Helping Kiwis find
great value fuel
and share it with family and friends.

Z Energy / Sharetank

It’s one of the questions fuel purchasers ask the most: how do I know I’m getting a good deal when fuel pricing can be so variable? After initial customer research highlighted this as a problem, Z Energy saw an opportunity to help Kiwis prepay for fuel, at the best price in their area, without needing to even leave the house.

Sharetank Fuel your way Z Energy RUSH

Working with the Z design and innovation team, we followed a human centered design process to prototype and validate the hypothesis to make sure people felt confident they were paying the best price for fuel. Crucially, we were able to ensure a product customer fit by introducing and adapting new features based on the user data we were getting back.

Sharetank User Journey Z Energy RUSH

We integrated Sharetank into the wider Z app technical architecture and UX, expanding the UI design system, with haptics, sound and animations to guide the user through the complex process of choosing, purchasing and sharing the best fuel prices.


Sharetank is a virtual fuel tank you can fill anytime, anywhere and share with up to 5 friends or family members. Launched as a world-first in New Zealand in late 2019.

There are two kinds of users - the Sharetank owner, who pays for the fuel in the tank, and members who use the fuel paid for and shared by the owner. This might be a family, or a workplace team.

When an owner buys fuel from Z to top up their Sharetank, they get the best price within a 30km radius. They then get to share that value by allocating virtual litres to members of their Sharetank. Even if a member lives in a different area, they can fill up at their nearest Z station using these virtual litres - even if the local price is higher.

Sharetank Screen design Z Energy

With millions of litres of fuel top-ups following its launch, Sharetank has enabled tens of thousands of Kiwis to save on fuel, share their savings and better manage fuel spending with their friends and family, regardless of where in New Zealand they live.

Sharetank has had another unplanned, positive impact. During the COVID-19 crisis, it has enabled more kindness. Z provided the Student Volunteer Army with free litres through Sharetank so they could do grocery deliveries for those in need.

We’ve seen
millions of litres
of fuel top-ups following its launch. Helping tens of thousands of Kiwi’s save, share and manage their fuel spend.

Services delivered
  • User Insight
  • UX Research & Design
  • UI Design
  • Visual Design
  • Animation & Illustration
  • Prototyping
  • Front End Development
  • Back End Development
  • Cloud Integration
  • Quality Assurance & Testing
  • Application Support

Awards & recognition
Best Awards - User Experience / Innovating - Gold
Best Awards - User Experience / Innovating - Gold
CX Awards Australasia - Best Use of Technology to Revolutionise CX
CX Awards Australasia - Best Use of Technology to Revolutionise CX