co-sign for the new car I am the main signer? so there are student discounts, much lower interest rates 20 vs. 5, etc. that lower the cost by about 40.Im an 18 year old who has never boughtloanedetc. anything that would affect my credit - its a clean slate.I have a fear that something may go wrong and my credit score will be destroyed example: she loses her job and cant pay, and I couldnt either as a student.Any thoughtsadvice? Maybe this is a really good credit-building opportunity I am unaware of. Thanks rpersonalfinance.---Update: Thanks for the advice guys. Im not going to do it. For those wondering about the 20 rating, thats what she told me it was but it might be lower. She went through a divorce which led to a bankruptcy so there is that as well.Its really cool to have this place to turn to, thank you again.  <response>: This. I can get 2.49 from my credit union on a new car loan. If shes getting quotes of 20, her credit must be horrific.Dont do it. 