That's good.
Ah! The joys of a used car. Some would argue you should walk away from a car with an ECU light on on a test drive. If nothing else what was the dealer thinking when he let you drive it?
You can't really blame the car for that.
Again, it's not unusual for wheel bolts to bind on these days when wheels are removed so infrequently. On a 'low mileage' car the wheels might never have been off as you don't need to take the wheels off to check the brakes and if it has not required tyres then they wouldn't have been off. As for your breaker bar...
Again, hardly the fault of the car.
Well, when they respray the car I'm sure you can persuade them to do the wheel arch too.
I have a thing about the number 13 but I somehow managed to lease a 13 reg SLK. In the first year it was fine, but in the second year I had a no-fault accident where I was clipped in a car park while absent but someone saw the other car and collared them. I then was hit, again while stationary, by a French driver when managed somehow to persuade me to sign a constat d'accord form saying it was all my fault. Bad news!
But none of it was the car. The car can't be a Jonah. If you really think it's a Jonah, get a black cat to either walk across the path of the car or sit it in the drivers seat, preferably willingly. There's not much old sailors don't know about Jonah's!
Good luck!