I'm not a car person, so don't know how to explain this. But my 2006 Forester frequently has a sensation of braking even though I'm not braking. It's similar to when you take your foot off the gas, but a bit more abrupt. It comes and goes quite quickly. Sometimes this is accompagnied by a smell of brakes burning, especially on longer drives up ski hills, but not always. It is usually when I'm going downhill, and I thought at first it was brakes sticking but the mechanics checked it and said the brakes are fine. Then I thought it was because I'm not used to AWD and the car is just correcting itself on slippery/icy surfaces, but it does it even when driving on clean pavement with no hill. Any thoughts?