Does the Diono Radian 3RXT 2020 fit a Mazda 3?

Hi Yormi, thank you for your inquiry. It can fit but there but there will be limited room available in the front when it’s installed rear-facing. Best to contact your local store https://www.babyonthemove.co.nz/store-locations/ to try this seat and any other seats that may suit. Sorry that promo code has expired. We hope this helps.