For most UK buyers, a used car is the better buy. New cars lose a large share of their value in the first few years, and a nearly-new or 2 to 4 year old car lets someone else absorb that hit. A new car makes more sense if you want a full manufacturer warranty, the latest safety and tech, or you plan to keep it for many years. The right answer depends on your budget, how long you will keep the car and how much risk you are comfortable with.
The quick verdict
- Choose used if you want the lowest cost per year of ownership, a bigger choice for your budget, or a higher spec for less money.
- Choose new if you want a known history from day one, a long warranty, the newest technology, or a deal that suits your finances.
Depreciation: the biggest cost of buying new
Depreciation is the drop in a car's value over time, and it is usually the largest cost of owning a car. It tends to be steepest in the first year or two. Buy new and you pay for that drop. Buy used and the previous owner has already paid much of it, so you get more car for your money and the value falls more slowly while you own it.
Warranty and peace of mind
A new car normally comes with a manufacturer warranty, and some brands offer long cover. It also needs no MOT until it is three years old. That means fewer surprises, at least early on.
Used cars can still be protected. Franchised dealers often sell approved used cars with warranty and breakdown cover. Buying from a dealer also gives you legal rights under the Consumer Rights Act 2015: the car must be of satisfactory quality, fit for purpose and as described. Private sales give you far less protection, so you need to check more yourself.
Running costs and finance
New cars are often more efficient and cheaper to service in the early years, but insurance and the purchase price are usually higher. Check the road tax (VED) rules for the specific car, as they differ by registration date, fuel type and price. Finance deals on new cars can look attractive, but compare the total amount payable, not only the monthly figure. Used car finance often has a higher interest rate, but the borrowed sum is smaller.
Electric and hybrid cars
With electric and hybrid cars, the used market can be a good way to try the technology at a lower price. Battery condition and charging needs matter, so look closely at the age, usage and any battery warranty that remains. A new EV may suit you better if you want a long warranty and the latest range and charging speeds.
The risks of buying used, and how to reduce them
The main drawback of a used car is the unknown. A history check helps you see what the seller may not mention. Before paying, look into the following:
- MOT history: past failures, advisories and recorded mileage readings can show how the car has been looked after. DVSA MOT history is available for free online.
- Mileage and clocking: compare the mileage at each MOT with the odometer and the service history. Gaps or drops are a red flag.
- Insurance write-off status: a car recorded on the MIAFTR database as Cat S or Cat N has been declared a write-off and repaired. Cat A and Cat B cars should never return to the road as whole vehicles. A repaired write-off can be legal to drive, but it can be worth less and harder to insure or resell.
- Stolen marker: check whether the car has been reported stolen on the Police National Computer (PNC).
- Outstanding finance: a car with unpaid finance may still belong to the finance company, which could try to recover it even after you have paid the seller.
- Previous keepers and plate changes: many owners in a short time, or a changed registration, are worth asking about.
Before you commit, you can check the vehicle's registration on motorpeek.com to see this kind of history in one place. We are an independent site and are not affiliated with the DVLA, DVSA or any government body. No check can promise a car is problem-free, so still inspect it in person, take a test drive and consider an independent inspection.
Which one should you buy?
If your priority is value, a well-checked used car aged 2 to 4 years is usually the sweet spot. If you want certainty, a long warranty and the newest features, and you can afford the depreciation, new is a reasonable choice. Whichever you pick, set a total budget that includes insurance, tax, servicing and fuel or charging, not just the purchase price.
Frequently asked questions
Is it cheaper to buy a used car or a new car?
Buying used is usually cheaper, both in purchase price and in overall cost. A new car loses much of its value in the first few years, and a used buyer avoids most of that loss. Insurance can also be lower on an older car, although running costs and repairs vary by model.
Is a 3-year-old car a good buy?
A 3-year-old car is often good value because the steepest depreciation has already happened. It may still have some manufacturer warranty left, and it will be due its first MOT around that age. Check its history and service record before you buy.
What should I check before buying a used car?
Check the MOT history, mileage consistency, insurance write-off records (Cat S and Cat N), the stolen marker, outstanding finance and the number of previous keepers. Then view the car in person and take a test drive. A vehicle history check on its registration number helps you spot problems early, but it cannot guarantee the car is free of faults.