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Audi A4 Blue Smoke from Exhaust, Causes and How to Fix
AudiTechnical

Audi A4 Blue Smoke from Exhaust: Causes and How to Fix

Today we have a common Audi A4 problem and would like to explain this problem in detail with all the possible causes and the solutions to solve it. The Audi A4 is an athletic luxury design, impressive power output, and a technological powerhouse of a compact executive car. Many friends of mine had issues with their car’s blue smoke from...