an audi is nothing more than an expensive volkswagon and has the exact same issues once it gets past 100,000 miles, these cars are well known for expensive repairs and engine transmission and electrical problems. You need to stop going online for quotes that is your second mistake (first being looking at used audi) these online sites get personal intormation and set up mailing lists, which they compile and later sell, so all the spam, cold calls on telephone for sales pitches, and any junk mail advertising this is how you get it, its followed by an excessive quote no one in thier right mind would take. Once you have a car, use the yellow pages and call as many insurance agents as you can stand. (I can usually call 10 or 12 before I want to barf) Find out the minimum limits and keep notes as to price and phone number. I know in the USA its possible for a family member to add you to their policy and get you lower rates. I dont know about where you live. From the feedback on here before, you should be able to get much better quotes for 600 to 800 pounds, (sorry dont have the cool little thingy) if this is your first insurance policy the rates will be higher as you are a high risk, they will come down at the end of the first policy period, when you get a renewal notice, this is like gold, any other insurance company will write you a policy, so once the renewal comes make some calls you may do a lot better for the next policy term. Always take a used car to a mechanic, (you cant afford not too.) and I like to do a cold start test drive on any used car after it has been parked at least overnight, start it up, listen carefully to the motor, there should be no loud bangs, it should run smooth and quiet. and no smoke clouds. Give it a minute or two to warm up then take off and drive it like you stole it. Any used car that will get up to freeway speed ( 55 miles per hour) in the first 5 to 7 minutes when cold, is probably in pretty good shape. Take the car for a 40 minute to an hour test drive and then take it to the mechanic and get a good inspection. If anyone will not let you do an extended test drive or go take the car to a mechanic, walk away, do not buy it.
Here is a good website with free information on how to buy a used car, what to look for and what to look out for, the information will be useful no matter where the used car is from. Patience is your best defense against a crappy car. never get in a hurry and make a bad decision, put it off until the next day if possible after a good nights rest. I like cars owned by older adults who live in good neighborhoods. This is important because a car owned by someone in the low rent district has missed maintenance for sure, and had a hard life. Find the jewel in the desert, not the everyday wrecks. best of luck hang in there some times it is hard to find a good car.