E70 3rd seat row and vin

[mxxxs]

Hi,

I am ready to buy a used 2008 x5 3.0sd with 7 seats.
The extra seats are missing though, and the owner told me that they were removed just to have more space.
The car is imported from Germany, and its documents show it as a 7 seats car.
But, when i check the vin, the 3rd seats row is not showing in the results like all the other equipment.
I checked the vin of another x5 with 7 seats of a friend of mine, and the 3rd seats row is showing with code S4UB.

Does anybody know if this is normal, or the car is not with 7 seats but it is somehow registered like a 7seat?

Thanks in advance