Hot tar/petroleum odors:
This is a normal smell for new dishwashers. Some models have sound-deadening material that smells like hot tar/petroleum. This material looks like a black rubber coating that is on the exterior of the dishwasher tub. This material also helps to retain heat inside the dishwasher and is found on most stainless steel tub dishwashers. This is normal and should dissipate in 4-6 weeks.