Did you get it done in the end? and what mileage/time did change yours at? did you end up paying £800+?
I'm sat with the dilemma with mine, it's on 193000 miles now and is starting to look get a bit tatty (rust patch on the boot lid and the saggy headliner).. got a little water leak that i can't solve and is overdue a cambelt.. (plus could do with a turbo really) but i've only been doing 2.5-3k miles a year in it now a days.. (still been changing the oil every year mind you.. can't not lol)
I was always on the 5yrs 60k miles with mine & my 8p A3 that i also have but i'm way over due on time with mine now (think it was october 2019), but mileage wise i've only done 23k miles since it was last done.. I did get a quote of around £430 for cambelt and waterpump which i was surprised at to be honest, i thought it was going to be nearer the £700+ mark now a days, but they did mention that Audi don't state a 'time' anymore.. just mileage (but my thinking is that's maybe more for more modern non PD cars? i don't know).. if my car was worth something i'd stick to the old skool time frames as i do with oil changes but with the low mileage i've done and the fact it's not really worth much now i'm torn with what to do.. just wish i could do these jobs myself.