2006 audi a4 sometimes wont turn over and is making a loud screeching noise.
I bet the noise is the problem. When your cranking the car over have someone under the hood of the car to determine what location of the engine that is making the noise. It might be obvious, and sometimes not.
Search Maintenance & Repair Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Maintenance & Repair Experts