I sold carts for about 9 years and learned a little.
-Club Car definitely the way to go. EZ Go not bad but Club Car is the "Cadillac" in my opinion.
-My preference would be gas though, not battery. Those little gas engines run w/ few if any problems and can go forever on 5 gallons of gas instead of having to worry about batteries going dead on the 27th or 36th hole in summer. If something does go wrong with the engine, its a really easy fix. Parts are cheap and readily available locally and easily reachable like car parts used to be years ago.
-You didn't mention where you are. A cart coming off a lease up North has WAY fewer hours on it than a cart in FL, TX, CA, etc will have. Find out where it has been used. Ask if the dealer had a maintenance contract w/ the club. If so, they regularly go out and do the maintenance on them during a lease. If not, it was maintained irregularly IF at all and probably by a minimum wage high school kid. A lot of clubs barely do anything to them because they know they will last through the lease w/ minimal if any care. The dealer though will take better care of them if they have the maintenance contract and know they will have to sell some if not all of them on lease termination.
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