I have always used the MOT station opposite Lidl (Mesoggi Rd/Polis Rd) too, even before Lidl was there ;o), good service, free coffee if they are not too busy, highly recommended them..
Never had any problems, but I have often heard members saying I went here I went there and got a different story, it is like the Pope asking where you got that f*****g hair cut from, no difference with mechanics. Life has taught me this at least.
Jim