I had one car that was simultaneously the best and worst car.
It was a Vauxhall FB VX 4/90. Very plush interior, leather seats, velour trim on all doors, stunning paint in creamy white with a red flash along both sides.
It was a 1964 model I bought in 1968. It went like stink. 90 bhp back then was a lot. Twin solex carbs, ally head, larger valves than standard, 4 branch exhaust, all standard from the factory.
BUT it was based on the standard Victor that had a column change. So they fitted a convoluted linkage to a floor mounted gear lever. Bushings wore out, linkages came undone, rods broke, always at the most inconvenient time leaving you stuck in gear. Including driving to Cornwall on honeymoon. The clutch was a similar design, all rods and linkages that had the same issues. My old mans welding gear never got so much use.
It was so close to being a brilliant car, but it let me down so often, I only kept it for a year.