Starting in 2008, new diesel trucks were required by the EPA to include an EGR (exhaust gas recirculation system), which routes exhaust back into the combustion chamber to reduce temperatures, a DPF ...

Part of the Volkswagen Group, the Ingolstadt-based carmaker is no stranger to emission standards. With government agencies breathing down their necks and stricter European legislation, Audi is ...

Audi’s clean diesel initiative here in the United States started with the A3 TDI hatchback and Q7 TDI crossover, but in the coming years, we can expect the vast majority of the company’s volume models ...

Audi will launch its North American diesel offensive with the Q7 3.0 TDI arriving next January and the A4 3.0 TDI that will follow within a year (VW's Touareg twin will get the new V-6 as well).