I think that there is still some nervousness in owners, and some workshops minds over the "quite longer than long" mileage/years that is currently given for this job, probably based on previous mileages/years offered by many other manufacturers - and then dropped back quite a bit when experiences proved that some mileages/years quoted did not tie in with real world workshops and owners personal experience. Having said that, I waited until 10 years and 55,000 miles had passed before I handed my wife's 2015 VW Polo 1.2TSI in for this job, okay it "only" cost £650ish at VW Group proper Indie as that car does not have ACT and so the labour time is a lot shorter. So, to the OP, I'd suggest leaving that job for now, my mate "through West" has a late 2019 VW T-ROC 1.5TSI 150PS and he has asked me about when should he get this task done, a very tricky question to answer maybe, he will have done a lot more miles than my wife's 2015 Polo, giving a friend this sort of advice, ie "I'd leave it for now", and then "bang" is not what I'd hope to happen. At the end of the day, if you, the buyer and owner, plans to keep this car for another say 8 years/50,000miles, then why not just get it done at around the 10 years mark so that you can hopefully stop worrying about it and also make some use out of spending that sort of money. Edit:- oh, and the "money taker" at that local VW Group proper Indie said to me as I was heading back out after collecting the Polo, "that will be you for another 5 years" - I turned round and muttered something and gave him a funny look!