Europe is a union nowadays composed of 27 countries. Each of those countries have a specific way of contracting performing the contract, or ending it. There are not only minor differences, but general systemic and historical differences such as civil/common law or more Roman/traditional influences.
Of course the solutions found by jurist are very often similar, in damages, equity or all sorts of remedies. Indeed not only are those countries legal systems subordinated to the European court of Justice in Luxembourg, guarantor for equality amongst citizens but all countries in the union are part of the European Convention on Human Rights who is leading the protection for equality of people.
But even though solutions are often similar the process of reaching to them is very different. It is then perfectly clear that a European Contract is needed for several reasons.
First, in a no border zone the gain of time would be considerable if the same contract was used benefiting the development of European economy in its whole.
Second, the cost would be cheaper for all Europe, if specialised jurists were able to deal with a main general Contract law instead of having in each of the 27 countries specialists dealing with 26 neighbours.
Third, it is already in European principles that the Union should do everything possible to fight “restriction of trade”. If we consider all trade made in the Union going through a contract, the fact of having some impossible or slowest transaction due to a lack of simple contract is a restriction in itself.
And then eventually because we can, so why not start here. Indeed a worldwide contract would benefit the whole world but problem to establish it is the real issue. In the European Union institutions already exist and can impose things to national authorities, moreover a European academic network with universities exchanges is becoming more and more solid. The potential to get a Euro-contract is already settled and is probably the next step to a European integration, fusion and further construction.