Purpose <p>To investigate the incidence, anatomical risk factors, and peri-operative determinants of surgical-site infection (SSI) after operative repair of maxillofacial fractures caused by E-scooter and E-bike trauma, a rapidly emerging cause of urban injuries.</p> Methods <p>A retrospective cohort of 129 consecutive patients with micromobility–related facial fractures (2017–2022) was analyzed. Demographic, injury, operative, and pharmacologic variables were extracted from medical records. SSI was defined according to CDC/NHSN criteria and graded using the Clavien–Dindo classification. Comparative analyses employed Fisher’s exact and Mann–Whitney U tests.</p> Results <p>SSI occurred in 3.1% (4/129; 95% CI 0.9–7.7%) of patients, all of whom were classified as Clavien–Dindo grade III and required reoperation or intravenous therapy. Infections were exclusively confined to sinus-bearing fractures (orbit, frontal, zygomatic), with significant clustering in orbital fractures (<i>p</i> = 0.023) and sparing of the mandible (<i>p</i> = 0.041). ORIF carried the highest burden, with an infection rate of 8.6%, while one case was managed with isolated soft-tissue repair. Neither operative duration, emergency status, steroids, nor antibiotic prophylaxis reduced the risk of infection. Infected patients had longer hospitalizations (7 vs. 5 days) and markedly prolonged surveillance periods (60 vs. 8 weeks; <i>p</i> = 0.053).</p> Conclusions <p>Although uncommon, SSI in micromobility trauma occurs in 3.1% of patients and demonstrates an anatomical concentration within sinus-bearing fractures. These findings describe the occurrence and anatomical distribution of SSI within a micromobility-related facial trauma cohort and may inform future hypothesis-driven studies.</p>