On my 2 trips to the west coast I went with Budget for no other reason than they were cheap and a decent size company.
As far as the size of the car goes, I figured that it was an expensive trip, I’d be in the car a lot and to pay for something larger or nicer wasn’t much more than a bog standard hatchback. I ordered a Ford Edge both times, think it was £500 for 2 weeks with extras. It was huge and comfy and relaxing to drive for hours, and took is off road (4×4) more than I expected too! Especially useful around Monument Valley area (we did 2 off road drives) and Escalante Hole in the Rock road which I would not have taken a normal car down.
The first time we went we got upgraded for free to a Lincoln MKT – oh my word it was huge. It made an Audi Q7 look small but it was amazing to be in. Did 20mpg with its 3.7l V6 but that was equivalent to 40mpg in the UK with their fuel prices.
We also were able to easily chuck hire bikes in the back of the Ford (could have done it even easier in the Lincoln) without taking wheels off in Moab which was handy.
If you want to look like every other tourist get a mustang convertible. ;)
I very nearly ordered a Dodge Challenger RT – 450bhp V8 muscle car which would have cost £500 for 10 days but I chickened out.
Stick with the US cars and you’ll get a cheap deal. Hiring Euro cars like a Merc is very expensive and the decent US cars are likely. The Ford and Lincoln we had were both easily as well built and nice to drive as a Euro car.
You’re flying 15hrs and spending thousands on a holiday. Why save a few quid on something you’ll spend a lot of that trip in? For me having a big American car was part of the experience!