RoyC

Is the key battery ok ? Try this

No. Mind you, I have never worn a set of tires out. I always change my wheels that require a different size.

DPF is a visual check only. You can rip the guts out of it but it still has to be seen to be there. Same with the EGR. But it will still have to pass emissions test. When ever my DPF light comes on I just sit on the drive and rev flat out untill it goes out.

not even worth the hassle

They look like aftermarket LEDs that the previous owner added.

Nothing wrong with that setup. Keeps things dry and out of the weather while working. Nothing worse than working on the driveway in the rain and snow.

A job well done there. No wonder it was leaking, ther's no thread left.

Point taken Steve.

You can't say that of all cars. I have 255 35 19 and have never had any wandering in 13 years.

https://www.gov.uk/government/news/new-rules-for-mot-to-test-for-diesel-particulate-filter The vehicle will automatically fail the MOT test if the filter had been fitted as standard but is found to be no longer present.

I can't see how you can delete a DPF without removing it

I'll take a couple of pics outside when I get time.

Color Nimbus Gray Q0Q0 https://www.paintscratch.com/touch_up_paint/Audi/2015-Audi-S6-Nimbus-Gray-Q0Q0.html

Try changing the wheels from side to side, see if it makes any difference. I had a set of new Dunlops once and one was faulty, used to make the car wiggle from side to side.

Why don't they show a cold and hot oil level like they do with coolant levels ?

I only do about 2k to 3k between oil changes but my oil level is still exactly the same level, as when I last changed it, it never drops.

Found this so that you can make your own mind up what to do.

LOOK HERE https://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2553889.m570.l1313&_nkw=auudi+a6+c7+door+mirror+glass&_sacat=0

https://www.sinclairaudi.co.uk/news/how-often-should-a-cambelt-be-changed-on-audi-a3/#:~:text=It is recommended that you,cambelt every 40%2C000-60%2C000 miles. When Should Audi A3 timing belt be changed? It is important your cambelt is changed at regular intervals to ensure optimum safety and performance of your Audi, it is recommended that your cambelt gets replaced every 5 years or 75,000 miles, whichever comes first.

I suppose that you've looked at all of the Youtube videos but just in case lots here https://www.youtube.com/results?search_query=Bluetooth+sign+on+dash+but+refusing+to+connect+with+iPhone

Here are my winter projects. VIDEO