Hi guys.. newbie here

I am very interested in a Nissan Note that a trader is selling but the HPI check that i did has raised a few questions regarding mileage. Now i dont understand how the figures can be way off. I know the car was MOT June 2009 which show 28K thats fine and then it goes up to 40k then down to just 40 ????

I did the check last night and entered 38k (according to the seller) as the current mileage and now that has become an entry, so could this mean that anyone like me could have entered incorrect mileage when they also did a HPI check ? im really confused. The car is a 2006 note that has been serviced by Nissan garage last year and the seller has provided all the other info (Log book data ) that has come back as correct and no other issues. The car has a currant MOT that indicates 38k

It just not make any sense.. from 40,000 to 40 ?? that must be a typo on the part of someone who did a HPI in the past ??

can anyone shed any light please

Alert Details
National Mileage Register
Data currently held on the National Mileage Register (NMR) indicates that there may be a mileage discrepancy on this vehicle.
Mileages as recorded by the National Mileage Register
Date recorded Recorded by Mileage reading Total
11-Jun-2009 NMR 28,000 28,000
20-Aug-2009 NMR 40,000 40,000
28-Aug-2009 NMR 40 40
17-Feb-2010 NMR 30,000 30,000
18-Feb-2010 NMR 30 30
26-Feb-2010 NMR 30 30
26-Feb-2010 NMR 30,000 30,000
26-Sep-2010 NMR 38,000 38,000