<bold>Background</bold>: Pectus excavatum, a deformity of the chest wall, can lead to significant emotional and social challenges, adversely affecting an individual's overall well-being. While the Nuss procedure is a well-established treatment, this study evaluates the impact of a modified, minimally invasive approach on patients' quality of life. <bold>Methods</bold>: This retrospective study analyzed patients who underwent minimally invasive pectus excavatum repair (MIRPE) from 1 January 2010 to 31 January 2024. Collected data included demographics, operative details, and patient outcomes. Health-related quality of life (HRQoL) was assessed using the SF-36 questionnaire, administered preoperatively and at least four weeks post-surgery. <bold>Results</bold>: Two hundred thirty-four patients (195 male, mean age 20.5 +/- 6 years) underwent MIRPE. Postoperative results showed statistically significant improvements in all dimensions of HRQoL (Physical Component Summary Score (PCS) p = 0.007; Mental Component Summary Score (MCS) p < 0.001). Importantly, postoperative HRQoL scores were not just improved but comparable to those of the general German population, providing reassurance and confidence in the effectiveness of MIRPE. <bold>Conclusions</bold>: This study demonstrates that MIRPE significantly enhances patients' quality of life (HRQoL). The improvements observed post-surgery bring HRQoL to levels akin to healthy individuals in the German population. These findings underscore the profound positive impact of MIRPE on patients' well-being, offering hope and optimism for the future of pectus excavatum treatment.