Penny

Hi all new to the forum and stumbled here after receiving my final warning from Audi re the EA189 as Ive not had it done yet. As it's on official letter with the driving standards agency logo I'm just seeking clarification that it's is not compulsory to do. Im reticent to have the update as from reading around it's not been fabulous and has affected vehicles either in performance or caused other issues so any advice on whether to book it on or ignore it would be helpful. Thanks Prnny