I have been a long time fan and owner of Audi Vehicles. Specifically since 2004. Currently I own a 2014 A4 with approximately 57,000 miles. Recently I was driving on the highway and lost considerable compression in the engine. It was recently diagnosed by an Audi dealership that conducted a compression text on Cylinder #4 at 60 PSI. The quote to fix was extremely expensive. I very disappointed this happen to my vehicle which is only 6 years old, well maintained, and only 57,000 miles. Again, I'm a big fan of Audi. Has anyone experience a similar challenge with their Audi? Thank you.