The ACE platform provides longer oil change intervals and no valve adjustments necessary due to the unique valve spring hydraulic lifter cap design. Also, the front glove box is easily removed via push pin pulling and it exposes the valve cover, spark plugs and coil packs for very easy plug service. The air filter and CVT air filter take the same filter unit and are easily accessed by popping the covers off of the side (which are held by pins in rubber). The driveshaft is enclosed and maintenance free. The CVT belt is a maintenance item replaceable approx every 12,000 miles and supposedly uses the Ski Doo 850 ETec belt ($184.99). Getting to the belt is pretty easy. They demonstrated it by removing approx 6 mounting bolts, then turning the handlebars and pivoting up the whole rear section of the bike to expose the belt cover. If this cover is like all of the other CVT covers, you simply loosen all of the bolts (they stay held in the cover), remove the cover, then use a pulley drive pin to open the clutch sheave and remove/replace the belt. We sell this tool (drive pin) for about $14 (for ATV's/UTV's) and it allows anyone to change it pretty easily. Snowmobile guys are very familiar with this process. About the only other thing we do to a CVT is occasionally clean it with a spray cleaner. This removes any belt residue from the normal belt wear.
As for other maintenance items.... the tires are reported to wear between 45-70% better than the current Spyder (have no idea why, but vehicle weight and tire compound probably has something to do with it). There is no power steering unit, or air ride suspension to contend with, nor is there a belt to align, and the wheels come off with the removal of a safety clip and a big nut. Should be very economical to own.