We usually use Skoda's built-in navigation system but find that the information is out of date, specifically the speed limits. For example on the M1 around junction 16 where there has been 50mph speed limits but been removed for sometime. The system still thinks that the speed limits are 50 when they are clearly 70mph. This causes confusion, unexpected braking and annoyance. My other half is convinced that the navigation data is not being updated. Question therefore, how often is the data updated and how do we check that we are getting them? We do pay for the automatic updates by the way.

A dangerous example of the lack of updates. I was leaving a 30mph zone and entering a new 40mph zone which has just been added and rightly so. On automatic cruise control, I left the 30mph zone and the car suddenly accelerated too quickly for my liking towards 60mph, the old speed limit. This was, given the traffic conditions, dangerous. Anyone else having these problems? (The 40 sign wasn't recognised even though every confounded green advisory sign is!)

I've had to switch off in my 23 Octavia the link between the car's idea of the speed limit and the ACC target. I've had the same as you on the M4: several times my chosen cruise speed was suddenly upped to 70 when I reached the end of a former 50mph temporary limit.

To do this you go into ACC settings and switch off "Speed limit preview".

But it remains poor that the car thinks so many sections of former roadworks are still 50 mph. If the map data is only updated a couple of times a year (if that), it shouldn't have temporary limits in at all, as they will be long gone before the map is next updated. And why isn't the camera being relied upon more to make use of observed signs, or absence thereof?