I used to sell motability cars a few years ago for Ford and they make usually make a good used buy.
I’m not fully up to speed with the current motability contract, but I can’t imagine it’s changed that much if at all.
People would basically get a new car on a 3 year contract and in that time they were limited by the amount of mileage they could do a year, which from memory was either 10k or 12k.
They did however get free servicing so the vehicles usually wanted for nothing.
Very few of the cars I sold had any adaptions and most came back after the 3 years unabused and very low mileage.
There are some bad ones out there though and some folks have been known to either get a motability car for another family member to use or to even alter the mileage.
I was once ordered a taxi to get home after a night out only to be collected in a vehicle I had sold on motability 6 months earlier!!!
The overall condition of the vehicle though will be a good indication of what life it’s led.