I tried to enter a 7 digit postcde on my built in sat nav, and found that it would apparently only accept the first 4 digits, after which the keypad 'greyed out'. The manual merely says click on ...

This publication contains information on geography, demographics, housing, socio-economic class and income for all 6-digit postcode areas in the Netherlands. Disposable household income by 20%-groups ...

I contacted Mercedes-Benz after reading here that someone had complained to them that their Sat Nav wouldn't accept a full postcode and they upgraded his unit. When I contacted them about my 2011 ...