Newly opened accounts will generally drop your score in the short term, until you establish a payment history of at least 6-12 months on that account.
As far as hindering the process of buying a home, so long as your credit scores are still acceptable, it only hinders you to the extent that the lender must how consider the car payment and its impact on your income. For example, if your car payment is $400/month, that is $400 per month less that you can spend on a mortgage payment.
Feel free to give me a call and I can lay out your mortgage options for you, such as rates, programs you qualify for, and how much.
Tony Grech | Mortgage Loan Originator | NMLS 977416
PMAC Lending Services, Inc.
Toll-free (855) 642-4762 | Fax (248) 945-4842 | Direct (248) 728-0078