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Ive pinned this at the top of the section as your walk through was great. Really think it'll help other members 🙂

I suppose it depends on the age of the Audi. In my case I would be worried about using main dealers now but my a6 is 19 years old. However my wife and I both use main dealers for our modern daily drivers (mine Ford kuga, hers a jag both under 5 years old).

Sorry no one has responded. Truthfully I've never bothered with anything like this. And after 335k miles (all done by my dad and I) I'm not too worried. The biggest issue on modern diesels are dpfs clogging.

Think you'll have to change the light units in my opinion.

Just thought I would update my post as no one really had the answer to my question. I did the gearbox oil change today on my 2016 Q7 4M on 80k miles. While it was messy and fiddly I did it on my drive without too many issues in 3 hours. Anyone thinking of doing this here are some notes: The gearbox is a ZF 8 Speed and you need to order the ZF kit which contains 7 Litres of oil, the sump tray (which contains the oil filter and magnets), fill plug and bolts. I ordered mine from Autodoc for £189 and it arrived in a few days. You'll need some diagnostic equipment so you can read the gearbox oil temperature. Lift car on ramps/axle stands so it remains level Remove underbody shield Undo fill plug (10mm Allen Key) Remove Drain plug and drain oil Support the rear of the geabox Remove geabox rear support bracket Remove pan cover screws Lubricate new sealing ring Clean the gearbox mating surface Install new pan using cris cross method Reinstall gearbox rear mount Fill gearbox until oil flows back out Start the engine Maintain 2000rpm for 20 seconds to fill the torque converter Change manually into reverse and hold for 10 seconds then into first and hold for 10 seconds Check transmission fluid temperate is between 30c and 40c Now top up fluid with engine running until it fluid runs out again When fluid coming out is down to a few drops reinstall fill plug and tighten to 35Nm Reinstall under body tray I hope this helps someone.

After spending £2.5k on the wife’s Mini, having a rebuilt transmission at 80k, I was advised to change the oil every 35k. Expect to pay around £200 for an oil change. Get the filter replaced too. If doing yourself, read up about temperature. If you drain the oil cold you’ll leave loads of crap in there. Might pay to go to a transmission place rather than a garage. They may be able to tell you their thoughts on the condition of the transmission after seeing the oil and taking a test drive. And start putting some pennies away each month ready for the £2.5k - £3k rebuild. Any auto of that mileage is expecting a rebuild. May never happen, but be prepared. If it came with the tow bar, then make the oil change urgent. Don’t mean to scare monger, but the transmission needs looking after too. Even if the manufacturers think it doesn’t. Audi don’t make transmissions, so what do they know lol.