Consumer Behaviors and Opinions on Service Quality Factors of Coin-Operated Car Wash Businesses in Phra Nakhon Si Ayutthaya Province

Abstract

This research aimed to: 1) examine the demographic characteristics of self-service car wash users in Mueang District, Phra Nakhon Si Ayutthaya Province; 2) study consumer behavior in using self-service car wash services; and 3) analyze user opinions on service quality factors and test differences in opinions based on demographic characteristics and usage behavior. The sample consisted of 400 users, with data collected via questionnaires. Descriptive and inferential statistics were used for data analysis, with a significance level set at 0.05. The findings revealed that: 1) most respondents were female, aged between 31–40 years; 2) they used the service once a month, usually in the evening, due to its low cost and emphasized service quality, particularly safety; 3) users rated the service quality at a high level, and a statistically significant difference was found in terms of travel convenience.