I've now released version 2.2 updates include the car database. Which allows each car to have its own fuel drain amount.
2.2 In progress
Every car will have its own fuelDrain amount and tank size, which can be changed in a car database. This also opens up other possibilitys such as different fuel types.
Version 2.1 of the mod has been released, changes inlcude
-Nearly every aspect is configurable via the ini file
-Master toggle switch has been programmed in
-Redone the fuel calculation and also takes account of engine damage
-Gauges can now be toggled on or off
-Changed default location of the gauges (can be set via ini)