Hyundai Santa Fe Problems

It is obviously frustrating you, and it would be nice to think that you wouldn’t have these problems with a new car, and that the dealer would give you better service. They don’t seem to be major problems, more annoying than anything else, and should be easily fixed. The good thing is that the car is still under warranty and the dealer appears to be attempting to fix the problems. If you are concerned about it ask the dealer for an appointment to go through the problems, what he is doing about them, and when he might be finished. You could also request that a representative of Hyundai be there at the same time.

Diff failures are not common, but not unknown either. I would try to get Hyundai to help out with the cost, their obligations to support their vehicles don't end when the warranty expires.

The power steering is an electrical system, so a problem with the battery could affect the power assistance. You should still be able to steer the car even without power assistance. It won’t affect the braking.

It's hard to give you a definite recommendation, as most cargo measurements are in litres rather than floor length, but I reckon most mid-size wagons and large SUVs would do the job for you. 

Most of these have a flat boot floor with the seats folded, and likely have ample body length for sleeping. 

So Mazda6, Skoda Superb or Ford Mondeo wagons are worth a look, plus large SUVs like the Mazda CX-9, Kia Sorento and Hyundai Santa Fe. 

Don't be afraid to try them out for size at the dealers either. You'd certainly test out a mattress before buying right?!

It is rated to tow a maximum of 2000 kg if the trailer has brakes, but only 750 kg if it doesn't.

Driven responsibly and serviced regularly, a Hyundai Santa Fe should be as reliable as any other car in its class. Of course, drive it like a stolen New York taxi or opt not to look after the Santa Fe and you're likely to be making friends with your local tow truck driver.

It is very low kays for the brakes to be wearing out, but Brembo brakes are performance-oriented brakes and you would expect them to wear out faster than regular brakes. I would consult a brake specialist for an opinion.

Seems it will be possible. We put your question to Hyundai and were told "a hardware upgrade is in the works and should be available in the next month or so".