Clean Diesel Engines

Mile for mile, diesel engines are more efficient than petrol engines. But diesel exhaust contains higher quantities of particulate matter and nitrogen oxide. Over the years, Toyota has developed a number of engine technologies that lower diesel’s impact.

Common Rail Diesel technology (D-4D), reduces CO2 emissions. Special catalysts have been developed to reduce particulate matter and nitrogen oxides. Toyota's D-4D and exhaust gas recirculation helps to reduce the presence of hydrocarbons, carbon monoxide and particulate matter in vehicle exhaust.

In 2003, Toyota revolutionised the diesel engine by combining these different technologies into a single, integrated solution called Toyota Diesel Clean Advanced Technology (Toyota D-CAT). This advanced concept dramatically reduces particulate matter and nitrogen oxides, resulting in the world’s cleanest diesel engine technology.