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Just wondering if anyone has had issues with corrosion / white worm with their alloys? Car is only 18 months old so hoping it can be sorted with warranty…

Yes, unfortunately it happens with diamond cut alloys - often around the 2-3 year mark. The finish on diamond cut alloys isn’t particularly durable as the machined / diamond cut surface doesn’t provide a good ‘key’ for the clear lacquer to adhere to, so if it becomes damaged (e.g. by a small stone chip) and that damage isn’t repaired quickly, then water and road salt can get under the lacquer, causing white worm.

Here’s a recent case - if you use the forum search function you’ll find others.
http://www.golfgtiforum.co.uk/index.php?topic=287550.0

VW used to replace white wormed alloys under warranty without too many issues, although since Dieselgate, from what I’ve read on some forums they do seem to be taking a firmer line on warranty claims in general. IMHO VW will only replace your white wormed alloy if they consider the white worm is the result of a manufacturing defect. If the wheel shows any other signs of damage - e.g. stone chips, scuffs etc. - or it’s been refurbished before (they’ll probably take paint / lacquer thickness readings to check for signs of a previous refurb) then VW will almost certainly not replace the wheel under warranty.

I had a full set of VW Grand Prix alloys (made by Ronal) replaced on my previous Golf under warrantee when the out rim started to show signs of WW.

Today I did something terrible to my TCR, something unforgiveable and demeaning to it's status as a performance car. I filled it with three 6'×5'6" broken down fence panels and took it to the tip....

But in fairness, that's why I own a Golf

I try and time at least one tip visit during the year so it coincides with the day my car is being serviced. It’s surprising how much rubbish can be fitted into a garage courtesy car .

Quote from: Watts on Today at 11:59

Today I did something terrible to my TCR, something unforgiveable and demeaning to it's status as a performance car. I filled it with three 6'×5'6" broken down fence panels and took it to the tip....

But in fairness, that's why I own a Golf

They were probably the cleanest broken fencing ever shipped to the tip.

They were quite tidy actually and broken down into evenly sized pieces

Quote from: Adam T7 on 04 May 2021, 19:28

Quote from: ccsgti on 04 May 2021, 19:17

Quote from: Carbon VW on 02 May 2021, 14:08

Why are you changing  the gearbox oil ? It’s lifetime fluid. It’s 2.3litres capacity G 052 527 02 is the OEM spec

Thank you. Reason is preventative maintenance. Nothing more.

I remember previous cars with ‘lifetime fluids’ - need to define ‘lifetime’, after 100k, the transfer and diff. oil was a horrible dark brown and the AT fluid equally horrible. Car never abused. Totally agree with the preventative maintenance concept.

Manufacturers definition of "lifetime fluids" tends to lean towards the warranty period being the vehicles "lifetime". Certainly no fluids that work forever on a car without being serviced/changed.

The OP quoted the car has 45k miles. No way that gearbox needs an oil change. My motto for manual gearboxes is not to fix it if it aint broke. There are horror stories online about introducing problems into the system by changing the fluid.
If i notice gearshift notchy or not what it should be then I would change it, otherwise leave it be. And im OCD about all the other fluids, I change the oil in mine every 10k km.