What is each phrase in the sentence rattling and sputtering-the old car that Martina had crept up the hill?

In the sentence "rattling and sputtering" describes the state of the old car, indicating that it is making noise and struggling to operate. "The old car" is the subject of the sentence, and "that Martina had crept up the hill" is a relative clause that provides additional information about the car, specifying that it was driven by Martina. Together, these phrases create a vivid image of the car's condition and its action.