My concern is when I accelerate the rpm climb and engine sounds loud
My car has 87000 miles.
My car has an automatic transmission.
It sounds like your transmission may be slipping. When engine RPMs increase, but vehicle speed does not, that’s a good indication of transmission slippage. The engine will sound louder when this happens because it’s racing. Your vehicle has what’s referred to as a continuously variable transmission (CVT) and it’s known to be problematic. I recommend having your vehicle inspected firsthand by a professional to know for certain. YourMechanic is an excellent option since we come to your home or office.