Best way to organize data

Do you mean structure in Swift, or in CoreData ?

For Swift, I would do this:

You may need some enum with associated values, such as:

enum ChargeMode: String {
     case ac: "ac"
     case dc: "dc"
     case dcFast: "dcFast"
}

enum Fuel : String {
     case petrol: "petrol"
     case gas: "gas"
     case h2: "hydrogen"
     case lpg: "lpg"
     // and so on
}

enum Energy {
     case gazoline(fiuel: Fuel, tank: Int, mpg: Float)
     case electric(battery: Int, mpk: Float, chargeMode:ChargeMode, chargeSpeed: Int )
}

Create a class Vehicle, with common properties:

class Vehicle {
     var make: String
     var model: String
     var wheels: Int
     var energy: Energy
     var weight: Int
     var speed: Int
     // and so on
}

then you could subclass

class PassengerCar: Vehicle {
     var numlberOfpassengers: Int
     var trunkVolume: Int
}

Is it what you were looking for ?

In CoreData, you would organize with Entities, attributes and relations