Would a double din stereo fit in 1994 Volvo 940?

No, a double DIN stereo will not fit in a 1994 Volvo 940. This car model features a single DIN stereo slot measuring 180mm x 50mm or 7.1 x 1.97 inches. You'll need to purchase a single DIN stereo or install a dash kit to accommodate a double DIN stereo. Check the size specifications of potential stereos against the 1994 Volvo 940's requirements before making a purchase.