## 1 Introduction
These studies emphasize the broader acceptance and optimization of P2P car sharing, with a focus on adapting to technological advancements, improving public perceptions, and ensuring trust and security within the system. Each of these areas is critical for the successful expansion and sustainability of P2P car-sharing services [23; 24; 25]. Synthesizing the existing literature on P2P car sharing, it is evident that this model offers substantial environmental, social, and economic benefits while presenting challenges that require strategic approaches for optimization. Ecologically, P2P car sharing significantly reduces greenhouse gas emissions by promoting higher utilization rates of existing vehicles, limiting the production of new cars, and encouraging shifts toward alternative transportation methods such as public transit, cycling, or walking. Economically, it allows users to reduce costs and generate income from underutilized vehicles while socially fostering a sense of community and shared responsibility. Operational research highlights the importance of maintaining high service quality and profitability, even in the face of demand uncertainty, and underscores the need for trust-building mechanisms, such as algorithm-based reputation systems, to ensure user confidence. Despite these insights, the literature reveals an evident gap in exploring P2P car-sharing systems in contexts like that of Katowice, a city in central-southern Poland undergoing post-mining transformation. The unique challenges and opportunities in such transitioning urban environments remain underexplored. Building on this, while the indicated research topics cover a broad range of issues, no studies have been identified that focus on the compliance of vehicles available for rental in peer-to-peer car-sharing systems from a technical perspective. These issues are particularly important and require consideration because when choosing a car-sharing service, the vehicle and its attributes play a key role in the decision to rent, which is emphasized by research carried out for classic forms of car-sharing services [1; 26; 27; 28]. For example, research by [PERSON] [26] has shown that regular B2C car-sharing users prefer larger vehicles from classes C and D. These cars offer more space, better usability, and comfort, which are important for users who need a vehicle for different types of trips. The results of this study suggest that the size and type of vehicle are crucial factors in deciding to rent shared cars [26]. On the other hand, [PERSON] et al. [27] indicate that car quality also strongly influences user satisfaction. They stated that several recent failures in car sharing operations have been due to poor car quality [27]. What is more, a study by [PERSON], [PERSON], and [PERSON] [28] indicated that technological features and overall vehicle comfort are key factors influencing car-sharing user satisfaction. The authors noted that navigation systems, connectivity options, and a comfortable interior significantly affect users' rental decisions [28]. While there are no specific studies that examine vehicle attributes in peer-to-peer car-sharing systems, related research on traditional car rental services and consumer vehicle purchasing behaviors provides valuable insights. A study by [PERSON] and [PERSON] [29] on consumer preferences in car purchasing shows that buyers tend to favor vehicles with high fuel efficiency, advanced safety systems, and modern technological features, all of which play an important role in their decision-making process. These findings suggest that vehicle attributes are likely to be similarly significant in peer-to-peer car sharing, as users seek vehicles that meet their expectations for quality and convenience, regardless of the rental duration. Therefore, even though direct research on this topic is lacking, the trends observed in related sectors indicate that the importance of vehicle attributes in peer-to-peer car sharing should not be underestimated.