I bought from new recently a 61 plate Hyundai i10 active (this is a 'facelift' model with kapp2 engine)

Great little car as you have so often pointed out but a particularly annoying 'feature' (affecting others too, I note from hyundai forums) is that when changing up gears, the engine revs rise momentarily by about 400-500rpm, before dropping off.

I have never experienced this in a car before and makes for erratic driving, especially when changing between 1st and 2nd. It does this throughout the gear range and rev range, presumably wasting fuel.

The workaround I employ is to lift my foot fully off the accelerator and pause for a second before then depressing the clutch to change up.

Its like there is an overrun on the engine management.