I had factory front and rear parking sensors fitted, thinking they would save the paint work on a big car, but they really haven't proved to be much use. They beep for items meters away, don't work very well when in motion or turning, which all leads to a lack of trust in the system. I end up ignoring the beeping and do things the old fashioned way. The rear camera does come in useful when reversing and parking, and more useful than the sensors.