An advanced polymer – nanostructured carbon composite has been developed for chemicals sensing purposes. The composite matrix material is ethylene vinylacetate copolymer and electroconductive filler - carbon nanoparticles (PRINTEX XE-2). As one of scope of application can be fuel industry. Now there are available petrol with higher octane number and also biologically pure fuel. Wherewith, it is necessary to determine fuel conformity to standards and legislative requirements. First results show that sensormaterial has been able to distinguish various oil-based product vapours (petrol (98 and 95), diesel fuel and kerosene vapours) as well as indicating the differences in composition of the same brand fuel purchased in various petrol stations. This only approves the need for fast and simple fuel quality monitoring.