Array
(
    [0] => Array
        (
            [filterveld] => merk
            [filterkey] => 37
        )

    [1] => Array
        (
            [filterveld] => model
            [filterkey] => 12
        )

    [2] => Array
        (
            [filterveld] => seizoen_groep
            [filterkey] => 33
        )

    [3] => Array
        (
            [filterveld] => nieuw
            [filterkey] => 1
        )

)