In terms of drying capability it works very well. I use it on full power & full heat & water either bows away or evaporates very quickly. Its particularly useful in gaps & tight areas. There's one big inconvenience though, the cable is far too short, which means continually moving the extension cable round with you. I'm going to change the plug for a connector type extension cable, about 5 m long. This will allow 1 half of the car to be dried without moving the extension reel, then pass the drier through the inside in order to dry the other half.