Class Vehicle JS Fundamentals

class Vehicle {
    constructor(type, model, parts, fuel) {
      this.type = type;
      this.model = model;
      this.parts = parts;
      this.fuel = fuel;
      this.parts.quality = parts.engine * parts.power;
    }

    drive(fuelLoss) {
      this.fuel -= fuelLoss;
    }
}

OR

class Vehicle {
  constructor(type, model, parts, fuel) {
    this.type = type;
    this.model = model;
    this.parts = {
      engine: parts.engine,
      power: parts.power,
      quality: parts.engine * parts.power,
    };
    this.fuel = fuel;
  }

  drive(loss) {
    this.fuel -= loss;
  }
}