What's the 2011 audi q5 coolant type?

Your 2011 AudiQ5 is going to need a so-called "Violet" (purple) coolant, though I want to stress that color doesn't matter. This is branding, and also, so you don't accidentally let your critters drink the anti-freeze, which tastes yummy and is incredibly poisonous for them. What you actually need to care about is whether it's a HOAT coolant or not, which is Hybrid Organic Acid Technology. Without worrying about what all that means, just know that as long as it's that, you should be good. A great compatible product for the Q5 is PEAK Original Equipment Technology European Vehicles Violet Antifreeze and Coolant, part # PEVB53. This is a premixed 50/50 blend that runs about $20 a gallon that you can pick up from AutoZone and use with the peace of mind that it's not going to corrode your radiator or cause other problems.