The structural characteristics of self-concept refer to the way in which the elements of self-knowledge are organized and can be experienced by individuals in the form of self-concept clarity. It is intimately linked to autobiographical memory. Therefore, we sought to compare self-concept clarity and autobiographical memory between adults with ASD without Intellectual Deficiency and controls. We also explored the association between self-concept clarity and autistic traits, autobiographical memory functions and executive functions. Statistical analyses were performed using Bayesian methods. Our results showed both a lower clarity of self-concept and a lower social function of autobiographical memory in the ASDwID than in the control group. We also presented a link between clarity of self-concept and the self-function of autobiographical memory.