What about travel expenses?

A:

The cost of MEPs’ travel between their constituencies and Parliament in Brussels or Strasbourg is paid by Parliament, or refunded at cost on production of tickets or receipts. There is no automatic allowance for this, so MEPs can only claim the actual costs incurred for journeys undertaken.

Obviously, the cost of travelling to Parliament depends on the distance between an MEP’s constituency and Parliament itself, and the price of each journey varies depending on time of day and how early the ticket is booked.