What interest rate should i expect to buy a new car from BMW?

I'm gonna by a 36,000 new BMW car and put down 20,000 then finance the rest( my friend will be the co-signer because my credit is not good at all). Will my credit be built in this case? ThankssssssssssssssssssWhat interest rate should i expect to buy a new car from BMW?your credit will be built within a year, you should not miss a single payment and they all should be on time, also if you have credit cards you should pay above minimum on time and should never miss any payment, do it for a year then your credit will be back on track.