It makes sense to pass a filter object to the repository so it can limit what records return:

var myFilterObject = myFilterFactory.GetBlank();
myFilterObject.AddFilter( new Filter { "transmission", "eq", "Automatic"} );
var myCars = myRepository.GetCars(myfilterObject);

Key question: how would you implement paging and where? Any links on how to return a LazyList from a Repository as it would apply here? Would this be part of the filter object? Something like:

myFilterObject.AddFilter( new Filter { "StartAtRecord", "eq", "45"} );
myFilterObject.AddFilter( new Filter { "GetQuantity", "eq", "15"} );
var myCars = myRepository.GetCars(myfilterObject);

I assume the repository must implement filtering, otherwise you would get all records.