I suspect a lot of dealers prefer the ambiguity that this scenario creates (i.e. you can't prove it's not had work done to schedule 'because GDPR')
I always keep every bit of paper relating to any car I own - I'd be distraught if that went astray if it was sold on via a dealer, due to some numpty deciding it was easier to bin it, than think about it.
Both my S5 and Golf have lever arch file full of paperwork, and the S8 was almost into its second volume when I sold it!
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===SOLD===2002 Audi S8 D2 Final Edition (yes, really) in Avus Silver with purple extended leather===SOLD===
2011 S5 Sportback in Phantom Black with black Super Sports leather, 9x20s, tech pack high, adaptive xenon plus, intelligent key, memory seats pack, sunroof, B&O, Audi Drive Select & quattro Sports Diff, DAB, parking system plus
2015 VW Golf GTI Performance Pack in Carbon Grey with black Vienna leather, tech pack (Discovery Pro nav & Dynaudio), DCC, factory towbar and retrofit RVC
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