I've hired cars in Turkey a few times. All I've been asked for is my driviing licence & passport. Since I've had a photocard licence I have never been asked for the paper part. I've always found the driving very easy, once you get away from
Marmaris the roads are empty, well signed and I find the traffic drives at a slower pace. last several years petrol has been expensive, from memory more than here, but don't know if the stronger ££ has helped a bit.