If you are considering buying a second hand car from a private dealer, but have minimal knowledge regarding the mechanics of cars, you may want to think about hiring a professional to inspect the vehicle before you make the purchase.
You can easily find second hand cars for sale from private sellers on many buying and selling platforms, such as EBay, Gumtree, Auto Trader and many more. Many private sellers are looking for a quick sale, and can sometimes not be 100% truthful regarding any issues with their vehicle.
Many mechanics offer a call out inspection service for a reasonable price, they can check over the car and offer their opinion regarding the state and reliability of the car. Whilst the service costs, it may save you money in the long term, as they will offer advice regarding the value of the car they are inspecting and if it is worth buying.