#1. Oil consumption - when I purchased this car it used 1 qt oil every 1k to 1100k miles. I took it to the dealer. They worked on electronics and breather and added oil. They told me to drive it until the oil light came on. Record the miles driven. Bring it back for further tests. They took sample of oil and found metal in the oil. I was told that from 2009 - 2012, there was slag on the piston rings causing oil to drip and burn causing excess use of oil. Dealer replaced Pistons and rings. My car does not use any oil. Can go oil change to oil change without adding any oil. #2. Turbo - At approx 51 k miles, engine light came on. Took car to dealer for diagnostics. Turned out to be faulty turbo. Audi extended warranty of 7 years or 70k miles covered this repair. #3. Water pump - Replaced at approx 40k miles. Out of pocket expense. Approx $600.00. #4. Fuel injectors - While I have not had any problems with fuel injectors, there is extended warranty on the injectors of 12 years or 100k miles.
I bought the car certified pre owned in 2011 with 13k miles on it. Before 20k the oil light kept coming on. Took it to the dealer who said it was "normal" to use a lot of oil cause it's a turbo. Took it back to the dealer when we had to start putting a quart or more of oil in every 1000 miles. They had to go thru a 3 step process to "prove" the car had an oil consumption problem which involved 4 visits to the shop over the course of the better part of a year. They finally had to basically rebuild the top half of the engine. This was around 60k miles. Fast forward to just over 100k miles and the timing chain tensioner failed. Car was of course just out of warranty and despite technical bulletins on the issue and a class action lawsuit the Audi dealership didn't cut us any slack on the repair quote. Over $13k to rebuild the engine or $20k for a new one. We took it to a 3rd party shop and managed to get the work done for a "mere" $7k. The ignition coils have failed 3 times in the last year. Random lights keep failing. Fuel pump went bad at 112k miles. Car is now just around 120k miles and has multiple EPC faults, idles rough and randomly dies at low speeds. It's been in the shop 3 times in the last 3 months, still not fixed. This is without a doubt the worst vehicle I've ever owned. I once drove a 1972 Ford Ltd in the 90s that was more reliable. I would never buy another Audi and the only reason I'm still (attempting) to drive this one is its paid off. Except for the repair bills, those keep coming!
I absolutely loved this car until there were oil problems at 2500 miles. At usage of 1500 miles (I bought it with 1000 on it), my car indicated low oil. As it had not been leaking, my car was burning it. Audi of America and the dealer said this was in spec, that turbo engines burned it. They offered to put a quart in every time. They could not answer to the long-term ramifications however and did not want to fix it. Had I known that my car required a quart of oil per 1500 miles I would not have purchased it because something seems wrong here. ONLY the 09-10 A4s do this. Turbo engines shouldn't burn that much. It affects my fuel efficiency and has taken away the joy of owning a new car.
A review to all those having oil consumption problems: I bought my '10 a4 2.0t about a year ago off of a lease with about 16k on it. I was sick of bringing it to the dealer where I purchased it from for a top of because of the "oil min" light. IT IS NOT NORMAL. Switched my servicing to another Audi Dealer in the DC area, and they learned that my turbo and pistons were not made up to par with what my car required (something about a bad batch). Both my turbo and all oil parts were just replaced in hopes that it will solve the problem and will cause less oil to be burned without necessity. As long as you are persistant, they will fix the problem. Just don't bring it to a dbag dealer
I bought my A4 used at ~38k miles. Its a comfortable, fun car to drive. Great on gas, accelerates quite quickly, and with snow tires, it's a champ in the Michigan winters. However, its been a maintenance nightmare. Shortly after I bought it, the water pump started leaking. Thankfully, that was replaced under warranty. Next, the blower for the front defroster went out. Then it started burning oil badly. Turns out this is a common problem, and the fix was basically rebuilding the engine and replacing all of the pistons. Again, covered under warranty. But, while doing that work, they discovered that the timing chain was in need of replacing as well, which was not covered under warranty. And now, not more than 2 weeks after having that work done, the motor controlling the locks on the drivers door stopped working so I can't lock my car. This has been my first Audi, and it will also be my last.