How Many Miles Is Too Many For A Used Car?

There is no single number of miles that is always too many for a used car, because the answer depends on how the vehicle has been maintained, the type of driving it has done and the make and model in question. Mileage is a useful guide, but it should never be the only deciding factor when buying second-hand.
When people first look at a used car advert, the mileage is often the figure that jumps out. A car with 30,000 miles sounds reassuring, while one with 120,000 can raise concerns. Yet a higher-mileage car that has been carefully serviced and mainly driven on motorways may actually be a safer choice than a low-mileage car that has been neglected or only used for short, stop-start journeys.
Why Does Mileage Matter?
Mileage matters because it is linked to wear and tear. The more miles a car has covered, the more stress has been placed on the engine, gearbox, suspension and other mechanical parts. This increases the likelihood of components needing replacement.
However, not all miles are equal. Long motorway trips at steady speeds are far less punishing on a car than constant urban driving with frequent braking and acceleration. For that reason, two cars of the same age and mileage can be in very different condition.

What Is Considered Average Mileage In The UK?
To judge whether a car has high or low mileage, it helps to know what is average. In the UK, the Department for Transport reports that the typical car covers around 7,400 miles per year.
A five year old car with about 37,000 miles would therefore be considered average. If the figure is significantly higher or lower, it is worth asking why.
Low mileage can sometimes be a red flag. A car that has been driven infrequently may have suffered from lack of use, leading to issues such as flat batteries, perished tyres or problems with the brakes.
How Many Miles Is Too Many?
There is no universal cut-off point. Some buyers feel uncomfortable with anything over 100,000 miles, but many modern cars are capable of reliably covering 150,000 miles or more if properly looked after. Certain makes and models are known for their durability, with examples comfortably passing 200,000 miles while still being dependable daily drivers.
Instead of fixating on the number alone, it is better to consider the whole picture: service records, MOT history, how the car has been driven and how it feels on a test drive.
What Should You Ask The Seller About Mileage?
If a car has high mileage for its age, ask the seller what type of journeys it has mainly been used for. Long motorway commutes are often less damaging than years of short school runs or local errands.
Check whether major components that typically wear out have already been replaced. For example, a high-mileage car with a new clutch, timing belt and tyres may offer better value than a lower-mileage car that will need all those jobs done soon.
Are High-Mileage Cars Always Cheaper?
Mileage has a strong influence on value. A car with 120,000 miles will usually be cheaper than one with 60,000, even if they are otherwise identical. This can make high-mileage cars attractive bargains, especially for drivers who only need a vehicle for a few years.
However, cheaper purchase prices can be offset by higher running costs if repairs are needed. The key is to weigh up the saving against the potential expense and risk.
How Does Mileage Affect Resale Value?
If you plan to sell the car in a few years, think about resale. Buyers often prefer lower-mileage vehicles, so a car that already has very high mileage may be harder to sell on or may only achieve a low price.
On the other hand, if you intend to run the car into the ground and keep it until the end of its life, resale value may not matter to you.
What Role Does Maintenance Play?
Maintenance is often more important than mileage. A car with 140,000 miles that has been serviced every year, with records to prove it, can be a much safer bet than one with 60,000 miles but patchy history. Look for evidence of oil changes, fluid top-ups, brake checks and replacement parts.
It is also worth checking MOT histories online, which reveal mileage consistency and any advisories noted in previous years. This helps confirm that the mileage is genuine and shows how the car has aged.

Final Thoughts
When it comes to mileage on a used car, there is no fixed number that is always too high, as it really depends on several factors. While 100,000 miles may seem like a psychological barrier, many vehicles today are designed to last far longer with the right care. Mileage should always be considered in context, alongside service history, condition, type of use and overall value.
For buyers, the smartest approach is not to fear the number on the dashboard but to ask the right questions, carry out checks and look at the bigger picture. With careful research, even a higher-mileage car can be an excellent and cost-effective choice.

Matthew is the Director of Selling My Motor, bringing over a decade of experience in the motor trade to the company. His extensive knowledge and passion for vehicles have been instrumental in establishing SellingMyMotor as a trusted name in the industry.