GREAT SOUTHERN LOCK
Guide · Car keys
What a replacement car key actually costs — and why the range is so wide
Anyone who quotes you a car key price before asking the make, model and year is guessing. Here is what actually moves the number.
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Search for the cost of a replacement car key and you will get a range so wide it is useless. That is not evasiveness — the honest range genuinely spans from “cheap” to “more than you would like”, and which end you land on is decided by four things.
1. Do you still have a working key?
This is the single biggest factor, and it is worth understanding properly.
If you have one working key, a locksmith can copy and code from it. The mechanical cut is straightforward and the electronic side is usually a matter of adding a new key to a system that is already talking. Quick, comparatively cheap.
If every key is gone — the job the trade calls all keys lost — there is nothing to copy. The key has to be originated from the vehicle itself, and the immobiliser has to be reprogrammed to accept a key it has never seen. More time, more equipment, more skill, and on some vehicles a security waiting period the manufacturer imposes and nobody can shorten.
The gap between those two jobs is the single strongest argument for getting a spare cut on a quiet weekday rather than discovering the problem at 11pm in a car park in the rain.
2. What kind of key the car uses
Car keys are not one product. In rough order of cost:
- A plain mechanical key — older vehicles, no chip. Cheapest by a distance.
- A transponder key — a chip in the head of the key that the immobiliser has to recognise before the engine will start. Cutting alone is not enough; it has to be coded.
- A remote key fob — adds central locking, boot release and alarm functions that also have to be paired.
- A proximity or push-to-start smart key — keyless entry. The blank itself costs real money before anyone has done any work, and on European vehicles it can cost a lot of it.
3. The make, model and year
Two cars of the same age can be completely different jobs. Some manufacturers make key data readily available to the trade; others restrict it, and a handful of very recent models are genuinely dealer-only. A competent locksmith will tell you which situation your car is in on the phone, before anyone gets in a van, rather than after a wasted call-out.
Be suspicious of anybody who will not have that conversation.
4. When you call
After-hours, weekends and public holidays cost more than a Tuesday morning. That is true across the trade and it should be stated on the phone, not discovered on the invoice.
What about the dealership?
The dealership route is real but it is rarely the cheap one. In practice it usually means towing the vehicle in, waiting for a key to be ordered, and paying for both. A mobile automotive locksmith cuts and programs the key where the car is already sitting, which removes the tow entirely and for most vehicles is same-day.
There is a genuine exception: a small number of very recent models where the manufacturer holds the key data and no independent can originate a key. If your car is one of them, you should be told that rather than sold a call-out.
How to get an accurate number instead of a range
Have these four things ready when you ring and you will get a real figure rather than a brochure range:
- Make, model and year. The year matters as much as the model.
- Whether any working key still exists — anywhere, including one you cannot currently reach.
- Where the car is. Driveway, street, shopping centre, secure basement.
- Proof you own it. Registration and photo ID. No locksmith worth ringing will cut a key to a car without it.
The cheapest thing on this page is a spare key cut while your current one still works. It costs a fraction of an all-keys-lost job and it takes about twenty minutes. Almost nobody does it until after the expensive version has happened to them once.
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Every question on this page has a specific answer for your actual lock, car or building. One call, straight to the mobile, 24 hours.
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Questions
Common questions
Can a locksmith make a car key with no original?
Yes — that is an all-keys-lost job. The key is originated from the vehicle rather than copied, then programmed to the immobiliser. It takes longer and costs more than cutting a spare, but for most makes and models it does not need a tow.
Why is a smart key so much more expensive than a normal one?
Because the blank itself is an electronic device, not a piece of brass. Before any labour, a proximity key for a late-model European car can cost more than a whole job on an older vehicle. The programming is also more involved.
Can you program a key I bought online?
Sometimes, and it is worth asking rather than assuming. Cheap online blanks vary enormously in quality and some cannot be programmed at all, in which case you have paid twice. Ask before you buy, not after.
How long does a replacement car key take?
A spare is usually well under an hour. All-keys-lost takes longer, and on some vehicles there is a manufacturer-imposed security delay that nobody can shorten. You should get a time estimate before the work starts.
How much does it cost to replace a car key in Australia?
It depends almost entirely on the key type. A basic mechanical key for a pre-1995 car is the cheapest job in the trade. A transponder key needs cutting and programming to the vehicle. A remote head or flip key adds the remote. A proximity smart key for a recent European car is the most expensive, and if every key is lost the key has to be originated from the vehicle's own data, which is a different and longer job than cutting a spare. Give us the make, model and year on the phone and you get a real figure rather than a range.
How much should I pay for a replacement car key?
Enough to get a key that is cut and programmed properly, and no more. The two ways people overpay are going straight to the dealership when a locksmith can do the same job at the kerb, and buying a blank online then paying someone to make it work. The two ways people underpay and regret it are uncut blanks from marketplaces and operators who quote a headline price then add programming as an extra. Ask whether the quote includes cutting, programming and testing.
What is the cheapest way to replace a lost car key?
Have a spare cut before you lose the last one. Cutting a duplicate while a working key still exists is straightforward and can be booked at a time that suits you. Once every key is gone the job changes: the key must be originated from the vehicle, which takes longer and costs more, and it usually happens at the worst possible moment. If you are already at that point, a mobile locksmith is almost always cheaper than towing the car to a dealership.
How much does it cost to programme a car key?
Programming is rarely sold separately from cutting, because a cut key that is not programmed will not start the car and a programmed key that is not cut will not turn in the door. Treat any quote that separates them as incomplete and ask for the all-in figure. If you have bought a key online and only need it programmed, say so when you ring — we will tell you honestly whether that blank can be made to work before you book.
Locked out, or need a key cut right now?
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