  The environmental performance of shared micromobility services compared to
private alternatives has never been assessed using an integrated modal Life
Cycle Assessment (LCA) relying on field data. Such an LCA is conducted on three
shared micromobility services in Paris - bikes, second-generation e-scooters,
and e-mopeds - and their private alternatives. Global warming potential,
primary energy consumption, and the three endpoint damages are calculated.
Sensitivity analyses on vehicle lifespan, shipping, servicing distance, and
electricity mix are conducted. Electric micromobility ranks between active
modes and personal ICE modes. Its impacts are globally driven by vehicle
manufacturing. Ownership does not affect directly the environmental
performance: the vehicle lifetime mileage does. Assessing the sole carbon
footprint leads to biased environmental decision-making, as it is not
correlated to the three damages: multicriteria LCA is mandatory to preserve the
planet. Finally, a major change of paradigm is needed to eco-design modern
transportation policies.
