I was very disappointed in this DLC.
It may say Liverpool, but it didn't feel like Liverpool in any way. The only thing going for it's description of Liverpool is the River Mersey. Everything else just isn't anything like it should have been. Taking that River Mersey as the starting point, this includes Birkenhead, Bebington, Bootle, Knowsley, but each is just a splodge of random roads and buildings. Okay, this isn't a real life simulator, but it's just badly executed. First off, you have one bridge over the Mersey. However, there isn't a bridge there, just two tunnels.
The game still hasn't cracked the left hand side running, so Liverpool shouldn't have even entered their minds, compounded with the lack of roundabouts, the signs being European instead of UK...
If we ignore these obvious problems, and think of this as just another random map, you hit other problems. The roads between the splodes of settlements are just two lane that quickly back up with traffic. After just a few simulated weeks, every bus route is stacked in 24/7 traffic jams that just don't move. The only way to get any enjoyment of the map is to demolish the roads linking these splodges and replace them with bus lanes if you want to run buses over them. The quests are ill-defined, randomly generated, and taking places that either get swallowed up by new developments, or just plainly don't look like they are right in the first place (Shopping Centre amongst all the small houses?). There's no coherent storyline, no quests that are fitting to the places, and feels just like a community workshop download (in fact, some of the community workshop downloads offer a far better experience).
In short, there are far better Community Workshop Downloads that don't cost you anything and offer a far better experience. Don't bother with this DLC.