The Requirements

 Working on your Audi is a daunting task. It seems scary looking into the engine bay. Perfectly engineered to house everything in a tight and efficient package. It seems as if no space was left empty without a reason. But don't let that scare you off. Audi's may seem scary when looking at them, but they are held together by the same nuts and bolts any other car is. Audi just likes to use bolts with fancy heads on them. Audi is notorious for affixing a single part on with two different types of bolts. It's one of the few things that has always bothered me about working on my car. Why do I need to switch my 10mm out for an Allen every 5 seconds!! But that is beside the point. The purpose of this post isn't to rant about how Audi bolts things to their cars. It's to let you know what tool you will be required to have. Without these sets of tools, you won't be able to take basically anything off your vehicle to fix it. 

To start off the most common tools and the ones you most likely already have. The Standard Hex sockets. These come in 6 and 12 point. I recommend having a set of both, but you can get away with just a 12 point set if you don't run into a lot of stuck bolts. For sizes, you will need a full range of sizes from 8mm up to 22mm. You will use the 8mm, 10mm, 13mm, 16mm, 17mm, 18mm, and 22mm the most frequently. But it is always good to have the middle sizes just in case.

The next thing you will need is an Allen set. I HIGHLY recommend a set of Allen sockets. Not just the standard wrench type you get with furniture. I have seen people use just the wrenches and it hurt my fingers just watching. For sizes, you will need all the metric sizes. 4mm, 5mm, 6mm, 7mm, 8mm, and 10mm. I would also recommend a set in 3/8 drive and 1/4 drive as you may be working in rather right areas.

The next important tool type is Torx's or star bits. Again you will need all the sizes. From t-15 all the way to t-55. I recommend a set that comes with the smaller sizes in 1/4 drive the medium sizes in 3/8 and the bigger sizes in 1/4. 

The last two types of tools you will need are what 5 years ago would have been considered "special" tools but are now being used more commonly. These are the E-Torx or inverse Torx and the Triple Square. Both of these will come in kits. Unless of course, you buy them from someone like snap-on or mac tools that's specialty is screwing you over and charging per socket. 

Although these are not EVERY tool you will need they will get you started. There are of course specialty tools that pertain to certain models or certain engines but those aren't required in most repairs. But unfortunately, you can't start and finish most repairs with just a standard 6-point metric set anymore. So it's important to know what you'll need before you even start trying to tear anything apart.