The purpose of the "F&I" department is to put back in all the profit that they had to negotiate away to get you to sign the deal. When we bought ours, the F&I guy tried to sell us LoJack (on a SEL, that had it built in), Scotchguard (on a car with a Vinyl interior), and a road hazard policy for the tires that cost more than a set of 4 new tires. And of course extended warranties, emphasizing the cost of traction battery replacement until I pointed out the 150K warranty on same.
There is one scheduled maintenance item on an e-Golf - changing the inverter coolant after something like 50k/5 years. The rest of the periodic service items are simple inspections - tires, brakes, ball joints, etc. There is no plugging in special instruments, unless something is wrong. There should be no reason to actually use the dealer service department, the things in the service are the sort of thing that make up the "free x point inspection" that chain tire dealers offer.
One of the problems dealers will face with electric cars is that they don't need regular service, so the service department won't be as big a revenue source as normal. The "engine" has one moving part, not hundreds. There is no transmission. An ICE car gets some of its metal parts hot enough to glow, the hottest thing in your golf's drivetrain is a heat sink that might hit 120F. Those very hot parts of your ICE have to contain small explosions, resulting in pressures greater than 50 bar. The highest pressures in your e-golf are in the air condition, with the tires in second place. No replacing air filters, timing belts, lubricants, hoses, spark plugs, etc...
