Our 2025 Impact Report: 180 Tons of CO2 Saved

Four numbers describe the community's year: 180 tons of CO2, more than 15,000 trips, 2.5 million SAR kept by riders, and 24 cities.

Filed under
Impact
Published
18 September 2026
Read time
3 min read
Author
The Diz team

A carpool network does not do anything on its own. Every number below was produced by a driver who posted a trip they were making anyway, and by riders who took a seat in it instead of a second car. This is their year, not ours.

CO2 saved
180 t
Trips shared
15K+
Saved by riders
2.5M SAR
Cities on the network
24+

Where 180 tons comes from

The arithmetic is simpler than it sounds. Four people who each drive their own car from Riyadh to Jeddah burn fuel for four cars across 950 km. The same four people in one car burn fuel for one. The three cars that stayed parked are the saving.

A full car is not four times more efficient than an empty one. It carries a little more weight and uses a little more fuel. But the extra fuel for three passengers is nothing next to the fuel of three separate engines covering the same road on the same day.

Repeat that across more than 15,000 trips, most of them on long intercity roads, and the tons add up. 180 of them, over one year.

Distance is what makes it add up. A shared ride across a city saves a few kilometres of driving. A shared trip from Riyadh to Jeddah saves 950 of them, three times over, in a single afternoon. Almost every road on our network is a long one, which is why the tonnage is larger than the trip count on its own would suggest.

Fewer cars on the same road

There is a second saving that none of the four numbers describes. Every seat taken is a car that did not join the traffic on a highway already carrying it, and a parking space that stayed free at both ends of the trip.

We are not putting a figure on that, because we have not measured it. We mention it because it is real, and because a driver who fills four seats has done more than the CO2 line gives them credit for.

2.5 million riyals that stayed with riders

The second number is the same idea seen from the passenger seat. A seat at a fixed price on a road somebody is already driving costs less than the whole car, and less than the round trip in your own. Across the year that difference came to 2.5 million SAR.

For a student going home every second weekend, that difference is the reason the trip happens at all. For a family sending someone to Makkah, it is the difference between one visit and two.

24 cities, and what a city means here

A city joins the network when trips actually start or end there, not when we draw it on a map. Some carry traffic every week. Others are one end of a road that runs a few times a month. Both count, because the second kind is how the first kind begins.

The busiest roads this year were the ones you would expect: Riyadh to Jeddah at about 950 km, Riyadh to Dammam at about 400 km, and the short Jeddah to Makkah run of about 80 km that carries a different kind of trip entirely.

What 2026 is about

Two things, and they depend on each other.

  • More cities, so that a rider outside the main corridors can find a seat on the day they need it rather than the day after.
  • More drivers on the roads we already serve, because a route with one trip a week is a timetable and a route with ten is a network.
  • Both of those come from the same place: drivers posting the trip they are already making, verified through WASL, at a price a rider can see before booking.

We are not setting a target for next year's tonnage. The tons are a by-product of full cars, and full cars come from trips that were going to happen anyway. Fill the cars and the rest follows.

Thank you to every driver who opened a seat this year, and to every rider who took one. The road is long, and it is better shared.