The last time mine went into a garage was for the clutch to be changed, as I needed her back in a hurry and we were having foul weather, so I couldn't do it outside.
Apart from suddenly needing a new slave, new arm, new bearing, and a new oil seal(??), she cost me over £500, and ran like a box of spanners, because they had 'decided' that, as part of their 'service', they would give the engine a tune-up.
Unfortunately, after slackening everything off, they discovered that my 1989 2.5 NAD didn't have anywhere to plug their computer in, so they left it and told me that I needed a new engine!
Also with it being on their premises, I couldn't take her away until I had paid up in full!!
For some indefinable reason, I've never been back!