TCDD offers economy/business classes only in high speed trains.
Business class offers 2+1 leather seats with multi-media screen on each seat.
One of the six cars of CAF high speed train is sold as business class.
Some seats of the business class wagons may be sold as “business class + refreshment” depending on the route and time. That means passengers would pay TL 20 (€ 6) more compared with “business class” and get a free meal during travel (as of March 2017). Business and business+refreshment seats are separate. You need to find seat from the option you want.