I AM buying a new Mazda 3 and asked about road noise. The dealer says Mazda is testing different tyres, but the noise occurs only on the hatch because of the cavity under the rear load area. I've ordered a sedan.
ROAD noise is more likely to be a problem in the hatch. If you're concerned, drive the car for an extended time on different road surfaces and judge for yourself.
Disclaimer: You acknowledge and agree that all answers are provided as a general guide only and should
not be relied upon as bespoke advice. Carsguide is not liable for the accuracy of any information
provided in the answers.