Can Bunnings or Mitre 10 Cut Your Car Key?
The hardware store can cut the metal. Whether the engine then starts is a different question — and it depends on one thing you can check in your own hand right now.
It is the first thing most people try, and for good reason: the hardware store is open, it is close, and key cutting costs a few dollars. For a house key or a padlock key that is the right answer and you should go.
For a car key, it depends entirely on what sort of key you are holding. Half the people who ask this question can be sorted at Bunnings for the price of a coffee. The other half will drive home with a key that turns in the door and will not start the engine.
Here is how to tell which half you are in before you make the trip.
What the hardware store can actually do
Bunnings and Mitre 10 cut **blanks**. A machine traces the pattern of your existing key onto a new piece of metal, and it does it well. That covers house keys, padlock keys, garage keys, letterbox keys, and older car keys with no electronics in them.
What they cannot do is program a chip, because that is not a cutting job. It needs diagnostic equipment that talks to your car's immobiliser, and no hardware store carries it. This is not a criticism of them — they sell timber and paint, and they are not pretending otherwise.
The test that tells you in ten seconds
Look at the head of your key — the plastic part you hold.
**If it is a plain piece of metal all the way through**, with no plastic head and no buttons, the hardware store can almost certainly help you. Cars built before roughly the mid-1990s use these.
**If it has a fat plastic head**, there is a transponder chip inside it. The blade can be cut anywhere; the chip has to be paired to your car or the engine will not turn over.
**If it has buttons, or no blade at all**, it is a remote or a proximity key. Cutting is not really the question any more — see our transponder key programming page for what that job involves.
There is a quicker version of this test. If your car was built after about 1998 and sold new in New Zealand, assume there is a chip. Immobilisers became standard equipment, not an option.
What happens if you get the blade cut anyway
It will work in the door. It will go into the ignition and turn. The engine will crank and then cut out after a second or two, or it will not start at all, and the immobiliser light on the dash will flash at you.
That is not a faulty key. That is the immobiliser doing exactly its job — refusing to run for a key it does not recognise. The metal is right and the electronics are missing.
People often bring us that key. It is not wasted: if the blade was cut correctly we can usually program a chip to it rather than starting again, which makes the hardware store trip a partial saving rather than a total loss. Bring it with you.
What it costs to do it properly
A plain metal key starts from $20 with us too, so if that is genuinely what you have, use whoever is closest — we would rather tell you that than sell you something you do not need.
A key with an immobiliser chip starts from $120, cut and coded at your vehicle. A smart or proximity key starts from $265. Those are starting points; where your car lands depends on the make, model and year. Our key cutting page goes through it properly.
Why we come to you instead
The other difference is that you have to get to the hardware store. If your only key is lost, broken in the lock, or sitting on the passenger seat of a locked car in the Te Rapa car park, that is not a small detail — it is the whole problem.
We are mobile across Hamilton and the wider Waikato, so the van comes to the vehicle with the blanks, the cutter and the programming equipment in it. There is nothing to tow and nothing to drive to.
Common questions
Can Bunnings cut a car key?
They can cut the metal blade of a plain key with no chip in it, and for an older car that is genuinely all you need. They cannot program a transponder chip, so on any car built from roughly 1998 onward the cut key will open the door but will not start the engine.
Does Mitre 10 do car key cutting?
Same answer as Bunnings — the blade, yes; the chip, no. Both stores cut blanks well and neither carries immobiliser programming equipment. If your key has a fat plastic head or buttons on it, cutting alone will not be enough.
How do I know if my car key has a chip in it?
Look at the head. A plain metal key with no plastic head almost never has one. A thick plastic head almost always does. If the car was sold new in New Zealand after about 1998, assume there is a chip — immobilisers became standard rather than optional around then.
I already had a key cut and it will not start the car. Can it be fixed?
Usually, yes, and do not throw it away. If the blade was cut accurately we can often program a chip to that same key rather than supplying a new one, which saves you the cost of the blank. Bring it out with you when we come.