Well then...

Most Audi dealers take list price on parts and then mark it up another 25%.

If you price out EGTs or O2s you will spend in the 1000s for them.

The car will function with a failed EGT but not a O2. So if I were to go with one or the other I would do the O2s. Primary only

Price out the dealer for the parts then go to Genuineaudiparts.com for a quote.

Quote Originally Posted by RS6bear View Post
I have coverage from Zurich Insurance for 2 years; I will only be driving the car ~5,000 miles/year, so I don't know as anything else (O2 sensors and EGT sensors) are really likely to fail during the remainder of my coverage.

The transmission is rough in upper 2nd gear, and there's something funky with 3rd -- when I floor it and it drops into 3rd, it can be very jerky. Also, twice when stopping at a stop light, when I went to start up again, the transmission locked itself into 4th gear (a protection mechanism).

The last 4 digits of my VIN are: 5115

Thank you for all the advice (everyone), including the notes about the oil cooler nipple. :-)