Firefighters cut the 34-year-old sole occupant of the Toyota Yaris free opposite the Northbrook Estate at around 7.50am.
Eyewitnesses reported considerable fire damage to the vehicle as it was dragged from the ditch at 8.30am, but this was unconfirmed by police.
The woman was taken by ambulance to Frimley Park Hospital with minor injuries to the face and head and is believed to be recovering well.