Why Two Car Keys Matter: Convenience, Value, and Security

When buying or selling a car, attention typically centres on major factors like price, mileage, or condition. While these are undeniably important, an often-overlooked yet critical detail is the number of keys included in the sale. New cars almost always come with two keys, but in the used car market, it’s surprisingly common to receive just one. This seemingly minor detail can significantly impact convenience, security, and even the vehicle’s value.

Whether you’re a buyer or a seller, understanding the implications of having only one key—and addressing it proactively—can save you time, money, and unnecessary stress.

Why do so many used cars have just one key?

It’s not unusual for used cars to come with a single key, and the reasons are straightforward: lost keys are extremely common. Nearly half of UK drivers report misplacing their car keys at some point. Over time, spare keys are often lost, damaged, or simply forgotten.

In some cases, a previous owner may have damaged the spare and never replaced it, or it might have been misplaced during a change of ownership. Regardless of the reason, the absence of a spare key typically becomes the next owner’s problem when the car is resold.

The implications of having only one car key

Reduced resale value and slower sales
For sellers, providing only one key can make your car less appealing. Buyers view vehicles with a full set of keys as more complete, secure, and convenient. On the other hand, cars with only one key may raise doubts or lead to lower offers, as buyers anticipate the additional cost and hassle of obtaining a replacement.

Selling a car with one key is akin to listing a vehicle with a noticeable issue, like a scratch or missing service records. Buyers may hesitate, negotiate for a discount, or skip your listing altogether in favour of cars with two keys.

To enhance your car’s appeal, it’s worth investing in a duplicate key before listing it for sale. Although this involves an upfront cost, it can help you secure a quicker sale at a better price.

Inconvenience for buyers
For buyers, purchasing a car with a single key can be a logistical headache. Losing or damaging that lone key means navigating the time-consuming and often expensive process of obtaining a replacement. Advanced keys with transponders or keyless entry systems can cost hundreds of pounds to replace.

Moreover, the absence of a spare can lead to frustrating scenarios, such as accidentally locking yourself out of your vehicle with no fallback option. This risk is easily avoided if two keys are provided at the point of sale.

Potential security risks
Missing keys also pose security concerns. If the spare isn’t accounted for, there’s a chance someone else could have access to your car. This is particularly worrisome if the previous owner doesn’t know the key’s whereabouts or if it was stolen.

To safeguard against this, buyers should consider having the car’s locks reprogrammed when purchasing a vehicle with only one key. Sellers who take this step can also reassure potential buyers, potentially boosting the car’s resale value.

Tips for car buyers

Always verify the keys
When buying a used car, always ask how many keys are included. Don’t just take the seller’s word for it—test both keys to confirm they work properly. Whenever possible, request written confirmation of the number of keys included in the sale.

This small step can save you from unexpected expenses and give you greater peace of mind.

Frequently asked questions

Do certified pre-owned (CPO) cars come with two keys?

Most certified pre-owned vehicles from authorised dealerships include two keys as part of their certification. However, this isn’t guaranteed when buying from independent dealers. Always verify the number of keys before finalising the purchase.

Can dealerships sell a car with only one key?

Yes, dealerships can legally sell a car with one key unless the sales agreement specifies otherwise. New cars typically come with two keys, but for used cars, it’s essential to confirm this detail upfront.

What should I do if I bought a car with only one key?

If the seller promised two keys but delivered only one, you might be entitled to a replacement or compensation, provided this was explicitly stated in the agreement.

How much does a missing key affect a car’s value?

Services like Webuyanycar.com often deduct hundreds of pounds for cars missing a second key. The exact amount depends on the type and complexity of the missing key.

How much does it cost to replace a car key?

Car key replacement costs vary depending on the make, model, and type of key. Basic keys are more affordable, while advanced keys with transponders or keyless systems are more expensive. For an accurate quote, contact us today.

What should I do if my car keys are stolen?

If your keys are stolen, act immediately. Contact us to deactivate the missing keys and prevent unauthorised access. We can also reprogram your locks and provide replacement keys for your peace of mind.

Don’t let missing keys become a problem

Whether buying or selling a car, the number of keys matters more than you might think. Sellers can boost their car’s value and appeal by providing two keys, while buyers should ensure they receive a full set to avoid future headaches.