When you are in the lucky position having a franchise of the winners in each category, make sure to adjust your SEO content right away and use phrases J.D. Power is using, too.
I.e. if you are a Toyota franchise, and you see in the study that the 2009 Toyota Yaris is the "Highest Ranked Sub-Compact Car" in its class - then use these terms in your vehicle detail pages and pre-owned special pages!
Because consumers are aware of the study coming out in February, the search term "J.D.Power Dependability" will occur quite often in the upcoming weeks - guaranteed!