Points is determined by a number of factors such as weather, wind, temperature, time of day the trip is made, etc. This can sometimes have unexpected consequences: e.g. the weather bonus is determined based on the weather at the time your trip started.
Also make sure that the means transport is registered correctly. By entering your journey, you can see which means of transport you have used, and also change this manually if it did not register correctly. In addition to the travel options that first appear, it is possible to slide them to the left to see more options, such as carpooling.