Image Credit: PixabayBuying a second-hand car can be a nightmare, even for the reasonably knowledgeable. A clever car salesman can hide a multitude of issues with a lick of paint and a quick bodge job. Once that handshake is done and the deeds exchanged, as long as it rolls off the lot, they can claim that the problem was never there when they had it.So, if you think about it, bringing a mechanic along with you while you're shopping for your brand-new-used motor shouldn't be too much of an issue. Why not bring along a professional who can spot a dirty spark plug from a blown head gasket? You wouldn't buy a house without it getting professionally inspected, would you?A car dealer going by the TikTok handle @autobahn_prestige_motors headed to his social media comment section to ask for some advice. As he was looking to close the deal on a vehicle, the potential buyer asked him if he could take the truck out for a test drive. This was nothing unusual, but then he asked if he could run it by a mechanic, too.AdvertisementAdvertisementOf course, as a self-respecting and upstanding used car salesman, he had nothing to hide, so he let him do as he pleased. The results were what he expected, and the truck was a ringer.Try Before You BuyIn the end, the buyer hesitated despite confirmation that the truck was in good order and being approved for the monthly financing. The salesman wondered if he should have been a little more pushy with his sale, considering he let him take it for a drive and to a mechanic. But, when it comes to the long-term commitment of buying a car on finance, especially a used one, a little extra precaution should be taken. It is a bad time being locked into monthly payments for a car that spends most of its time in a garage, or in some cases, a write-off. A Hard BargainFor this buyer, even after a trip to the mechanics, the truck wasn't a sure thing. The dealer was put out by the lengths that the interested party went to without actually closing. Even after having the truck checked over and a good deal on the payments, they walked away without a new set of wheels.AdvertisementAdvertisementMany of us who dabble in used cars, either for the budget or for the love of fixing up, have been hard done by. I know that next time I go to buy a used car I don't know too much about, I'll be bringing a mechanic along.If you want more stories like this, follow Guessing Headlights on Yahoo so you don't miss what's coming next.