How does What Car? test used cars compared to new ones?

When What Car? tests a new car, our experts assess the car from every perspective – from the fuel economy you can really expect through to rear legroom and acceleration times. We also analyse costs and the general ownership experience to give new-car buyers the most well-informed view. But when we write a used car buying guide, we look at each model through the prism of a used-car buyer. That means we interrogate tens of thousands of responses to our reliability survey to find out not only how reliable each car is, but what goes wrong – and how good dealers are at fixing the problem. We look at pricing, too, allowing you to choose between various models at different ages, and once you’ve settled on one, we’ll explain which version will best suit your needs.

What are the most reliable used car brands in 2026?

According to our extensive ownership survey data, Honda makes the most reliable used cars. Its enviable 96.6% score put it just ahead of Mini (96.4%), Suzuki (95.7%), Toyota (95.2%) and Vauxhall (95.1%). So if you’re buying a used car which is less than five years old, these are the best bets for hassle-free motoring.

Is a high-mileage modern car still a safe purchase?

Absolutely. Modern cars are built to tighter tolerances and use more advanced electronics, meaning they’re less likely to leave you stranded.What’s more important than mileage is an impeccable service history, showing that oil changes have been carried out regularly – in line with the manufacturer’s service intervals – and other major components have been properly maintained or replaced.

How do I check a used car's history before buying?

When you view the car, it’s important to see what work has been done – and when. Depending on the age of the car, you’ll be looking at a pile of service history paperwork to scan through, or a digital logbook, which should be accessible via your local main dealer.It’s also a good idea to view the DVLA’s MOT checker, which is a free service enabling you to see the results of previous MOT test results, so you can get a better view of previous faults and whether they’ve been addressed.We strongly recommend you pay for a vehicle history check from providers such as HPI, the AA or the RAC. These services will tell you if the car you’re looking at has been recorded as stolen, as an insurance write-off or subject to outstanding finance.

What should I look for during a used car test drive?

Once you’ve settled on the car you want, you’ll need to drive it. Here you’ll be trying to find out if the car fits your needs, and to check that there’s nothing mechanically amiss.The former is very much subjective, depending on how you value factors such as space and comfort. But when it comes to spotting mechanical maladies, take the following steps:Listen for strange rattles from the engine, particularly when starting the carBangs when driving over bumps can point to suspension issuesJudders through the steering wheel could suggest a range of steering or suspension problemsCheck the clutch and manual gearbox engage smoothly, and if you’re driving an automatic, gearshifts should be similarly smoothCheck all the car’s features work – from headlights to air-con and electric seats. Push all the buttons, in other words.Uneven tyre wear can suggest geometry problems which can be easily corrected – but could point to something more serious

What is the difference between a dealer ‘Approved Used’ car and a private sale?

The distinction between a dealer sale and a private sale is clear: the former will be selling the car as part of their business, and as such has legal obligations. A private sale is usually a regular person looking to sell their car.Approved used cars are different. These used cars are typically only sold through a main ‘franchised’ dealership and have been inspected, reconditioned, and given a manufacturer-backed seal of approval. You can expect warranties, 100+ point checks and a fully-checked vehicle history, offering peace of mind.

How often are your used car reviews updated?

We update our used car reviews on a rolling basis, emphasising the most in-demand models. When we update these reviews, we take a forensic look at pricing, checking the latest prices on the used car forecourts and trying to find those models that offer the best value when bought at a given age. We’ll also update any tax changes and recall information, and we’ll analyse tens of thousands of responses to our reliability survey in order to point out how reliable a particular car is and to highlight any recurring age-related faults.

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Used Seat Leon 2020-present

The Seat Leon is good to drive, spaciousand well-equipped, but its reliability record is poor

Used Peugeot 308 2022-present

The Peugeot 308 represents good value used, but many rivals ride and handle better.

Used Toyota GR Supra 2019-present front cornering

Used Toyota GR Supra 2019-2023

Brazen and brutish, the Toyota GR Supra is thrilling, even if some rival sports carsare sharper in the bends

Used BMW iX3 2021-2025

From its driving experience to its interior quality, the BMW iX3 is a class act and a good used buy.

Used Mercedes S-Class 2021-present

The Mercedes S-Class hasa stunning interior, sublime comfort and staggering tech. Not cheap but highly desirable.

Used Peugeot 3008 2024-present

The Peugeot 3008 has distinctive looks and a plush interior, but used family SUV rivals are better all-rounders

Used Tesla Model 3 2019-present

The Tesla Model 3 is a terrific executive car withlots of tech and a greatelectric range. It's a brilliant used buy.

Used Polestar 2 2020-present

The decently affordable Polestar 2 has a smart interior and a long range, but its driving dynamics disappoint.

Featured used car reviews

Used Nissan Qashqai 2021-present

The Nissan Qashqai is a smart,comfortable and plushfamily SUV. It's good value, too.

Used Jaguar F-Pace 2016-2024

The Jaguar F-Pace makes a decent used buy, beinggood todrive, well equipped andreasonably practical. There are more comfortable alternatives, though.

Used Volvo V40 2012-2019

Not the best of its type to drive, but the popular Volvo V40 has a fine interior and lots of safety kit.

Used Ford Fiesta 2017-2024

The Ford Fiesta is one of the best used small cars you can buy, although its reliability can be mixed.

Used car comparisons

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New Volkswagen Golf GTI vs used Volkswagen Golf GTI

The 2005 Volkswagen Golf GTI is still revered by fans. We put it up against the latest version to see what 20 years of progress has brought to its game

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New Kia Sportage vs used Volvo XC60

The Kia Sportage is one of the best SUVs you can buy new, but would you be better off spending the same money on a one-year-old Volvo XC60 and getting a prestige badge?

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Used test: Volkswagen Golf vs Volkswagen T-Cross

Comfy and practical, a used VW Golf is a great buy, but are you better off with a small SUV like the VW T-Cross?

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Used test: Skoda Kodiaq vs Volkswagen Tiguan Allspace

If you're after a reasonably priced seven-seat SUV, a used Skoda Kodiaq or VW Tiguan Allspace might already be on your radar. But which one should you buy?

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How we test used cars

For more than 50 years, What Car? has provided comprehensive expert reviews for both new and used cars. While both are done with the same rigour, for used cars, we prioritise reliability via owner surveys, and evaluate depreciation to find the best value — ensuring you're fully informed when you make your next purchase.

How we test used cars

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How to buy a used car

All you need to buy the best used car

Most reliable cars

See the cars that won't let you down

Used car awards

The very best used cars to buy today

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New Volkswagen Golf GTI vs used Volkswagen Golf GTI

New Kia Sportage vs used Volvo XC60

Used test: Volkswagen Golf vs Volkswagen T-Cross

Used test: Skoda Kodiaq vs Volkswagen Tiguan Allspace

How we test used cars

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How to buy a used car

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