My 2013 Rogue Sport loses power - the speedometer just starts going down - I push the gas to the floor & nothing. It’s not getting any gas.
Many possible reasons, such as plugged fuel pump filter, plugged catalytic converter, plugged air filter, water in your fuel, and many others.
A good mechanic can locate the cause very quickly. Your car is 5 years old and you have to tell us the mileage and what maintenance you have done on it.
A car that has received little or no maintenance will behave this way.