I have a late 2015 Model S 70D, only ~49,000kms. No air suspension (though now I kinda wish I got it, due to otherwise very low clearance and frequent encounters with certain speed bumps and sharp driveway inclines). Seemingly very low battery degradation - AFAICT still within 2% of original rated range. Not sure if it's a factor but FWIW I mostly charge at home at 120V/12A and tend to keep the the SOC in 50~70% range.
No problems with headlights or door handles or sun roof. 12V battery replaced twice - once under warranty and once out of warranty - first time at about 1yr then second time at about 6yrs. Rear drive unit inverter replaced under warranty at about 11months/13,000kms. Rear trunk actuator seized and replaced under warranty. Passenger airbag replaced under recall. Rear parking brake calipers replaced out of warranty about a year ago. Purchased MCU2 infotainment upgrade out of pocket rather than wait for total eMMC failure and replacement under recall.
Overall, still love the car. Glad to have the free lifetime connectivity and free lifetime SuperCharging. Grey leather interior (unfortunately no longer available) still looks great, like new. Only current annoyance is that Tesla
slowed SuperCharging speeds, but that's affected all pre-2017 cars. Not really that big an issue for me in practice since I don't take long road trips very often and therefore only SC infrequently