- Turbo
- Hybrid systems
- Fancy auto box (DSG, CVT)
- Issues due to or with stop/start
- Electronic door handles
- Electronic mirrors
- Electronic sun roof
- Power seats
- Power tailgate
- Heated seats
- When the infotainment screen breaks, you can't do anything because its all one system as opposed to buttons
- Software issues
- Driver assistance features
This is not an exhaustive list and also not a list of things I would exclude from my next car but pick carefully and choose your battles. I.e. I would happily buy a higher displacement turbo with a traditional automatic gearbox.
My point still remains though, if you want to keep a car for long or limit your losses on a car, you do not want (all) these headaches down the line. Pick the stuff you really want/need and do your research on the model/powertrain. Saying Toyzuki as I did is actually an oversimplification as there are good and bad models in any range.
If you have got money to burn for cool tech and will ditch it in 5 years, go for it, but then I doubt this thread would exist.