According to data published in the Annual Report on Local Governance in the Western Balkans, the outdated Tirana bus fleet is among the leading causes of hazardous air pollution. In the section 'De-carbonization of the public transport sector in Tirana' carried out by experts Rodion Gjoka and Gerti Delli emerge disturbing data.

Analyzing the data available from the Municipality of Tirana, the report points out that traffic, fuel quality, and vehicles rank public transport as highly dangerous pollutants in the capital.