[Muncle]

Nice to have, but not mandatory:

Speedometer/odometer. People ask what kind of mileage I get. I have to answer in weeks or months. I don't know how many miles I drive between fills. And w/o a speedometer, you really don't know how fast you're going so if the fuzz is going to start busting us, it'd be nice to know. A lot of folks have gotten an old Schwinn-type bicycle speedometer and mounted it on the dash. Works well.

Fuel gauge. The float type works well.

Handie referenced those darn 4-seaters. Many/most of them remove the basket that sits behind the seat on a normal cart. You need that basket and room for a small cooler. And the darn things do stick out too far.

If you're getting a gas cart, add an extended tail pipe going out the rear. It quiets it a bit and pushes the fumes out the back instead of straight up to you.

A strip of something below the windshied to block rain from coming through. Many of us use those swimming tubes but they do offer overly priced plastic strips.