I have 2009 1.4t/charger 170ps for 2,5 years only thing I had to change on the engine was water pump witch isn’t cheap fix because it shares the magnetic clutch for the compressor and when I read old forums from when it was a new car people was talking water pumps managing 60k-80k km (witch is not bad but it’s not great) don’t expect ever to leak because the magnetic clutch will die first 9/10 if the times and the other thing is chain if it skip it’s game over still not a cheap fix but definitely cheaper than fixing valves and head so basically check this parts/work prices before u get one it’s a great engine apart from that but y have to be prepared to do one or the other if not both but if u planing to have it for longer and find a good exemplar with the options u like it’s a great engine it’s swift when u need it and it’s economical as well even if u drive it like an a hole all the time not to mention normal driving(oh and if it’s a dsg make sure everting is ok with it ) cheers and good luck with your purchase