Injector & Turbo service life? 1.6 77kW TDI CR

Hi, is any expert opinion available on the expected service life of the injectors and turbocharger (and other expensive bits such as injector pump) on my Octavia Mk3, 1.6 77kW TDI CR (222,000 kms)?

I have two reasons for asking - one is to do the math on keeping the car to end of life vs trading.

The other reason is that my lady's Peugeot 308 1.6 e-HDi has had two injectors fail over the past year at 163,000 and 178,000 kms respectively. We get our fuel from mostly the same outlets.