Dear truly speaking if u have some mechanic ur frnd that's another story otherwise finding reliable is difficult one.Instead i will suggest u that pakwheeler is cooperative forum and user helps each other without any greed.That's my experience on pak wheels for more than 10 years.
there r some mechanics who will charge u for inspecting cars but u will also need good denter painter in addition to mechanic for checking car condition for accidents.
Above them all,u also need some educated guy who can check documents/ cplc clearance/ tax token deficiencies etc. which ordinary uneducated mechanic or denter painter cannot check so all together its a combo which is better provided by some experienced pak wheeler who can serve u with sincerity