This study examines what multilingual writers notice while they read their writing aloud, and whether reading aloud helps improve the accuracy of their writing during revision. It also investigates whether multilingual writers’ second language (L2) proficiency influences the extent to which reading aloud impacts revision. To address these questions, a counterbalanced, mixed design study was carried out with two experimental conditions: revising while reading aloud and revising while reading silently. Multilingual writers of higher and lower English proficiency at a large research university participated in a two-day sequence of composition and revision, two times, over the course of two weeks. Each student’s composition and revision process was screen-recorded and used in a stimulated recall interview at the end of the study procedure. Quantitative results from this study suggest that reading aloud may be more beneficial for multilingual writers at higher rather than lower English proficiencies, mostly because of lower proficiency multilingual writers’ difficulties in having to effectively allocate their attentional resources. Findings of the study help writing centers implement practices with a more nuanced, learner-specific approach to further enhance their ability to support diverse learners.