Yes. Motability insurance allows you to travel to any country within the European Union, as well as Iceland, Liechtenstein, Norway, and Switzerland without any additional cost for any 90 days within a 12-month period.
Before travelling abroad, you are required to get a VE103 form, otherwise known as a Vehicle on Hire Form. This details that you are allowed, and covered, to drive your vehicle abroad. It is recommended, however, that you get breakdown cover, as, otherwise, you will be responsible for any breakdown charges.