The later car is a more modern design, so you would think that things would have moved on a bit. That said, I still don't consider our Jazz a noisy car. Even at 70-75mph, I certainly wouldn't call it a 'terrible racket'.
I notice you have Michelin CrossClimate tyres on, which will not help. Directional tyres are quite a lot noisier than symmetrical or asymmetric tyres, especially as they wear down.