<prompt> Human: Hello,I am buying a new car next week which costs 40k. On my mortgage I ve left about 154.000. I am wondering whats the best play here with my money. I have the cash to buy the car outright but does that make financial sense? My mortgage has a 2.75 APR and I still have 25 years left on it. If I get a car loan for 5 years that will come with 4.9 APR.Is the best deal to put money in the mortgage to save longterm on interest and use a loan for the car since the amount is a lot smaller or the other way around?Any help would be appreciated.P.S. If its relevant, I am living in Europe.  <response>: You want to pay the higher interest one. 