I have a 2006 Holden Astra automatic and, while it was parked in my driveway, the person I live with decided to tow it from behind (with it in Park, the hand-brake on and the steering locked). I don’t know what to check as I’m worried he may have cause damage to it from forcefully towing it. It has been making a clicking noise from the front while driving and a few other things since he did it. I have no clue what damage this could cause.
For a start, it’s never a good idea to drag a car anywhere with the wheels, hand-brake and steering locked. You can damage anything from the transmission, steering column, driveline and even ruin (flat-spot) the tyres.
If the clicking noise when you drive it wasn’t there before, then a mechanic would suspect that there’s been damage done to the front driveshafts. This would be consistent with the car being forcibly dragged along the ground. If you’re worried, have a mechanic check the car over and send the repair bill to your (now possibly ex-) housemate.