BackgroundGeneral motor impairments are ubiquitous in Autism and are positively correlated with autism symptom severity. This study assessed the feasibility and acceptability of a 13-week community-based motor program for autistic children with moderate and high support needs (MHS). MethodIn this exploratory single arm within-subject study, 10 autistic children with MHS, ages 4–10 years, completed a community-based motor program delivered in a one-on-one format by therapists. Feasibility was determined through recruitment, retention, attendance, enjoyment, engagement and useability of motor, physical activity (PA), and behavioural assessment tools. Thematic analysis evaluated post-intervention semi-structured parent interviews. ResultsHigh program attendance and retention were demonstrated, and therapists reported child engagement and enjoyment were high. Identified themes revealed parents perceived unexpected substantial positive impacts including improvements in social, motor, and behavioural outcomes. They highly valued both the program and the therapeutic relationships fostered within it. Although parents of the children with the higher support needs reported the most substantial improvements, these children were unable to score on motor assessments due to difficulties following instructions and off-task behaviours. Additionally, only four participants wore an accelerometer-based PA monitor. ConclusionsThis community-based motor program was considered feasible and acceptable by the children’s parents, and qualitative findings provided valuable insights into clinical practice for children with MHS. However, recruitment challenges and assessment tools being unfeasible for children with higher support needs led to low participant numbers. Future evaluations should explore alternative assessment measures and study designs, given the challenges associated with studying such a heterogenous and complex group.