What should I look for in a used MG MGTF sports?
The condition of the TF's hood is very important as even the slightest crease or tear will let water into the cabin. Make sure the hood folds up and down smoothly and latches into place easily. If it doesn't, the frame may have been bent by someone leaning on it and this can be pricey to fix.
The engines are generally rugged, but the 1.8 can suffer from a blown head gasket; slimy white gunk around the oil filler cap is a dead giveaway. Also check the gearlever moves cleanly as its joints can wear, making for a sloppy and inaccurate shift.
Electrical glitches are another bugbear of the TF, such as sticking electric windows and radios that don't want to play.