The user didn't provide a description

"Car Idles rough, small puff of white smoke on start or time to time. No water and oil mix. Think water might be slightly contaminating one of the cylinders. Using a little coolant. Needs to asses. Drives fine otherwise."

"For some reason, my key wouldn't go in fully, when I tried to start my car - not sure what the problem could be. Called a message who looked at it, tried everything and said its because the ignition has a problem."

The user didn't provide a description

"Good day, I have a BMW e90 325i, I took it to a machinic due to a gear box problem, I bought a gear box then now when I took the car its overheating so I don't know what it is but there is a guy who came to diagnose it and he said its water pump. Regards Thabiso."

"Head gasket only"

"80k Normal service"

"MAJ1XXMRJ1DG44962"

"Replacing the M273 idler gear sprocket, hasn't gone wrong yet - no codes. https://www.mercedesmedic.com/check-my-mercedes-benz-for-balance-shaft-issue-by-vin-m272273/"

"Leaking water pump"