I have a 2010 Audi A4 2.0T Quattro. Here are the facts:
- I had an oil change several months ago performed by a shop that is quite familiar with this kind of car and has a very good reputation.
- About a month after the oil change, my Audi suddenly complained that it was very low on oil. I should add a quart and continue to drive. So I did.
- I made an appointment to get it fixed, but that appointment was several days out, so I continued to drive the car. I kept oil with me in the car because this was a daily occurrence.
- The day before the appointment, the car said it had no oil and was shutting down to avoid engine damage. (Or something to that effect.) I had it towed to my house because in the interim it turned out I had to fly out of town and had to cancel the appointment. I'm still out of town as I write this.
- I saw no evidence of an oil leak.
- I saw no evidence of oil leaking into the engine block, such as smoke coming out.
- The car performed beautifully until it didn't.
Full disclosure: I'm a software engineer whose knowledge of engines is not zero, but is rudimentary at best. But this is very strange to me. I've had oil leaks before (in other cars) and they are either visible on the ground when parked or cause the engine block to smoke or both.
- Extremely fast oil consumption. A quart a day or more over several days.
- No evidence of an oil leak.
Any thoughts on what this could be?