My dealer charged me $160 for a "Complete Fuel System Service: decarbon service; clean the throttle body of all dirt and carbon deposits on throttle blad and air passages, then introduce a powerful cleaner into the intake & combustion chamber to removecarbod build up; install a fuel system flush into the fuel system to complete the cleaning process. Designed to improve overall drivability and fule economy. Also clean the injector tips to improve the spray patern and atomization of the fuel as it is sprayed into the combustion chamber." That's not on the maintenance schedule but the dealer rep says it's recommended for my area (Hot Springs, Arkansas). The dealer did not replace the cabin air filter nor the engine air filter - the rep said they were "clean" and didn't need to be replaced, even though replacement is listed in the maintenance schedule and he has checked those items off in my maintenance book. I'd appreciate your thoughts.