Has anyone bought their lease car

[Mamalicious16]

Posting for traffic - happy for MN to move to a more relevent section if required.
DP has a lease car. Lease ends mid September. He's had an offer to buy the car ( at market value ) plus 50% of the remaining rental cost . BUT they've sent him a letter informing him he'll have to have a ( BVRA?) check before he can do this which he doesn't want to do. Has anyone any advice / experience of this please. Obviously he's had the car from new do he "knows" the car and it's history hence he wants to buy it . TIA

The only reason I can think of for them wanting a BVRLA check is because if the car is in really good condition with far lower mileage than the agreed maximum, they will withdraw their offer to let him buy it.

Thanks Lifecraft. The only concern he has about the check is that they'll see a couple of scratches, a slightly scuffed rear bumper and the chip in the windscreen. For nearly two years and 34k miles it's in fairly good condition