Japanese automakers such as Honda and Mazda have always been known in the automotive industry as having durability and longevity. These brands both guarantee that the parts they make for their vehicles are only of top quality materials so that they could last s long as their vehicles do. Their parts like Honda's Acura Catalytic Converter and the Mazda Catalytic Converter are just some of the parts that represent the quality that they have been priding themselves with. These catalytic converters are metal containers in the exhaust system that contain precious metals. These were made obviously to lessen the harmful emissions from the internal combustion and turn it into nothing much more than air. The Acura Catalytic Converter and the Mazda Catalytic Converter are responsible for the oxidation of the harmful elements like carbon monoxide and hydrocarbons to carbon dioxide and water. Aside from that crucial role, these two are also responsible for the demise of leaded gasoline. Because of their functions, they make sure that what the exhaust tailpipe blows out is not detrimental to the environment. However, although the Acura Catalytic Converter and Mazda Catalytic Converter were both made from the finest of materials, they are still not immune to the factors contributing to their failure. Extreme heat and malfunctions in the exhaust system could bring premature ruin to the catalytic converters. If that happens, symptoms such as a foul odor coming out of the vehicle's tailpipe could be a result. Also, problems with the other parts of the exhaust system like the oxygen sensor and the fuel injector could also harm the function of catalytic converters. When these catalytic converters face the situation where they already start to fail in functioning well, then they must be quickly replaced to avoid further damage on the exhaust system and to the environment. What makes a vehicle all the more stand out is the fact that they give premium performance and that they couple it up with a part like the catalytic converter. One that would not jeopardize the environment even though the vehicle seems to use a lot of fuel to give out the high performance it is expected to provide. The Mazda and Acura vehicles both pass this test because both have yet to fail to answer the call for nature's preservation.