What do you base this on? Air Suspension is robust technology at this point. We've had Mercedes Airmatic in cars for 5+ years of ownership with no issues.
Well I can base my experience with air suspension on my E55 AMG and my Bentley Continental GT - both with air suspension - both failed eventually between5 and 8 years old. This has nothing to do with air suspension being a new or "mature" technology - it's simply the fact that as rubber ages it will spring leaks. 5 years is not very long for an air suspension - if you keep it long enough eventually the rubber bellows will spring leaks and you'll need new ones. This is a well known fact about air suspensions. They are very expensive to replace - my Benz was almost $6,000 to do all four if I recall, and my Bentley was $2,000 to do the right front which failed.
At first the leak may be small and the car's pump will keep it pressurized - eventually it will leak more and the pump will not be enough, and you'll wake up to a car sitting low on its haunches in the garage in the morning.
The Teslas are so new that the air suspensions haven't aged to the point where this problem has shown itself en masse - but it will.
If you're getting rid of your car in the next couple years you're probably fine - but if you intend to drive it 100K, 200K + miles and a decade or more you are in for problems eventually.
Traditional coilover suspensions are always cheaper in the long run by a significant margin - both to maintain and to replace as they wear. Springs last almost forever - you can simply change out the gas shocks every 50K miles if you want that new car handling to stay new - and it's really cheap - a few hours of labor at your local mechanic and maybe $100-$300 per shock.
Nothing wrong with air suspensions though - they're a luxury good and you pay to play.
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We've had Mercedes Airmatic in cars for 5+ years of ownership with no issues.
Then you have been lucky so far - the Mercedes forums are littered with people discussing failing airmatics. Air suspensions are so problematic that a third party company has found a market niche selling cheaper engineered replacements for when the OEM's eventually bite the dust - look up Arnott.
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Air suspension has been around much longer than 10 years. I don't consider 5 years to be a long ownership period. Once you get a price quote to fix air suspension out of warranty on a Model S, you may rethink(if you keep cars longer than 5 years of course).
THIS - he's completely right.
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Oh, come on now. I agree that 5y of ownership isn't long, but...
Just about any major component that needs to be fixed out of warranty is going to be a big ticket item.
Do you have much experience with tuning cars / tracking / upgrading? If you are familiar with suspensions you'll know that coil/shock traditional suspensions are: 1 - Much cheaper to replace than air suspensions - they're not even close to being comparable items in terms of cost to fix. 2 - Last longer without failing (though shocks do degrade over time - some more than others - and it's always good to replace them also - I've done the shocks on my QX56 twice now as it's at 230K miles since I bought it new).
Air suspension is a luxury good, nice to have - I'm getting it on my Tesla - but just be aware that it significantly raises the cost of ownership if you intend to keep the car a very long time and put a ton of miles on it.
This claim that EV's will be super cheap to own and last 20 years only applies to simple EV's like the Nissan Leaf. Cars like the Tesla will eat us alive with repair costs at the 10+ year mark because of the expensive electronics. Eventually those displays, computer chips, wiring, air pumps etc are going to start failing with age.