Cost of living in Cologne (Germany) is about the same as in Aberdeen (United Kingdom)
This comparison has some inconsistent or sparse data. It already provides a reliable comparison but it is not bullet-proof. It is based on 599 prices entered by 60 different people.
For example, to keep the same standard of living that would require £4,000 in Aberdeen you would need to make just about £3,859 (€4,340) in Cologne.