The following statement is in the product description provided by Festool http://festools-online.com/festool-tools-1/festool-drills/festool-drills/564274-festool-cxs-cordless-drill-set.html
5. Festool Brushless Motor Technology. Brushless motors offer significant advantages over motors with brushes, including higher efficiency and reliability, reduced noise, and longer service life to name a few. This means Festool cordless drills outperform other drills that would otherwise be in the same class.
I this an oversight or does the CXS have a brushless motor?