The size is about the same with a lower drag coefficient.
The 2026 Leaf is 3 inches shorter (76 mm) than the current hatchback, although the wheelbase is only 0.4 inches (10 mm) shorter. The new Leaf is 0.8 inches (20 mm) wider but the same height as the old car, and has a lower drag coefficient.
The size is about the same with a lower drag coefficient.