The subject of this diploma thesis is besides the general introduction of the 3M Company and the B2B orientation which becomes more and more important nowadays also the practical part in form of situation analysis of the Automotive Aftermarket Division (AAD) as well as its marketing mix. The target market conditions, customer and competitive environment much like available human resources are important factors having influence on the components of the 4P concept. The objective of the thesis is not only the determination of common signs but mainly the discovery of differences in business and marketing activities of the Austrian and Czech AAD. Further purpose is disclosing main causes of the Austrian success and proposition of possible measures to the Czech division in order to rise efficiency of its business and marketing activities leading to potential increase in sales results.