The troubled event will rebrand itself yet again in an attempt to breathe life, energy and attendance into Asia's onetime premier auto expo.
Toyota's new concepts include a sleek GT3 racer, a rugged plug-in hybrid Lexus NX crossover, a hydrogen-powered Lexus recreational buggy and a sporty GRMN Yaris hot hatchback.
Hyundai's Ioniq 5 was named World Car of the Year, besting two other electric crossovers for the award.
The automaker's motorsports division will test the car at circuits in Japan and try to set a new lap record on Germany's famed Nürburging from 2023.
Automakers will show about 10 electric vehicles or concepts at the rebranded AutoMobility LA show.