Lilium: Electric Air Taxi Burns Through €1 Billion and Collapses Into Insolvency
What happened
Lilium GmbH, the Munich-based eVTOL startup promising 6-passenger flights at 300 km/h, filed for insolvency in October 2024 after burning through approximately €1 billion. The company had never received type certification from EASA or the FAA, had no production aircraft, and had missed multiple self-imposed certification milestones. A last-ditch rescue by parent company Lilium N.V. collapsed when German government loan guarantees failed to materialise.[1]
What went wrong
Lilium's 36 electric ducted fans consumed battery energy inefficiently in hover mode, creating a fundamental range-payload-weight trade-off the company never resolved. Battery energy density improvements required for the aircraft's promised performance kept receding into the future. The company went public via SPAC in 2021 at a $3.3B valuation based on projections of mass-market urban air mobility by 2024 — a timeline that ignored the decade-long reality of aerospace certification. EASA certification requires extensive flight data from production-representative aircraft; Lilium's prototypes were pre-production demonstrators.[1]
Lesson learned
Aviation certification timelines are measured in decades, not startup sprint cycles. Battery physics constrains eVTOL aircraft in ways that cannot be resolved by software updates. Going public via SPAC on unproven aerospace projections allows retail investors to fund what should be basic R&D risk. Lilium was the third major eVTOL company to collapse, suggesting the sector's projections have been systematically over-optimistic.
Sources
- [1]
External links can go dark — pages move, paywalls appear, domains expire. Every source above includes a Wayback Machine snapshot link as a fallback. All citations are best-effort research; if a source contradicts our summary, the primary source takes precedence.