I have an automatic Terrios just over 4 years old. Over the last few days I have noticed a lot of back wheel problems when the steering is on full lock and it seems to be getting progressively worse. The rear wheel seem to be skidding and I have to increase the revs to get to move.

At first I thought it might be the back brakes locking on but have dismissed that as it is fine when the steering is more or less straight ahead. Is this a problem with the differential and is it likely to be an expensive job? The car hasn't quite done 60,000 kms yet!

Many thanks for any knowledgeable replies.