Top Tier Detergent Gasoline

Common card · No. 422990

Top Tier Detergent Gasoline and Top Tier Diesel Fuel (both stylized TOP TIER) are performance specifications and trademarks for fuel, designed and supported by several automakers. BMW, General Motors (GM), Fiat Chrysler Automobiles, Ford, Honda (incl. Acura), Toyota, Volkswagen, Mercedes-Benz, Navistar, Audi, and Volvo support the gasoline standard, while General Motors, Volkswagen, Detroit Diesel, and Navistar support the diesel standard (as of 2018). Top Tier fuels must maintain levels of detergent additives that are believed to result in a higher standard of engine cleanliness and performance as compared to the United States Environmental Protection Agency (EPA) requirement. In addition, Top Tier fuels may not contain metallic additives, which can harm the vehicle emission system and create pollutants. As of 2026, Top Tier Detergent Gasoline is available from 105 licensed retail brands, and Top Tier Diesel Fuel is available from 6. Licensed Top Tier fuel retailers use a higher level...

Read on Wikipedia