60k and ONLY worn tires!
That's great!
The 03' Envoy only went 147k before it decided to "kill" itself (cause of engine demise still unknown).
On the Other Hand, my dad's 97' Nissan Pickup is sitting on 187k with some cosmetic issues (rust, fading) but no engine problems to worry about.
Your smart is a testament that the new smarts* are just as reliable as any American car on our roads.
*By now, if you had a 450 you'd be nearing that engine rebuild if not requiring it already (range: 50k-150k)