Cheapest fuel on your route, worked out for you. Statutory price feeds, AI route planning, and a public API for fleets that want it in their own stack.

The cheapest fill-up is only half the saving.
Fuel Checker plans the cheapest route for UK drivers. It reads live fuel prices along the way and uses them to work out where to fill up, not just the shortest path.
For consumers it's the app that saves a few pounds a tank. For businesses running fleets it's the same engine as an API they can wire into their own systems.

Tell me what you are building and I will tell you honestly how I would approach it.