https://api.edmunds.com/api/vehicle/v2/styles/200477947/transmissions?fmt=json&api_key={api key}

{
  "transmissions": [
    {
      "id": "200478100",
      "name": "5A",
      "equipmentType": "TRANSMISSION",
      "availability": "OPTIONAL",
      "options": [
        {
          "id": "200478145",
          "name": "5.7L V8 HEMI MDS VVT Engine (S Rwd)",
          "description": "5.7L V8 16V VVT engine rated at 363 hp @ 5200 rpm and 394 lb.-ft. of torque @ 4200 rpm; 5-speed automatic transmission; 160 mph primary speedometer; 215mm rear axle; 4 wheel independent performance suspension; Anti-lock 4-wheel performance disc brakes; Gross vehicle weight of 5350 lbs.",
          "equipmentType": "OPTION",
          "availability": "S Rwd",
          "attributes": [
            {
              "name": "Front Suspension Classification",
              "value": "independent"
            },
            {
              "name": "Independent Suspension",
              "value": "four-wheel"
            },
            {
              "name": "Rear Suspension Classification",
              "value": "independent"
            },
            {
              "name": "Antilock Braking System",
              "value": "4-wheel ABS"
            },
            {
              "name": "Gross Vehicle Weight",
              "value": "5350"
            }
          ],
          "manufactureOptionName": "5.7L V8 HEMI MDS VVT Engine",
          "manufactureOptionCode": "EZH",
          "category": "Package",
          "price": {
            "baseMSRP": 2200.0,
            "baseInvoice": 1958.0,
            "estimateTmv": false
          }
        }
      ],
      "automaticType": "Shiftable automatic",
      "transmissionType": "AUTOMATIC",
      "numberOfSpeeds": "5"
    },
    {
      "id": "200478101",
      "name": "8A",
      "equipmentType": "TRANSMISSION",
      "availability": "STANDARD",
      "automaticType": "Shiftable automatic",
      "transmissionType": "AUTOMATIC",
      "numberOfSpeeds": "8"
    }
  ],
  "transmissionsCount": 2
}