A metal grille should be the last reason to buy your first car, lol. Like said above, look for rust, any oil, fluid leaks. Make sure you test drive it. Check for clutch slippage. Take a look underneath to see for any hidden rust. And make sure he has the title and its clean. Also if the mileage is very low, it may be false. Look for a clean engine compartment and worn pedal pads...they can be a good reference to see if its the actual mileage reading. Do a carfax check too if possible.