most decent garages will not charge if they cannot fix it.
i have never charged a customer if i could not fix there car.there have not been meny lol.
most garages will charge for time..
picture the scene - "intermittant engine management fault on car... take it to garage to investigate... garage takes 4 hours to diagnose it... customer then doesnt want it fixed as the replacement part is to much and will live with the fault.." - You reckon the garage will say "oh dont worry about it then"?
Agreed.I suppose its one of those things where you need to agree on something before they touch the car. "We'll look at it and see what we can do" is a bit vague (not a quote by the way just an example. It's best to go in there and clarify what exactly they will/might do and what the charges will be, if any depending on what, if anything they do.