The Grand Paris Express is a much larger and more ambitious project than the Second Avenue Subway extension, with a higher projected ridership and more extensive network expansion.
| Attribute | New York City Subway (Second Avenue Subway Extension) | Paris Métro (Grand Paris Express) |
|---|---|---|
| Projected Ridership (daily) | 110,000 (Phase 2 alone), 300,000 (Phases 1 & 2) | 3,000,000 |
| Construction Cost (total) | $6.99 billion (Phase 2 budget), nearly $7.7 billion (including financing) | Approximately $47.7 billion |
| Number of New Stations | 3 | 68 |
| Service Frequency (peak) | Every 3 minutes | Every 2-3 minutes (on some lines) |
| Accessibility Features | ADA-accessible stations | 100% accessible |
| Project Completion Timeline | September 2032 | Around 2030 |