When refueling, many drivers are much more interested in fuel quality than in the specific brand. But at present, the Waze gas-station finder offers no means to limit searches by fuel quality.

Waze can solve this problem by supporting the identification of brands selling "Top Tier" gasoline. "Top Tier" is a consortium of vehicle manufacturers that approves certain gasoline brands as preferred for their engine designs (toptiergas.com).

"Top Tier" designation is associated with all stations selling certain brands and not with any individual station. I'm not sure what mechanism to suggest for Waze to support editing a brand-wide feature like this. Nevertheless, the capability would be a blessing to drivers hoping to extend the life of modern engines.