One problem related to front suspension wheel bearing has been reported for the 2008 Ford Focus.
Ford dealer had fixed front wheel bearings under warranty, but will not fix rear wheel bearings under warranty. Car makes a roaring noise while driving. I think the rear parts on the car have been recalled, but the dealer wants to charge me $490 to fix. Also I paid $25 from the Ford dealer for wipers that keep scraping the windshield and give me poor visibility.