Questions to ask a garage before you book
Ask six things before you hand over the keys: is that a quote or an estimate, can I have it itemised in writing, will you ring me before doing anything not on it, what parts will you use, what is guaranteed and for how long, and how long will you have the car. Ask them at booking rather than at collection, because the leverage runs one way. A quote is a price the garage has agreed to and an estimate is only its best guess, and those two words carry different legal weight. If you did not authorise work, Citizens Advice is clear that you should insist on paying only for the work that was agreed, but a garage is entitled to keep your car while a bill is being disputed, which is why the conversation is cheap beforehand and expensive afterwards.
Booking a garage is a small leap of trust, and most drivers make it with one question: how much? A few more questions, asked before you hand over the keys, remove nearly all of the risk that comes after. They are not about being difficult. They are about the fact that the balance of power changes completely the moment your car is on a ramp.
Here is why the timing matters so much, the six questions worth asking, the exact wording that carries weight, and what your rights actually are if the bill arrives higher than you expected.
Why you ask before, not after
Everything is negotiable while your car is on your drive. Once it is stripped in someone else's workshop, far less is. Citizens Advice sets out the position plainly: a garage is not allowed to sell or dispose of your car while you are disputing a bill, but it can keep the car until the dispute is settled. That right is known as a lien, and it is the reason a five minute conversation at booking is worth more than a strong argument at collection.
If you need the car back urgently while you dispute the charge, the standard advice is to pay under protest: write the words paying under protest clearly on the garage's copy of the repair order and on any receipt, so that paying is not read as accepting the bill, then pursue the money afterwards. It works, but it means finding the full amount first. Agreeing the terms up front avoids ever needing it.
None of this assumes bad faith. The overwhelming majority of garages are straight, and a good one will answer all of the below without blinking. The questions exist because the cost of asking is nothing and the cost of not asking is occasionally several hundred pounds.
1. Is that a quote or an estimate?
This is the question almost nobody asks, and it is the one that decides the argument if there ever is one. The two words are not interchangeable, and they are not a matter of house style.
A quote is a price the trader has agreed to do the work for. It should say what work is included and what it costs. An estimate is the trader's best guess at the cost, and it is not binding in the same way. If you were given an estimate and the final bill is higher, the garage has not necessarily done anything wrong. If you were given a quote and the bill is higher for the same work, it has.
Worse than either is no price at all. Where nothing was agreed, the Consumer Rights Act 2015 gives you the right to pay only a reasonable price. That sounds protective, and it is, but reasonable is a word that gets decided after the disagreement has already started, usually by comparing what other garages charge. Getting a figure agreed in advance is far easier than arguing about what is reasonable later.
So ask directly: is that a quote or an estimate? A garage that says quote, and puts it in writing, has told you something specific. One that will only estimate is not being shifty, some jobs genuinely cannot be priced until they are opened up, but you now know which situation you are in.
2. Can I have it itemised, in writing?
A written itemised price splits the job into parts and labour so you can see what you are actually paying for, and it lets you compare garages properly instead of on one headline number. A labour rate of £60 an hour against £90 an hour tells you nothing until you know how many hours each has allowed for the job.
An email or a text is fine. It does not need to be a formal document, it needs to exist. A garage happy to put a clear price in writing is telling you it has nothing to hide, and the same document is what any later complaint would rest on. Our guide on what a car service costs and what an MOT should cost give you the benchmarks to sense check what you are quoted.
3. Will you ring me before doing anything that is not on the quote?
This is the single most valuable sentence you can say when booking. Sometimes a garage genuinely does find something worse once the car is up, and a good one wants to tell you. Make it explicit that you want to be contacted for approval before any work outside the agreed price goes ahead, and ask that it is noted on the job sheet.
Your position if it is ignored is stronger than most people realise. Citizens Advice puts it this way: if you asked for a specific piece of work and the garage did extra work you did not ask for, you can ask them to undo it, and if that is not possible you should insist on paying only for the work that was agreed. That is a good rule to have on your side. It is a much better one never to need, because of the lien above.
One phrase to avoid at booking is do whatever it needs. It sounds decisive and it hands over the decision. If you say it, you have authorised the garage to choose the work, and you will owe for whatever was genuinely necessary at a reasonable price.
4. What parts will you use?
Ask what will be fitted and to what specification. Good garages use parts that match your car, whether original equipment or quality equivalents, and they will explain the choice without being asked twice. It matters for how long the repair lasts, and on servicing it matters for your warranty: manufacturer schedules and correct specification parts keep it intact, which is covered in does servicing at an independent garage affect your warranty.
A pattern part is not automatically worse and a main dealer part is not automatically better value. What you are listening for is whether the garage can tell you which it is using and why. Our comparison of a main dealer against an independent garage covers where each tends to win.
5. What is guaranteed, and for how long?
Ask what warranty applies, and specifically whether it covers both the part and the labour to fit it. A part only guarantee is worth much less than it sounds, because on most jobs the labour is the larger half of the bill. Many good garages guarantee both for a set period or mileage, typically twelve months, and will say so without hesitating.
Separately from any guarantee, the Consumer Rights Act 2015 requires the work to be carried out with reasonable skill and care. Where it is not, you have the right to have it put right or to a price reduction. A garage guarantee sits on top of that, it does not replace it, and no garage can sign away your statutory rights.
Keep the paperwork. Invoices are the strongest form of service record and the only evidence of what was actually done, which our guide on what a full service history means explains in more detail.
6. How long will you have the car?
A straight answer lets you plan, and it also tells you how organised the garage is. Ask when it will be ready rather than when the work will start, and ask what happens if a part has to come in. A car sitting waiting three days for a component nobody chased is one of the most common complaints there is.
If you need it back the same day, say so at booking rather than hoping. Some jobs simply cannot be done in a day, and it is better to hear that before you are without a car. Where you need an MOT and work in the same visit, booking an MOT and service together usually costs less and takes less of your week than two separate trips.
Two extra questions worth asking
Are you a DVSA approved MOT centre? If you need an MOT, look for the blue sign with three white triangles. It means the centre and its testers meet official standards and are monitored, which is reassuring even for ordinary servicing.
What do you charge to diagnose it? If you are booking because of a symptom rather than a known job, ask what the diagnostic costs and whether it is deducted from the repair if you go ahead. Many garages do deduct it, and almost none volunteer that. Our guide on what a diagnostic check involves explains what you are buying, and if your symptom is smoke from the exhaust, what the colour of exhaust smoke means will help you describe it accurately.
Listen to how they answer
The answers matter, and so does the manner. A professional garage welcomes sensible questions and replies clearly and patiently, because it has these conversations every day. Irritation, vagueness, or pressure to commit on the spot are all reasons to try somewhere else. You are not being awkward, and any garage worth using knows that.
Two answers should end the conversation: a flat refusal to put any price in writing, and a refusal to agree to ring you before extra work. Both are cheap for an honest garage to give.
For the wider picture, our guide on how to choose a good local garage covers reviews and credentials, and the signs a garage is overcharging you is worth a read before any large repair. If something has already gone wrong, how to complain about a garage repair sets out the steps in order.
The bottom line
Six questions, two minutes, and the whole job changes shape. Establish whether it is a quote or an estimate, get it itemised in writing, agree that nothing extra happens without a phone call, check the parts and the guarantee, and find out when you get the car back. Ask them while the car is still yours to drive away, because that is when the answers are cheapest to get.
You can compare local garages near you, see their ratings and opening hours, and send a booking request in about a minute. You pay the garage directly and there is no booking fee.
Key takeaways
- Ask before you hand over the keys. A garage is entitled to keep your car while a bill is being disputed, so the leverage is all beforehand.
- A quote is an agreed price. An estimate is only a best guess. The two words carry different weight, so ask which you are being given.
- If no price was agreed at all, the Consumer Rights Act 2015 says you owe a reasonable price, and reasonable gets argued about after the event.
- Get it itemised in writing. An email or a text counts. A labour rate means nothing until you know the hours allowed.
- Say you want a phone call before any work outside the quote, and ask for it to be noted on the job sheet. Never say do whatever it needs.
- Ask whether the guarantee covers the labour as well as the part, because labour is usually the larger half of the bill.
- If work you never authorised appears on the bill, insist on paying only for what was agreed, and if you must pay to get the car back, write paying under protest on the paperwork.
Frequently asked questions
What should I ask a garage before booking?
Six things. Is that a quote or an estimate, can I have it itemised in writing, will you ring me before doing anything that is not on it, what parts will you use, what is guaranteed and for how long, and how long will you have the car. If you are booking because of a symptom rather than a known job, add a seventh: what do you charge to diagnose it, and is that deducted from the repair if I go ahead. Ask all of them at booking, not at collection.
What is the difference between a quote and an estimate?
A quote is a price the trader has agreed to do the work for, and it should say what work is included. An estimate is the trader's best guess at what the work will cost, and it does not bind them in the same way. If you were quoted and the bill comes in higher for the same work, that is a problem. If you were given an estimate, a modest difference is not necessarily wrong. Ask which one you are being given, and get it in writing either way.
Can a garage do extra work without asking me?
It should not, and you should make that explicit when you book. Citizens Advice is clear that if you asked for a specific piece of work and the garage did extra work you did not ask for, you can ask them to undo it, and if that is not possible you should insist on paying only for the work that was agreed. Avoid saying do whatever it needs when you book, because that hands the garage the right to decide the work, and you will then owe for whatever was genuinely necessary at a reasonable price.
Can a garage keep my car if I refuse to pay the bill?
Yes, while the bill is in dispute. A garage is entitled to keep your vehicle until a disputed bill is settled, a right known as a lien, although it is not allowed to sell or dispose of the car during the dispute. If you need the car back urgently, the usual approach is to pay under protest: write the words paying under protest clearly on the garage's copy of the repair order and on any receipt, so paying is not treated as accepting the charge, then pursue the money afterwards.
Does the garage have to put the quote in writing?
There is no rule that forces a garage to write a price down, but a written itemised price is what any later complaint would rest on, and an email or a text is enough. It also lets you compare garages properly, because an hourly labour rate tells you nothing until you know how many hours have been allowed for the job. A garage that will not put any figure in writing at all has told you something useful about how the rest of it is likely to go.
What if the work is done badly?
The Consumer Rights Act 2015 requires a service to be carried out with reasonable skill and care. Where it is not, you have the legal right to have the work done again or to a price reduction. That sits on top of any guarantee the garage offers, and no garage can sign away your statutory rights. Put the complaint in writing, keep the invoice and any evidence, and if the garage subscribes to a code of practice such as the Motor Ombudsman Service and Repair Code, its dispute service is the next step after the garage itself.
Is it rude to ask a garage lots of questions?
No, and how a garage reacts is part of the answer you are looking for. A professional garage has these conversations every day and will reply clearly and patiently. Irritation, vagueness or pressure to commit on the spot are reasons to try somewhere else. Two responses in particular should end it: a refusal to put any price in writing, and a refusal to agree to ring you before carrying out extra work.
How do I know a garage is qualified for an MOT?
Look for a DVSA approved MOT centre, marked by the blue sign with three white triangles. It means the centre and its testers meet official standards and are monitored by the DVSA. It is a reasonable signal even when you are booking ordinary servicing rather than a test, because the station has been inspected against a published standard.