Avoid Mercedes Benz Slough like the plague. Had a simple warranty repair (Headrests stuck in up position) to conduct to a new 8 month old Merc E220D Coupe lease car. This was in November 2018, even after countless call... No one has ever got back to me- APPALLING!. I rang them last week (26 Apr 2019) as Major service is due and politely asked if they could the repair to the headrest at the same time as major service.... Absolutely sir... someone will call you back shortly... Still damn well waiting. Ridiculous... my previous cars have been Audi and BMW and i tell you the service experience is unbelievable compared to Mercedes ! Shame on You Mercedes Slough!