I have an old Honda Jazz must be nearly 20 years old, and last year it had a recall because it seems water can get into the door lock, this is the problem with any car where the manufacturer has gone. There is no support, as yet no problems with parts, there is still no problem with parts for a Morris Minor, but there were a lot more Morris Minors made, and at some point it will have a problem with Parts, the Rover 75 is hardly a classic car so unlikely to be supported like the Morris Minor.
Some times however you see a car and just know it's what will suit your needs.
My wife wanted a Jaguar XE however I considered they were far too expensive so looking for a cheaper car, for us main point was it needed to tow the caravan, I was looking at spending around £12,000 and was looking for alternatives, Volvo seems good, so was walking around a Volvo dealership when we saw a Kia Sorento less than £6,000 not what we had been looking for, but we both fell in love with it.
It was only a year younger than the car we were getting rid of, however it suited our needs, and it does better MPG than the Car I had as a run about.
OK latter my wife did get the Jaguar XE it ticks all the boxes, and has loads of gadgets only £30 road tax and great MPG however I still prefer the Sorento, it may be old, and it may do much less to the gallon, to XE and only 3 Hp difference between the two and Jag is far lighter so well out preforms the Sorento, but the Sorento does not need a shoe horn to get me in and out of it.
So if you like the car then why not? Some times it does not need to make sense, it simply suits you, as the Sorento did for me, but if I look at the sensible thing then I should get rid of it, Jag will pull the caravan it does not need to be a big 4 x 4 but I like it. So if you like it then get one.