Let’s play a word association game; when I say diesel what words come to mind? If you said: smelly, loud, sluggish, and/or boring you would be correct when referring to old diesels but you would be very wrong when talking about what is currently available. Need further proof of this? The Audi A3 TDI is here and more than happy to oblige.
The first thing I noticed when turning the key of this A3 TDI is the 2.0L turbo diesel comes to life not with a sputter and burble, but with a quiet purr. There is no old diesel rumbling, no old diesel exhaust stench and no old diesel noise. This new clean diesel technology in the Audi is run on common rail direct injection and piezoelectric injectors for smooth and efficient performance at all speeds.
Source: NADA guides