Whether or not you should go to a used car auction depends on your specific needs and circumstances. Auctions can be a great way to find a good deal on a used car, but they can also be risky if you don't know what you're doing. Before deciding to attend an auction, it's important to do your research, set a budget, and be prepared to stick to it. Additionally, it's a good idea to inspect the cars before the auction and to have a mechanic inspect them if possible.

When looking for a used car at an auction, there are several things you should keep in mind:

1. Vehicle History: Look for a car that has a clean title and a good service history. This will give you an idea of any accidents or major repairs that the car has been through.
2. Mechanical Condition: Check the car's overall condition, including the tires, brakes, and fluid levels. Also, look for signs of wear and tear, such as dents, scratches, and rust. If possible, have a mechanic inspect the car before the auction.
3. Mileage: Consider the car's mileage and how it has been driven. High mileage cars may have more wear and tear than low mileage cars.
4. Model and Year: Research the car's make and model to understand any known issues or recalls.
5. Price: Keep in mind the market value of the cars and set a budget for yourself before going to the auction.
6. Auctions Terms: Understand the rules and the type of auction you are attending, some auction have a "buyer premium" that you need to pay on top of the final price.

It's also important to remember that at an auction, you are buying the car as is, so it's important to thoroughly inspect the vehicle before placing a bid.