u/Stray-7

It's at 130k miles, £3000, MOT history is super clean with full passes and a few advisories. Seller has mentioned an intermittent ABS fault which was investigated to be the pump. Otherwise, no issues. I'm wary about N53s because I'm not very mechanically minded and if something goes wrong with the common problems (NOx, HPFP, injectors etc.) then I'm pretty much doomed to take it to a tech. Are N53s really as bad as they say, especially around this mileage? Or am I relatively safe if I do my research?