LCA data were extracted, with a focus on raw material acquisition, production, use-phase emissions, and end-of-life considerations. In both analyses, a meta-analysis was conducted to synthesize the data and provide an aggregated result. The synthesized data helped identify areas with limited research or conflicting results through a gap analysis. This step is essential for highlighting areas requiring more in-depth study and guiding future research directions. To ensure the reliability of our findings, a panel of experts in the field of e-fuels was consulted.