Quoting a repair over the phone
A caller describes a noise — a grinding, a knocking, something that started on Tuesday — and asks what it will cost to fix. There is no honest answer to that, and every garage knows it. The difficulty is that saying so badly loses the job to whoever was willing to guess.
Why a blind number hurts either way
Quote low and the real fault is worse, so you either absorb the difference or have the conversation nobody wants with a customer who feels misled. Quote high to protect yourself and they book with the garage down the road who guessed lower — and who will have the same conversation later, which is no comfort to you. Neither outcome comes from being unhelpful; both come from answering a question that did not have an answer yet.
What you can price with confidence
A service, an inspection, a brake fluid change. These have prices and should be given immediately and without hedging.
A firm number for finding out what is wrong is the most useful thing you can offer on this call.
"Front pads and discs are usually two-fifty to four hundred depending on the car" is genuinely helpful and commits you to nothing.
Sometimes the most reassuring thing is a ceiling — "it will not be a thousand pounds" settles somebody who feared it might be.
Sell the diagnosis, not the repair
The outcome you want from this call is the car booked in, not a price agreed. "I cannot price that without looking, but I can get it on the ramp Thursday morning and ring you with a firm figure before we touch anything" is a complete answer — it gives them a time, a process and a promise that nothing happens without their say-so. That last part is what converts, because the fear underneath the question is an open-ended bill.
Take enough detail to be useful
Make, model, year, engine, mileage, and what it is actually doing — when it happens, whether it changes with speed or braking, whether a warning light is on. Half of that determines how long the diagnostic takes and whether a part is worth having on the shelf. It also means whoever eventually looks at the car is not starting from a one-line note saying "noise".
Frequently asked
Not for an undiagnosed fault. Quote low and you absorb the difference or have an unpleasant conversation; quote high and they book elsewhere.
Fixed-menu work like a service or an inspection, the diagnostic itself, typical ranges clearly flagged as ranges, and sometimes a ceiling — "it will not be a thousand pounds" settles a worried caller.
The car booked in, not a price agreed. Offer a time, a firm diagnostic fee, and a promise that nothing happens without their approval.
Make, model, year, engine, mileage, and what the fault actually does — when it happens, whether it changes with speed or braking, and any warning lights.