2010 Tiffin Allegro Bus. NO DEF! Unbelievable condition for the year. Clean! Clean! Clean! Always stored indoors. New tires and batteries last year. All options included. All Electric! Previous owner was an electrical engineer and went to great lengths to document anything that you could think of in the manuals which are included. Did I mention she is pristine? Auto MCD shades. Aqua hot, factory solar panel, basement slide out. Washer and dryer. She has nearly every option that was available on the brochure.