Efficient and clean: exhaust aftertreatment for gasoline and diesel engines | Audi MediaCenter
Audi Q7 3.0 TDI Clean Diesel | Autocar
2015 Audi A7 TDI Clean Diesel Test Drive Review | AutoTrader.ca
Audi A4 TDI Clean Diesel Expected in the Years to Come - autoevolution
2016 Audi A7 TDI review notes
Audi To Launch Super Clean Diesel Units In Europe & USA From 2008 | Carscoops
U.S. federal consumer watchdog sues Volkswagen over false 'Clean Diesel' advertising claims - National | Globalnews.ca
Audi revs up promotion of clean diesel technology with new TDI line-up | Digital Trends
2014 Audi A6 TDI Clean Diesel Review and Quick Spin | Autobytel
Audi unveils new 3.0-litre Clean Diesel engine | Autocar India
Audi TDI Clean Diesel | Audi Meadowlands
Audi A6 3.0 TDI Clean Diesel quattro S-Line – Auto Turtle
Audi A3 TDI Clean Diesel (2012) - picture 5 of 13
Audi Aims To Burnish Green Brand With Its Own Clean Diesel
Audi brings clean diesel to luxury lineup
Volkswagen emissions scandal - Wikipedia
2014 Audi Q5 TDI Diesel Crossover: Fuel Economy Test
Audi A6 3.0 TDI Clean Diesel quattro S-Line – Auto Turtle
Abt Audi Q7 3.0 TDI Clean Diesel | CAR ENGINE AND SPORT
2011 Audi Q7 TDI Clean-Diesel SUV: Quick Drive
Audi to introduce four new TDI® clean diesel models to the U.S. Market at the L.A. Auto Show - QuattroWorld
2014 Audi A6 TDI Clean Diesel - Original Advertisement Print Art Car Ad J625 | eBay
Learn more about Audi TDI® Clean Diesel | Audi San Francisco
Car Report: The Audi A6 TDI — a diesel that still runs great - WTOP News
