I live in Connecticut, USA, some parts and prices for the smartcar:
Oil and filter, Walmart ($17.94) order online and pickup locally Mobil1 0w40 oil and M1-108 filters.
Headlight bulbs $25.25, Advance auto parts.
Front tires $150.36 Tires-Easy.com.
All new tires, Kumho Solus 16 Tirerack.com $348.0 + $100 mounted and replaced local independent auto repair shop.
Brake Pads ($42.54) from the local "Foreign" Auto parts store.
Air filter and cabin filter ($13.20 on Amazon), and sometimes local auto parts store.
Battery ($159.51) at Sears.
Redline MT90 GL-4 transmission oil replaced, Amazon ($43.47)
Muffler, local independent auto repair mechanic, $295.75 parts, 1.25 hrs install @ 90 per.
As you can see this is not an expensive car for it's consumable parts.
Never had a problem with getting anything for the car.
Even MB came through with a front end alignment for $106.34