Bosch has announced that its clean diesel technology will be featured in four new Audi TDI models now on sale in the US – the Audi A8, A7, A6 and Q5. It also forecasts that diesel volumes in the US will rise sharply.

Bosch says its technology will provide significant benefits to Audi's line-up, including improved fuel efficiency, better performance and lower carbon emissions.

"As a leading clean-diesel supplier, we are proud to work with Audi to offer drivers an alternative powertrain that has so many unique benefits," said Bernd Boisten, regional president, Diesel Systems North America, Robert Bosch, LLC. "For us, it's about giving consumers the best available options. With proven technology, clean diesel offers a solution that is cost-effective, environmentally friendly and ultimately fun to drive."

Bosch maintains that today's diesel vehicles are increasingly advanced, delivering up to 30% better fuel economy compared with traditional port-fuel-injected (PFI) gasoline engines, while providing 50% more torque and up to 25% lower CO2 emissions. 

As a result of these benefits, Bosch says it anticipates the market penetration of clean diesel-powered engines in the US to grow to 10% by 2018. The recent announcement from Audi further solidifies this growth.

"We have just started to tap the potential of clean diesel technology," said Scott Keogh, president, Audi of America. "Our plan to add four new TDI models to our US lineup this year demonstrates our commitment to clean diesel as a way to improve fuel economy and to curtail greenhouse gas emissions."

According to Bosch's analysis of Polk registration data, when consumers have the option of owning and operating a gasoline-fuel vehicle or a clean-diesel engine in the same make and model, 30% are more likely to choose diesel.

"Multiple reasons explain this growth in consumer acceptance, but purchasers are beginning to understand that diesels offer substantial value when compared with traditional gasoline engines," Boisten said. "For instance, a Carnegie Mellon University study underwritten by Bosch found that the price differential between a clean-diesel passenger car and a traditional PFI gasoline-powered vehicle could be recouped in less than 18 months of driving, through higher resale values and fuel savings," he added.