I owned a Smart ForTwo for 7 years, owned a first gen600cc one then a later700cc and have to say the second gen was the best. The first gen ones are under powered and although nippy in town, lack a little umpf when on longer motorway journeys. The 700cc one was best for fun, I used to get my roadie in it on occasion but the seatpost had to go down and the wheels off, but it went in, 5mins to put all that back and you are riding.
The Smart has a folding front passenger seat, folds flat but not as flat as you think, bit of a bump in it so you have to consider that.
Maintenance was easy if you took it to a Smart or Merc dealer, to change the oil you have to suck the old stuff out as there’s no sump per se. Bulbs as mentioned need the front taking off but that’s 4 screws and 2 clips for the rad grill.
I totally loved mine, I had it stage 1 chipped and it was a lovely car to drive, I really enjoyed it and miss it loads.
I’m now looking at the new gen 1ltr versions in cdi in the main cos they are free in the congestion zone, but my hankering for one is huge. Again all the features as previous gens, but a little wider and longer but not much (20mm) they are also much better built and better quality plastics.