The Mk6 is the Golf built 2008–2012. The registration's age identifier is the quickest check: 08 to 62 plate. The V5C gives the first-registration date, and this generation's fitments apply from the first 2008 cars onwards up to the 2012 run-out.
Dip beam (low)H7VerifiedTwin-reflector halogen headlamp, separate H7 low/high bulbs
Main beam (high)H7VerifiedSeparate H7 bulb for high beam on standard halogen reflector headlamp (not shared with low beam)
Front fogHB4VerifiedStandard halogen Mk6 (S/Match/SE/Bluemotion) = HB4 (9006) in bumper fogs. GTI/GTD = H8 (fogs in grille). Previous H11 came from autodoc listing all variants; H11 is not OE on any Mk6.
Sidelight / DRLW5WVerified
Front indicatorPY21WVerifiedAmber bayonet BAU15s
Rear indicatorPY21WVerifiedAmber, 21W
Brake / tailP21/5WVerifiedBAY15d dual filament
ReverseP21WVerifiedBA15s single filament
Rear fogW21WVerifiedbirnen-typ W21W confirmed by second domain: onlinecarparts Golf VI 5K1 inner rear lamp units (Hella 2SA 009 923-131, Diederichs 2215192/93, rear fog + tail) spec W16W (reverse) + W21W (fog). Rear fog sits in left inner bootlid lamp.