How accurate do people generally find the estimated speeds on the
Broadband Availability Checker website - https://www.broadbandchecker.btwholesale.com/#/ADSL
The website gives estimated download speeds of 20-40mbps for my line using my telephone number.
In reality, I can only achieve 13-18mbps download. This is the speed I get with my current provider (Plusnet), plus the following providers (if I try to sign up with them) EE, BT, Utility Warehouse, Talk Talk and COOP all give speed estimates in this range with a minimum guarantee of 15mbps.
I have had an Openreach engineer visit who confirms no fault on my line.
My line is 1.2km from the cabinet I am connected to. The cabinet was installed right next to the exchange.
Is it likely at this distance I would be able to achieve up to 40mbps?
Thanks in advance for any feedback or input.