Interesting topic.
I have a 2012 build Greentech 3 door, bought at 55,604 miles. Registered 5th September 2012. I checked the maintenance records and it appears that it never had its spark plugs changed at all. First entry in the record book was on 20th August 2016.
I just wonder whether service packs, both interim and full, were available at all?
My mate changed the plugs last Friday with car having done 59,112 miles. The 3 plugs were £21 total (after GSF discount) and cost of labour (he spent an hour and 15 minutes, as the coil packs were hard to pull out) was lunch at the local Beefeater. No way I would pay dealer prices as car is out of warranty. My mate commented the Citigo is cheap and easy to work on.
By the way, the Skoda is my daily runner as I have an Abarth for weekends and events.
Great forum, I am finding this a valuable resource.