Boourns may want to know everything that is included with THIS SPECIFIC Car.
My example of another CPO:
I have a friend who bought a CPO Signature P85 in December.
It has a new drive unit.
It has a "D" battery pack, rated at 271 miles of range.
It had four brand new tires.
It had (original) performance Leather Interior, and Carbon fiber dash and spoiler.
It has twin chargers.
It had a full pano roof.
It has the Tech package.
It has premium sound.
It has premium interior lighting (now standard).
It came with another 50,000 miles, 4 year warranty from existing mileage and date of sale.
It is a Signature, so it was one of the first 1,200 cars built.
Summary: in my opinion, he basically has a new Model S.
At least ALL the really expensive stuff has been sorted out to be new.
No, it does not have the parking sensors, or the retractable mirrors, or the longer visors or 18 or 20 other various upgrades and modifications that are now standard or available.
But all the important stuff is there.
Not saying any of the above is applicable for any other CPO (older or newer) or not, but for that Car, it all came together.
Now, if it was my money, and $41,800 is within the OP's budget for a Classic 85 with just 51K miles...
...I would say, hell yes.
IMHO, that is an extremely good value for the money.
Where do I sign?
A couple of things for OP to check:
I would check and confirm battery pack type ("A", "B", "C" or "D") that is in the car. Unless you plan on a lot of long trips using Superchargers, it won't make any difference to you. Certainly not as far as day-to-day use and charging.
I would check battery full charge mileage (range). My thoughts: it needs to be no less than 245 rated miles for a car of this mileage, probably going to be above 250 miles of range.
I would have a frank discussion and discourse with the Service Advisor about the status of what is known about the drive unit in the car, and their take on it. The good news is, the entire car is still under full Warranty for another 50K miles.
As a temporary car for the OP until Model 3, or even as a long term car, this appears to be a very good deal.
The bulk of the depreciation has already occurred, but it will continue to lose monetary value with time.
<<<<<While I was typing the above, you pulled the trigger!!!! Congratulations!!
Seems you got a great car with a "B" pack.
ENJOY!>>>>>