The 2020 Toyota Corolla uses LED bulbs for both the low-beam and high-beam headlights. The fog lights, daytime running lights, and center stop light are also listed as LED, so these applications do not have a replacement bulb size specified in the supplied fitment data.
Exterior lighting varies by equipment. Front turn signals use 7444NA on the listed fitment, while the sedan with multi-LED headlights uses 7440A. Rear turn signals are listed as 7440, with 7440A specified for sedans with Bi-LED headlights. Reverse lights may be LED or 921 on sedans with Bi-LED headlights.
Brake and tail light fitments can be 7443 or LED. Parking lights are LED in one listing, while sedans with Bi-LED headlights use 7444NA. Front side markers use 168 or 168NA; rear side markers are LED or 7443A on sedans with multi-LED headlights. Interior and auxiliary sizes include DE3175 for the dome light, 168 or 917 for map and trunk lights, and 194 or 7441 for vanity lights. License plate lights use 168 or 917.