[toni-a]

Dunno about service in Europe, but here it should be a no issue, all lenses will need some maintenance over time, like camera shutter aperture and flex cables have a lifespan so I would be more worried about those, besides any lens with frequent use, will need re-centering, cleaning is usually done for free with those services so I wouldn't worry too much, anyway depending on complexity of design elements cleaning at professional service isn't that expensive. I paid 30$ for for 17-55f2.8 IS, 20$ for 100mmf2.8 macro.