A heavily pregnant New Zealand minister cycled to hospital to give birth on Sunday, saying there wasn't enough room in the car for her.

Julie Genter of New Zealand's Green Party was 42 weeks pregnant when she hopped on an electric bicycle to be induced at Auckland City Hospital.

She posted relaxed pictures of herself and her partner, Peter Nunns, posing proudly next to their bikes, and one of her pedalling, on Instagram.

Ms Genter, the Minister for Women, wrote on the social media platform: "Beautiful Sunday morning for a bike ride, to the hospital, for an induction to finally have this baby. This is it, wish us luck!"

She added: "My partner and I cycled because there wasn’t enough room in the car for the support crew... but it also put me in the best possible mood!"