I have a 2023 2.0 TSI Sportline, so I don't expect amazing mpg, but I have to say I'm pretty impressed after 1 year of ownership. To date in 6000 miles it is 35 mpg - pretty much what Skoda show on the spec sheet for my car. Around 75% of my usage is short distance 4-5 miles locally the rest is longer journeys on 70 mph major roads when the average is around 45 mpg. Yesterday I decided to try ECO mode on a 120 mile round trip. Going was 50/50 mix of single carriageway A roads, town centre traffic and Motorway; recorded 45 mpg, return journey 80% motorway 49.5 mpg, typically driving at 60 to 70 mph. I did not use cruise control but did use the speed limiter and coast mode kicked in most times whenever I lifted off the accelerator. My previous 2.0 TDI DSG Touran used to average around 60 mpg on that journey, using V-Power diesel, the Karoq runs on Shell E10 Unleaded - negligible cost difference for fuel. I can't find documented anywhere what ECO mode actually does, but my impression was that it seems to start off in 2nd more, that it stays in 6th and 7th longer and is happy to run at at 1100/1200 rpm in both those gears when normally it would have changed down at around 1500 rpm. I also noticed that the Soundaktor is quieter too.