With the ever increasing cost or running a vehicle, each and every mile you can get from a tank of fuel is valuable. When we remap a car, as well as performance upgrades, we can also change the engine management software to focus on making fuel saving the priority. Due to the improved performance throughout the RPM range, improving the low end torque and widening the power-band as far as we can will mean less throttle pedal input is required to maintain cruising speeds or when driving on a gradient. It will also mean that the vehicle will be more comfortable in higher gears at slower speeds as well as requiring fewer gear changes overall. A combination of all these factors with adjusting your driving style to make the most of the extra low end torque, you will see improvements in fuel consumption. This is most effective on turbo-diesel engines, where the savings could be as much as 20%.