The W204 is the C-Class built 2007–2014. The registration's age identifier is the quickest check: 07 to 64 plate. The V5C gives the first-registration date, and this generation's fitments apply from the first 2007 cars onwards up to the 2014 run-out.
Year
Plates issued
Generation
2007
07 / 57
C-Class W204
2008
08 / 58
C-Class W204
2009
09 / 59
C-Class W204
2010
10 / 60
C-Class W204
2011
11 / 61
C-Class W204
2012
12 / 62
C-Class W204
2013
13 / 63
C-Class W204
2014
14 / 64
C-Class W204
Bulbs
2007–2014 · bulbs9/10 verified
Dip beam (low)H7VerifiedHalogen base spec; Bi-Xenon ILS variants (mainly 2011+ facelift) use D1S instead
Main beam (high)H7VerifiedSame H7 type as dip beam on halogen cars; separate H7 reflector retained on xenon cars
Front fogH11Verifiedagmvision lists H11 (H7 shown only as an alternative for some units); US H8/H11 charts not used
Sidelight / DRLW5WVerifiedSidelight W5W; separate DRL is LED in the headlamp unit (non-replaceable) on UK trims that have it
Front indicatorPY21WVerifiedAmber PY21W (BAU15s) agreed by three domains; some later ILS/xenon headlamp units are listed with PWY24W - check the holder before buying
Rear indicatorPY21WVerifiedAmber PY21W in the outer wing cluster; agmvision and the Hella OE cluster spec agree
Brake / tailP21WVerifiedSeparate P21W brake and P21W tail bulbs in the wing cluster (no P21/5W); facelift LED-look clusters keep the bulb holders
ReverseW16WVerifiedW2.1x9.5d/T15 in the outer body-mounted cluster (the boot-lid lamp carries tail/reflector). Hella OE inner-cluster extract and MBClub UK owners agree; birnen-typ's P21W rejected - that page also wrongly claims LED rear indicators and a C5W plate.
Rear fogP21WVerified
Number plateC5WLikelyNo handbook table reached to settle it
RearN/AVerifiedOften listed as 11". W204 saloon (base body) has no rear wiper; both retailers list a rear blade only under the S204 estate, where it is 11"/280mm elsewhere; that is wrong for this car.
ConnectorSide pinLikelywiperblades.co.uk states Side Pin for the front arms; autodoc lists Side Lock, Top Lock and Hook variants together for the model range, so the two domains do not cleanly agree