26th Nov 2014, 17:16

Friend, you are wrong. Changing all 4 mountings is the best solution. If you just change the broken mounting, you will get another broken mounting in short time. Try to think it as new rubber and old rubber. Is it the same condition? New is soft and old is a little hard. If some are soft and some hard; what will happen? Unbalanced vibration control. If all new, they will hold the engine balance. If you don't believe it, you can try it.

26th Nov 2014, 17:30

Additional advice. A mechanic is never wrong about this. Did you ever see a broken screw of a rear engine mounting bracket? I saw it myself and I repaired it also because I am mechanic too. The broken screw jams inside the gearbox till it can't be removed by any method. So I had to weld the bracket on the broken screw as solution. So friend, if you really dunno about cars, please don't say your mechanic is cheating. Before I worked as a mechanic, I also liked say a mechanic was cheating me out of money.