Which method save money?

I'd been trying out new route to work for the last few days and I'm wondering whether which is the more economical way of travelling.

I travelled from Klang every morning to office in KL city centre. I used to go by Federal Highway, which is cutting through Klang town, onto Federal Highway straight heading toward city centre. I'd noticed that if I used this way the petrol consumption is very high as I will be stuck in traffic jam in Klang town, Subang area and then a little in PJ. Toll I will pay RM2.10 each way of travelling. Travelling time is around 1 hr 20 min.

Few days ago I tried out using KESAS highway as my house is quite near to KESAS. Instead of paying RM2.10 for toll and stuck in jam, I enjoy a smooth ride all the way from my house to office without much traffic. It took only 40 min to reach office from home travelling average of around 90km/h. Although the toll I pay is RM8.10 or RM6.60, but I felt the petrol burnt during the traffic jam is equivalent, if not more than the extra toll fee I paid. Distance wise travelling on KESAS is around 9km more.

By looking at this, which method of travelling is a better idea? Appreciate you comment please.