Temperature at the surface of Venus is hot, 872 F (467 C)! However, many steels and ceramics are capable of dealing with temperatures this hot. For example, blades in modern turbines withstand temperatures of ~2500 F (~1400 C), thanks to many years of scientific and engineering and design. It's not just the temperature though, as there is also a lot of sulfuric acid in the atmosphere, which is very corrosive to many metals and ceramics! This makes things more difficult. In order to build your rover, you'll have to overcome both the temperature and acid issues.

The next problem is to do with any devices you might want to have on your rover, because even if you can get the materials to withstand the temperatures and chemicals, you'll need to think of a way to run any motors and instruments at 900 F. You'll likely be doing this without any ventilation, because you wouldn't want to be pumping corrosive gases through your rover.

Computers we use on Earth are not designed for these temperatures, and in fact, many of the treatments for preparing computer chips are around this temperature, so you'll need to come up with a clever new way to make suitable computers as well.