Can you sell a car with one key or a missing spare?

A missing spare key does not stop you from sending a car valuation enquiry. The useful starting point is to say how many working keys you have, what each one does and whether any key mentioned in the enquiry will be included with the car.

The Gladius form asks you to choose “Two or more” or “One key”. Our team considers that answer with the car’s registration, mileage, condition, history, faults and photographs when preparing your personal offer.

Count the working keys, not just the fobs

Put every key and fob together, then check which ones belong to the car. A plastic fob, an emergency blade and a remote may be parts of one key rather than three separate keys. Count complete, usable keys rather than loose components.

If you have two fobs but only one unlocks and starts the car, choose “One key” and explain that the second fob is present but not working. If both work, choose “Two or more”. Do not count a key for a roof box, steering lock or other accessory as a second vehicle key.

Test the functions you can check safely

You do not need to diagnose or dismantle a key. Use the car in its normal parked position and note the functions you can confirm:

• Does the remote lock and unlock the doors?
• Does the car recognise the key and start normally?
• Does keyless entry or keyless start work, if fitted?
• Does the boot or tailgate button work, if the key has one?
• Is the emergency blade present and secure?
• Is the casing complete, or is it cracked, taped or missing a button?

Report what happens rather than guessing why. “The spare unlocks the doors but the car does not recognise it for starting” is clearer than “the spare needs coding”. A flat key battery, damaged button and programming issue can look similar to a seller; unless you have confirmed evidence, describe the symptom rather than the cause.

Use plain examples in your enquiry

Short, specific descriptions help distinguish a straightforward missing spare from a faulty or incomplete key set:

• “One original remote key; it locks, unlocks and starts the car. No spare supplied when I bought it.”
• “Two fobs included. Main key works fully; spare starts the car but its remote buttons do not work.”
• “One working remote key. Second fob is present but the casing is cracked and the car does not recognise it.”
• “Two working keys, plus the locking-wheel-nut key in the boot.”

These are examples of useful wording, not diagnoses or promises about how a key affects an offer. If you know when or how a spare went missing, you can add that fact without speculating about where it is now.

Mention replacement or coding evidence

If a replacement key was supplied, say whether it is an original-branded key or another compatible type if you can tell. Keep any invoice or coding receipt with the vehicle records. An invoice may show what was supplied and when; do not claim that a key is original or professionally coded if you cannot verify it.

Do not upload an invoice, key-code card, driving licence, V5C or bank details with the initial vehicle photographs. The seven required image spaces are for the front, rear, left side, right side, odometer, front seats and rear seats. The optional eighth image is for damage or another useful vehicle detail, not personal documents or security codes.

Separate physical keys from digital access

Some cars also have a manufacturer app, phone key, key card or driver profile. Describe the physical working keys in the form and mention any separate digital access that is active. A phone app or digital key should not be presented as a spare physical key.

Keep access in place while you still need the car, then follow the manufacturer’s handover steps at the agreed time. Remove personal profiles and revoke old devices without sharing your account password. Our personal-data and connected-car guide explains the wider checklist.

Tell us if the key situation changes

The offered price is guaranteed provided the car matches the description in the initial enquiry. If a key is lost, stops working or is found after you submit the form, tell the team before accepting or before handover so the current key set can be considered accurately.

Do not wait until collection to reveal that a declared key is missing. Likewise, if you find a working spare after selecting “One key”, say so: the goal is for the car and included items to match the information reviewed by the team.

Prepare every included key for handover

After you accept an offer, the team calls within 24 hours to arrange free nationwide collection at an agreed time or a forecourt appointment. Put together every vehicle key and fob you said would be included, along with any locking-wheel-nut key, alarm remote or relevant accessory key.

Keep the keys with the original documents and service history, but do not hand them over until the agreed checks and sale process take place. The collection-day checklist covers the appointment, documents, belongings and changes since the enquiry.

One-key enquiry checklist

• Gather every vehicle key, fob, blade and key card.
• Count complete working vehicle keys, not accessory keys or loose components.
• Test normal locking, unlocking and starting functions where safe.
• Describe a faulty spare by its symptoms rather than guessing the cause.
• Mention replacement-key evidence if it is available.
• Keep security codes and personal documents out of vehicle photographs.
• Explain digital keys or app access separately from physical keys.
• Tell the team promptly if the key set changes after your enquiry.

What happens after the enquiry?

Our team reviews the details personally and sends a secure offer by text and email. There is no instant automated valuation. You can accept or reject the offer online within four days, with no obligation.

If you accept, we call within 24 hours to arrange collection or a forecourt appointment. Payment is instant once the sale is agreed, with no admin or transaction fees. Read how your Gladius car offer works for the complete decision process.

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