I have a Philips DC777 in a Corvette with a CCrane am fm loading coil antenna and it gets decent reception in that car. I think a Sony might be a little bit less noise prone, but I have one of those ,Sony Explod XRCA640 (similar to Sony XRCA620, both replaced by less featured Sony XR-F5100) in a metal car with I believe an active antenna so I cannot really make a valid comparison. Sony works as well or better except for no direct entry.