I have a 2004 Forester where the rear wheel drive is disconnected by inserting the Appropriate fuse, the car is now front wheel drive only. Is this a common practise, and is it expensive to revert to all wheel drive.
G'day & welcome @Bill Gillbard
Are you saying you did this or have you just acquired the vehicle and it was already this way? It can be done to hide rear drive train issues. To switch to AWD just pull the fuse
Switching to front-wheel-drive was to allow the use of a space-saver spare on the rear axle.
But I have heard of people trying to improve their fuel mileage by switching the AWD to front wheel drive, a foolish move since all the mechanical parts are still there and moving. Like some have said, it could also be to hide a rear drive-train problem.