Went for 6 days to the black sea from Bulgaria's capital - Sofia.
Started the day at 8.30 AM on Saturday to go to the bodyshop to install my windrestrictor that arrived a few days previous. Work started at 9.30 and ended around 1. Apparently they had to run the wires all the way to the back left of the trunk to keep it looking clean. On/Off button was installed inside the middle back armrest to keep it hidden, very well done.
Hit the road around 1.30 PM on the ring road surrounding Sofia and cruising at 100 KPH, get on the main highway and its 140 KPH. 30 mins in and on quarter tank was getting 7(!) liter / 100KM.
Stopped for lunch and filled up the tank, and it slowly started creeping up to around 8.5L/100KM. Some sensor was hanging from the driver side of the bumper so I just stuffed it back under the bumper (I think it was the temp sensor).
The first 100KM of the highway is older, not so nice and makes the car vibrate. Once you hit the smooth highway for 200+KM its smooth sailing. Some trucks, but overall not too many cars. The road going north from Burgas gives some nice sea views but since its mostly two lanes there was some traffic. Got to Sunny beach around 5.30PM with two stops.
Going from Sunny Beach down to Sozopol is also a nice drive along the coast. Sozopol streets are very crowded and full of people so driving is at a snails pace. The beaches near Sozopol give for nice picture opportunities. Didn't have time to take pics in the old city but there is limited opportunities there.
Driving back from Sozopol and my aircon seemed to not function very well, and it was really hot outside so was a bit hard on myself and GF. We left at 12.30, 3 stops and back in Sofia around 6pm.
For 5 days and ~800KM took about a tank full of gas.