What to check when buying a used car in the UK: A complete guide

Buying a used car can be a great way to save money while finding a vehicle that suits your lifestyle and budget. However, with so many options available, knowing what to look for before making a purchase is essential.

Whether you're buying your first car, upgrading your current vehicle or looking for something more affordable, taking the time to check a few important details can help you make a confident decision.

At Aston Autopark in Melton Mowbray, Leicestershire, we understand that choosing your next car is an important decision. That's why we've put together this used car buying checklist to help you know what to check before buying a used car in the UK.

​1. Check the Car's Mileage

Mileage is often one of the first things buyers look at when considering a used car, but a higher mileage doesn't necessarily mean a vehicle is in poor condition.

A car that has covered more miles but has been regularly serviced and well maintained could be a better choice than a lower-mileage vehicle that hasn't been properly looked after.

When checking mileage, consider:

  • Age of the vehicle: Does the mileage seem reasonable for its age?
  • Service history: Has the car been maintained according to the manufacturer's recommendations?
  • Previous usage: Has the vehicle mainly been used for longer journeys or shorter trips?
  • General condition: Does the wear on the interior and exterior appear consistent with the recorded mileage?

Remember, mileage is just one factor. The vehicle's overall condition and maintenance history are equally important.

Choosing a used car

2. Review the Service History

A car's service history can tell you a lot about how well it has been maintained by previous owners.

A full service history generally means that the vehicle has records of servicing carried out at the recommended intervals, although the exact documentation may vary.

When reviewing the service history, look for:

  • Regular servicing and oil changes.
  • Records of important maintenance and repairs.
  • Evidence of replacement parts, such as brakes or timing belts, where applicable.
  • Any significant gaps in the maintenance records.

A missing or incomplete service history doesn't automatically mean you should avoid a car, but it's worth asking questions to understand how it has been maintained.

3. Check the MOT History

One of the most useful checks when buying a used car in the UK is reviewing its MOT history.

An MOT test checks whether a vehicle meets minimum road safety and environmental standards at the time of testing. Most cars require their first MOT when they reach three years old, followed by annual tests.

You can check a vehicle's MOT history for free using the official GOV.UK website.

Pay particular attention to:

  • Previous MOT failures: What issues were identified, and have they been repaired?
  • Advisory notices: Are there any potential maintenance issues that may need attention?
  • Mileage records: Do the recorded mileages increase consistently over time?
  • MOT expiry date: How long remains before the next test is due?

Keep in mind that a valid MOT certificate doesn't guarantee a car is free from mechanical problems. It's still important to inspect the vehicle carefully.

4. Inspect the Exterior and Interior

Before buying a used car, take time to inspect its general condition.

Exterior checks

Walk around the vehicle and look for:

  • Scratches, dents or signs of rust.
  • Uneven paintwork or inconsistent panel gaps.
  • Cracks or chips in the windscreen.
  • Signs of damage to headlights and mirrors.
  • Uneven tyre wear or visible damage.

Some cosmetic wear is normal, particularly on older vehicles. However, anything unusual is worth discussing with the seller.

Interior checks

Inside the car, make sure everything appears to be working correctly.

Check the seats, dashboard, windows, mirrors, air conditioning and other equipment included with the vehicle.

It's also worth checking for unusual smells, excessive wear or signs of water damage.

5. Check the Tyres and Brakes

Tyres and brakes are essential safety components, so they deserve particular attention when inspecting a used car.

In the UK, the legal minimum tyre tread depth for most passenger cars is 1.6mm across the central three-quarters of the tread around the entire circumference.

However, tyres may need replacing before reaching this limit, depending on their condition.

Look for uneven tyre wear, cuts, bulges or other visible damage.

When checking the brakes, listen for unusual noises and pay attention to how the vehicle responds during the test drive.

If you're unsure about the condition of the tyres or brakes, consider asking a qualified mechanic to inspect them.

6. Take the Car for a Test Drive

A test drive is one of the best ways to understand whether a used car is right for you.

It gives you the opportunity to assess how the vehicle handles, how comfortable it feels and whether anything seems unusual.

During your test drive, pay attention to:

  • Engine performance: Does the engine start easily and run smoothly?
  • Braking: Does the car slow down smoothly without unusual vibrations?
  • Steering: Does the vehicle respond correctly without pulling to one side?
  • Transmission: Are gear changes smooth, whether manual or automatic?
  • Suspension: Are there any unusual knocks or noises when driving over uneven surfaces?
  • Comfort and visibility: Is the driving position suitable for you?

Try to drive on different types of roads where possible, and make sure you're appropriately insured before driving.

7. Check the Vehicle's Documents and History

Before completing your purchase, it's important to confirm that the vehicle's details and paperwork are correct.

Ask to see the V5C registration certificate, commonly known as the logbook, and check that the vehicle identification number (VIN) matches the vehicle.

You should also consider obtaining a vehicle history check to identify potential issues such as:

  • Outstanding finance.
  • Previous insurance write-offs.
  • Stolen vehicle records.
  • Mileage discrepancies.

You can check vehicle registration details and MOT information through GOV.UK. A more comprehensive vehicle history report may require a paid service.

Taking these precautions can help you avoid unexpected problems after purchasing.

8. Consider the Running Costs

The purchase price is only part of the overall cost of owning a car.

Before choosing a used vehicle, consider how much it will cost to run and maintain.

Important costs include:

  • Insurance: Premiums vary depending on the vehicle and your personal circumstances.
  • Fuel: Consider whether petrol, diesel, hybrid or electric is best suited to your journeys.
  • Vehicle tax: Check the applicable annual rate.
  • Servicing and maintenance: Some vehicles may have higher maintenance costs than others.
  • Tyres and replacement parts: Costs can vary significantly between models.

Thinking about these expenses in advance will help you choose a vehicle that fits your long-term budget.

9. Buy from a Reputable Seller

Choosing where to buy your used car is just as important as choosing the vehicle itself.

Whether you're purchasing privately or from a dealership, take time to research the seller, read customer reviews and ask questions about the vehicle.

Buying from a dealership can offer additional consumer protections compared with buying privately, including rights under the Consumer Rights Act 2015.

A reputable seller should be transparent about the vehicle's condition, history, price and any applicable warranty terms.

Don't feel pressured to make a decision before you're comfortable with the information provided.

Used car buying checklist: quick summary

Before buying a used car, make sure you have:

□  Checked the mileage and vehicle age.

□  Reviewed the service history.

□  Checked the MOT history and any advisories.

□  Inspected the exterior and interior.

□  Checked the tyres and brakes.

□ Taken the vehicle for a test drive.

□ Verified the V5C and vehicle details.

□ Considered a comprehensive vehicle history check.

□ Calculated insurance, tax and running costs.

□ Researched the seller and understood the purchase terms.


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Looking for a used car?

Finding the right used car doesn't have to be complicated. By checking the vehicle's history, condition and running costs, you can make a more informed decision and choose a car that suits your needs.

At Aston Autopark in Melton Mowbray, we offer a wide selection of used cars across different makes, models and budgets.

Whether you're searching for an affordable first car, a practical family vehicle or an automatic car for everyday driving, explore our latest stock to see what's available.

Ready to find your next car?

Browse our used cars for sale in Leicestershire and discover your next vehicle at Aston Autopark.