I bought the car new in 1976, and the electrical components kept the car in the shop over and over for the first 6 months -- first instance, all interior lights went out.
Loose lug nuts when delivered to me by the dealer.
Grinding transmission when down-shifting to 1st gear (no solution ever found.)
Trailing arm shackles loose, needed securing.
Misaligned driver's side door (always leaked no matter how many times it was re-hung and adjusted.)
Headlight switched wired in backward -- "up" meant "down" and vice versa.
Brake lights and turn signals replaced (all this is within the first month or two, on a new car.)
Factory shipping plug in trunk not removed for delivery -- trunk filled up with water from rain!
A year or two later, began going through RH front wheel bearings -- replaced several times, then suddenly the problem stopped and never happened again.
Oil level "idiot light" had a pressure sensor whose diaphragm ruptured, dumping all the engine oil onto the road.
I bought the car for its styling -- in 1976 it was unique among round-cornered American "big cars." I didn't care about the reliability issues, and in fact they gradually went away over time.
Plenty of room on the inside for me (6 ft tall) and the dash is laid out perfectly; everything visible from a comfortable driving position.
At the time it was the best-cornering car I'd ever driven. A friend had a TR6 and we had little races. He could pull away from me on straight sections, but I'd easily pass him on the turns.
Despite a reputation for poor build quality, confirmed by my own experiences in its early years, my TR7 became so reliable that for years it was my only car, and in fact I moved cross-country (600+ miles) in it with no backup.