I happen to know a bit about coils myself and why they fail + have some part numbers on the brain, did you know that?
Usually when a part number traditionally "doesn't" fail, the number doesn't change or due to a vendor that produced it, don't you know that merely from reading the forensic damage code books and microfiche from VAG?
How come coils with this number were campaigned too & during and after your stint you aforementioned in the sloppy VAG 06A-905-097 how come it never changed, but was long before campaigned due same issues as in 1.8T and superseded to part 06A-905-097A & only after 2014, but why?
It was produced for the factory by Temic/Telefunken/Eldor/Bosch/Beru/STI-KARYLYN and all under the same part number, but how come?
Than of course there was 06B-905-115E with integrated power stage & that was produced by Hitachi for Jokeswagen 1996> and never was superseded NEVER TO DATE, nor did it really ever fail, huh.... I wonder why & that went to the shitty 1.8T?
Than there was 078-905-104 and didn't change in the ATQ V6 until 2010 078-905-104A but was recalled & long before the same part number from many vendors, why?
I just question stuff and am busting your balls..........all in good fun.