Based on the powerplant alone, the VVTi is way more sophisticated. It improves the EFI technology that already gives decent power and economy and with it, good performance.
Adventure Gas is EFI giving less fuel efficiency compared to Innova VTTi with close loop system.
Rear coil suspension comfort for Innova is better than the leaf spring suspension of Adventure.
Innova has comfortable seats even on the third row and equipped with 7 seatbealts. Ceiling aircon for Innova is superbly allocated even on the last seats.
Adventure headlights tends to point upward when it has rear load, it irritates other drivers on the road.
while the innova's styling isn't for everyone's taste, its interior is definitley way better than the adventure. the adventure's interior feels dated, ride, safety and interior comfort is also behind compared to the innova. the only advantage the adventure gas m/t has over the innova gas m/t is the pricing.