@andurec. I owned a Focus 2.0 TDCI and a Ceed 1.6 diesel, both were manual transmissions and both had the resistance at the bottom of the accelerator travel. With both these cars there was info in the user manuals. In the Ford it it gave a turbo overboost for a short period, in the KIA it was an economy stop which released full power. I have driven many automatic cars which have had a transmission kickdown switch. The reason I think it is an economy device in the Jazz is my manual had it as does my CVT. The CVT does not need a kickdown switch, it works its magic long before you get to the resistance in the pedal. I had not considered the speed limiter angle but I will try it today if conditions are suitable, flooring a 1.5 rapidly puts you into licence threatening speeds! When I owned my previous manual cars with this device there was much forum discussion about it purpose.