The Four Wheel Loader is part of Ravensburger's Siku Super Series - Die Cast Metal.
— When asked about top-selling die-cast, Daren Levitt, owner of Toy Chest in North Conway, N.H., replied, "Siku: They're German. We sell those and they do very well, especially the construction figures."
— Although one retailer reported sales of six units a month for the Siku die-cast, others mentioned monthly sales of eight dozen and even 200.
— Seven of 34 retailers TDmonthly spoke with in spring 2007 mentioned Siku as a best-selling die-cast item in their stores.