Waze does love the M6 Toll and with good reason. It's at least 10-20% quicker than the M1 or M6, mainly because you have to pay for it.
If you can give us a rough start and end point, and the route you think Waze should take you, we can have a look and see if there are any map problems causing this.
FYI, you'd have got a quicker response from someone in the UK if you had posted in the UK subforum
Oh, waze does indeed use smaller roads, better than other SatNav apps I find, but the map must be correct, etc.
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