Cars advice guides

Expert advice from Which? on the most reliable new and used cars, how to buy and sell, finance options, fuel economy, tyres, tax and how to find a good garage, plus unique interactive tools.

31 articles

How to buy the best car

We explain how to buy a cheap new car and find the right model for you

Best Buy cars

The best new and used cars you can buy, as tested by the experts at Which? Car. Find out which models we recommend, from tiny city cars to large SUVs and everything in between.

Petrol vs diesel vs hybrid cars: which is better?

Should I buy a diesel, petrol or hybrid car in 2024? Our expert guide reveals which cars are the most economical and what you need to know about emissions

18 December 2023

Best car scratch removers

Discover the best car scratch remover for buffing away minor scratches, that's easy to apply and keeps your car looking pristine

8 August 2024

Most reliable car brands - which car brands can you trust, and which may let you downMost reliable car models - our tool will help you pick a car that won't let you downCar reliability data - don't buy a new or used car without using the results of our re

Cheapest electric cars for 2024

We reveal the cheapest electric cars we’ve tested, along with the models that score highly in our tests

25 July 2024

How to buy car tyres

Choosing the correct tyres is important for performance and safety. This guide explains what to look for and how to buy the right tyres for your car.

Electric car charging guide

We reveal what it can cost to charge an electric car and how it compares with hybrid, petrol and diesel

Low-emission cars checker

Want to buy a low-emission car? Our free tool will help you find the cleanest cars on the UK market.

22 July 2024

Car finance options explained: how to get the best deal

Discover the different car finance options to find out which is best for you

19 July 2024

Which? Car Survey

The Which? Car Survey 2024 has now closed. Thank you to all who took part.

How to sell a car

Our top tips on getting the best price for your car. Plus we explain part exchange, classified ads, auctions and online car-buying services

13 June 2024

Where to buy a car

Is a dealership the best place to buy a new or used car? From car supermarkets to classifieds, we explain and rate all your car buying options.

13 June 2024

Supermarket petrol quality: what you need to know

Filling up at your local supermarket petrol station can often be cheaper than choosing a branded forecourt. But should you be worried about exactly what’s going in your tank?

13 June 2024

Driver calculators and tools

How efficient is your car? Use our fuel calculator to check your mpg

What to do if you have a car accident

If you’re unlucky enough to be involved in a car accident, here are the steps you need to take to deal with it quickly and smoothly.

30 May 2024

How we test

Every car we review is subjected to hundreds of tests in our lab and on the road. Find out how our tests help you choose the best car, and avoid the worst.

Car tax explained

How much car tax you'll need to pay on petrol, diesel, hybrid and electric cars from April 2024, and which cars are exempt (for now)

19 April 2024

Money-saving fuel and driving tips

Spending too much money fuelling your car? Our guide shows you how to make your money go further and cut the cost of driving

19 April 2024

Speeding fines and tickets explained

Learn your rights about speeding fines, whether it’s worth contesting a speeding fine and how technology can help you avoid them

1 March 2024

Best car breakdown cover

Find out the best car breakdown providers and how to buy the best breakdown cover.

Parking tickets and fines explained

Finding a parking ticket stuck to your car windscreen isn't nice. Our guide explains your rights, how to contest a parking ticket and avoid getting more.

5 February 2024

How to pass an MOT check

Is your car due its MOT check? Give your car a better chance of passing the test first time, with our easy tips to getting your car in shape.

22 January 2024

How to find a good garage

Finding a good, trustworthy garage that’ll charge you a fair price is crucial to keeping your car roadworthy and your bills in check. These tips will help you choose wisely.

22 January 2024

Winter tyres and snow socks

Winter tyres and snow socks can be fitted to almost any car and offer improved traction in slippery conditions. This guide explains the benefits and what to look out for.

How to get the best price on a car

Cars are expensive, but have plenty of room for discounts - as long as you know how to ask. We explain how to get the best price on a new car.

18 December 2023

How to care for and jump start your car battery

Jump starting a car with a flat battery using jump leads is really simple. Just follow our 10-step guide and you'll be back on the road quickly – and safely

18 December 2023

How to change a car tyre or use a repair kit

Got a flat tyre? Our videos and simple step-by-step guides can show you how to change a car tyre or use a tyre repair kit safely and effectively.

20 November 2023

Which? Don't Buy cars

Don’t Buy cars can be unreliable, unsafe, or simply awful to live with. The last thing you want from your shiny new car is buyer’s remorse.

12 September 2023

Should you buy a used car warranty?

Is a used car warranty essential or is it cheaper to pay for repairs upfront? Our guide explains how used car warranties work and whether they are worth the expense.

16 August 2023

Car safety features explained

Safety is a crucial factor in choosing a new car. We explain the raft of safety features available so you can have confidence in your choice.

24 May 2023