Tier 4 Final/Stage IV-compliant EC250E and EC300E crawler excavators from Volvo Construction Equipment deliver 5 percent increased fuel efficiency over previous models and feature the Volvo ECO mode that automatically reduces fuel consumption without performance loss in most conditions. The integrated work mode system enables the operator to manually control flow to the hydraulics. E-Series options include automatic idling and auto engine shutdown that reduce engine speed to idle if the machine remains idle for a preset amount of time. 828/650-2000; www.volvo.com/constructionequipment.