Joyce Koons Buick GMC is part of the massive Koons of Manassas. Koons strives to give you first-class customer service. It sells both used and new cars, with excellent servicing options. While you are purchasing or getting your car serviced, relax in the business center that comes with Internet. If you've got the kids with you, let them roam around in the indoor-outdoor play area. If you are wary of owning your first car, take advantage of Koons' new car owner clinic. Joyce Koons Buick GMC prides itself on taking good care of customers, many of whom keep coming back.