I had similar hand over experience with my 2 week old pre-registered RX350. The reg document was sent to D.V.L.A. contrary to my instructions as I had a cherished number to transfer.When it eventually arrived the car was not pre-registered to the Lexus dealership but to the manager at his home address.
This in fact made it a used car not pre-reg as stated.
The invoicing was altered to reduce the value of the Lexus and my Mercedes trade in by £2,000.
This was done without my knowledge.I was told on the hand over day that they didn't have the invoice ready. I had to phone them for a copy of the invoice.
I sent the follow up questionaire to Lexus with my concerns and after 15 months have still not had a reply.
At my 1st service after 12 months with only 7,500 miles covered I was informed that the disc brakes required machining.This was carried out under warranty.It just so happens that I have run my own small garage busines for nearly 40 years and decide to check the work.The brake discs were in a worse state now because they had been machined on the car with worn machine tools.
SORRY BUT MY CAR WILL NEVER BE BACK TO LEXUS. A TOTALLY BAD EXPERIENCE FROM THE WORD GO.
PS. The RX350 is a wonderfull car returning never less than 25mpg.with 28 mpg easily on a run. Why waste your money on a hybrid.