The Viper and Feliz II are mechanical twins — same 3,000 W BLDC in-hub motor, same 70 km/h ceiling, same two-battery swap platform, same 156 km standard-conditions range. VinFast’s official data separates them almost entirely by equipment.
What the Viper adds (official)
- Smart Key system with vehicle tracking
- Remote vehicle-finding
- Remote on/off control for anti-theft support
- LED projector headlights
- Dual rear shock absorbers with auxiliary oil reservoirs
- An entirely new design language
What the Feliz II offers instead
The inherited, familiar scooter body of Vietnam’s best-known electric family — proven ergonomics, easy parts familiarity and a shape passengers already trust — at what is typically a lower rung of the range, with the identical swap economics (9,000 VND per battery per swap; rental 175,000/300,000 VND per month).
How to decide
Choose the Viper if security and lighting matter to your life: tracking plus remote immobilisation materially changes theft risk for street parkers, and projector LED lighting is a real night-riding upgrade. The upgraded dual rear shocks also suit rougher routes and heavier loads.
Choose the Feliz II if you value the traditional format and would rather spend the difference on batteries you own or extra swap credit — the riding performance is identical by specification.
Both are licence-free and network-identical, so this comparison is a straight equipment-versus-preference decision rather than a performance one. The full reviews carry every verified figure.