Ours had bluetooth and I believe a USB port but didn't try it, we just used bluetooth to play music, worked fine. It's a touchscreen sat nav, once you get used to it it worked quite well.
Heated front seats were a life saver after standing out in the cold!
I liked the car actually, as a basic 4x4 I thought it worked well. We did go on some gravel roads and sections where it was rocky and steep and it handled it well. When I got back I actually looked at how much they were to buy here, maybe in a year or two when the used prices come down I would be interested in one.
The ring road is certainly doable in 7 days but if like us you are actually wanting a chance to get some decent photo opportunities then you know that you need to be around for the right light/conditions and would need to stay in an area for a day or two. We were on the road for 11 days total, clockwise round the island. A 12v cigarette socket USB charger is very useful, I got one which had 2x12v sockets and 4x USB, kept everything charged whilst travelling.
I liked the south, Jokulsarlon was what I imagined, the beach had as many photographers as washed up icebergs so keep that in mind, you are all trying to get a decent shot there. Obviously there are the waterfalls too, most very easy to get to.
The downside of anything within a day trip from Reykjavik is the amount of tourists, Gulfoss was by far the busiest we saw due to it's proximity to the city. Further around the island we had most to ourselves, a few people at Godafoss and Detifoss etc.
Heres my map I created with photography locations, shops, hostels etc, you may find it useful.
https://www.google.co.uk/maps/@64.9...=!3m1!4b1!4m2!6m1!1szzkhqQqlWB70.k5X53cQ5NKAs
I'd again recommend getting a local SIM card, they sell Simminn at the airport arrivals shop, just ask at the checkout. I paid £20 for the SIM card and the 2gb data I topped up on to it. I can't stress enough how useful it was knowing the weather/aurora forecasts and being able to plan around it. A lot of places are on booking.com so we just booked the day before where ever we wanted to be.
I got 3G signal nearly everywhere around the island, even in remote spots a long way from any towns, it really was surprising. UK networks in places like Wales or Scotland have nothing compared to in Iceland.
I'm still slowly going through my photos, I've edited most, may put a thread up on here at some point.
