Your Audi is a big, powerfully engineered investment. Such an investment needs to be vigilantly protected, and below are a couple of helpful articles we've published that will arm you with valuable knowledge that should help prevent costly repairs, extend your Audi's lifespan, and keep it in peak condition. 1. Carbon build up on Audi Engines Affecting Your Audi Fuel Economy & Audi Engine Performance Carbon build up in your Audi is an inevitability because over time carbon deposits will build up on the intake valves. This then leads to reduced performance & fuel economy by your Audi engine, which you can read about in more depth in this article. And when you drive Audi, the last thing you want is reduced performance & increase in money you have ... read more