Abstract:
The objective of this research were 1) to study service quality level of Toyota PS Enterprise Company Limited 2) to compare the service quality level of compare Toyota PS Enterprise Company Limited classified by personal factor 3) to the service quality level of Toyota PS Enterprise Company Limited classified by service department. The samples of this research wave the service users of Toyota PS Enterprise Company Limited. The sample size, calculated by W. G. Cochran formula as there is no information about the number of population, was 387 cases. The sampling technique was Multi-stage Random Sampling. The instrument of the research was questionnaire with 23 questions including personality question and service quality question. The reliability of the questionnaire was 0.94. The questionnaire data was analyzed by computer program. The statistics applied with this research were frequency, percentage, mean, standard deviation, t-test, and F-test. The multiple comparison of any difference will be tested by LSD method. The level of statistical significance was 0.05 The results of study were as follows: 1.Overall, Service Quality of Toyota PS Enterprise Company Limited was at high level ( = 4.18, S.D. = 0.40). When it was considerated in each aspects, the finding showed that Assurance was the highest level ( = 4.21, S.D. = 0.53), and following by Tangibility ( = 4.20, S.D. = 0.49), Reliability ( = 4.18, S.D. = 0.54), Emphathy ( = 4.18, S.D. = 0.56) and Responsiveness ( = 4.11, S.D. = 0.50) respectively. The score of every Service Quality dimensions were also at very high level. 2.The comparison of Toyota PS Enterprise Company Limited service quality classified by personal factor was found that the service users with differences in gender, cge, educlationa level and occupation had no difference in assessing the service quality. On the other hand, The service users with difference in income had difference in assessing the service quality of Ps Enterprise Company Limited at 0.05 level of stat is fiscally significance. When it was considevcd in escheats, the finding showed that the service users with difference in income had difference in assessing the service quality in tangibility, Reliability, end Responsiveness at 0.05 level of statistically significance.3. The comparison of service quality classified by service department was found that the service users, who used service in difference department, had no difference in assessing the service quality of Toyota PS Enterprise Company Limited.