Tried using sat nav from Plymouth to essex but gave up, used my own brain sat nav, as been to Cornwall before, around London don't really need it as I'm a London taxi driver,sat nav around London is useless,too many buildings. Not too concerned about USB or auxiliary connection, had it on my is220d, didn't use it in 2yrs, but did want Bluetooth. If I go outside London prefer tomtom, it's much easier @ quicker to use.