After 18 months in the E350 estate I finally got round to fitting DAB in it last week. Now I know DAB is low bitrate, but worth it for 5 Live without the constant AM noise that all Mercs tend to have. DAB unit £100 eBay Harness £120 from davidsauto on eBay VW DAB arial for £12 on eBay. Plug and Play and took around an hour to fit. Seems to be a better reception than the factory fit aerial too as the DAB on my old car used to cut out up at the coast where as this is fine.