Buying a used Vw MK5 GTI what can you check. Buyers guide to not get a lemon

I bought my son a golf 5 GTI for 50000 and this is how much I have spent so far getting this car back to condition that I feel comfortable with my son driving it around. Here are some tips as to what to look for when buying a golf 5 GTI Follow me for more tips and tricks on repairing your golf 5 gti Check out my Facebook and tiktok #markredLine