would you guys say it's necessary to own a torque wrench and where would you most use one? i've never used one
If your doing your own servicing and light mechanics then yes I'd say you need a tourque wrench.
When I first got my 1.8T I got my mechanic friend to do the cam belt and tensioner (as you do) no problem there. Anyone who's done this will know you need to remove the top engine mount to do this job. 3 months later my engine mount bolt to block failed and dragged the belt into the mount nearly ripping it into shreds!!
On inspection the thread was loose in the block

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New engine mount, bolt set, cam belt and tensioner later ££?? It was tourqed to the correct rating but he'd forgot to do the extra 90 degree pull on each bolt (first time round) I check it every so often now and its minty moo but without a tourque wrench, a setting and the correct angle pull it only takes a bolt to work a little loose and bang.......