LiAZ 5256.25 Restyling - modification with Caterpillar-3116 engine and Allison HMP. Euro-2 emission standard. Restyling - a modified front and rear mask, headlights of a different sample, different glasses. This modification was produced from mid-2005 to the end of 2006. At the beginning of 2007, this model was replaced by 5256.26, with an engine that complies with Euro-3 environmental standards.