Stock 2016 from new.
Don't recall mileage but it's <80k I think.
I usually drive it like I stole it
(minus the wrecks, red light running and side-swiping other vehicles) and has been solid.
(chose to leave drivetrain stock)
No issues with interior.
Everything except license plate and high beam is LED.
Replaced stock rear (Spec-D) and front (Euro Projectors) lights..
Added 600RMS Alpine amp, harmon kardon 10" tube with dual voice coil Kicker sub wired for 2 ohm.
Added a push button and relay system for my accessories.
https://www.fiestastforum.com/threads/guide-amp-remote-turn-on-relay-12v-outlets.29095/
Switched to 215/45R17.
Water intrusion issue from new; self addressed; I have a thread on it.
Had to replace the CR2032 battery in the remote twice.
Few new car batteries; due to leakage I **ONLY** do sealed batteries not vented.
Replaced one blend door actuator with Dorman brand.
Replaced passenger side engine mount; caused a knock noise on clutch release.
Bought a new relay for the HVAC.
Replaced engine fan relay under recall. (no issues)
Regular anti-rust treatments.
Had to replace rear brake pads first; front maybe like a year or two later.
Resolved issue with a rear caliper slide mount locking up...
https://www.fiestastforum.com/threads/caliper-slide-mounts-the-permanent-fix.29023/
Added an aluminum angle bar to the rear shelf to keep from sagging.
Garbage bagged and lubed my spare tire to keep from dry-rotting.
All fluids (oil coolant brake) maintained.