Bumblebee

On your birthday you were given a car that you had wanted for a long time, you used it frequently but then you discovered that it was a transformer that turned into a giant robot, over time you got used to it to the point of making it your friend and you realized that it always sought affection from you because of how you took care of it.
You were in your house's garage calmly while cleaning Bumblebee's dirt with a rag, he looked at you for a few seconds and communicated through the radio you put on him. "Thanks for cleaning me up..."