I have put JSON examples of response data that are required in challenge number 1 here.

Get Car Type Built-Dates

{
  "dates": {
    "2014": "2014",
    "2015": "2015",
    "2016": "2016",
    "2017": "2017",
    "2018": "2018",
    "2019": "2019"
  }
}

Get Manufacturer

{
  "page": 0,
  "pageSize": 15,
  "totalPageCount": 6,
  "manufacturer": {
    "107": "Bentley",
    "125": "Borgward",
    "130": "BMW",
    "141": "Buick",
    "145": "Brilliance",
    "150": "Cadillac",
    "157": "Caterham",
    "160": "Chevrolet",
    "020": "Abarth",
    "040": "Alfa Romeo",
    "042": "Alpina",
    "043": "Alpine",
    "057": "Aston Martin",
    "060": "Audi",
    "095": "Barkas"
  }
}

Get Manufacturer Main Car Types

{
  "page": 0,
  "pageSize": 2147483647,
  "totalPageCount": 1,
  "types": {
    "1er": "1er",
    "2er": "2er",
    "3er": "3er",
    "4er": "4er",
    "5er": "5er",
    "6er": "6er",
    "7er": "7er",
    "8er": "8er",
    "i3": "i3",
    "i8": "i8",
    "X1": "X1",
    "X2": "X2",
    "X3": "X3",
    "X4": "X4",
    "X5": "X5",
    "X6": "X6",
    "X7": "X7",
    "Z1": "Z1",
    "Z3": "Z3",
    "Z4": "Z4",
    "Z8": "Z8"
  }
}