Depending on which figures you believe, up to 15 percent of the UK’s roads change each year.
That means your satnav’s maps will become less accurate as time goes on.
Regardless of which method, you’ll also need to install the software that came on a CD, but it’s better to check the manufacturer’s website for the latest software.
Don't forget that your satnav's software (as opposed to the maps) may also need updating, so look for 'firmware' or software updates for your particular model on the manufacturer's website support section.
New roads and housing estates are built, existing roads can be changed from two-way to one-way streets or pedestrianised and new junctions and roundabouts are added.
At worst you’ll end up in the wrong place, unable to find your destination, or you might simply be late.
The only choice is to find a relative small map that can fit in 2GB space.