The Retail-Wholesale group has plenty of great stocks, but investors should always be looking for companies that are outperforming their peers. Sonic Automotive (SAH) is a stock that can certainly grab the attention of many investors, but do its recent returns compare favorably to the sector as a whole? A quick glance at the company's year-to-date performance in comparison to the rest of the Retail-Wholesale sector should help us answer this question.Sonic Automotive is a member of our Retail-Wholesale grou ...