Real MPG: most economical diesel cars - and the least
Diesel cars might not be fashionable, but if you do big miles and want small fuel bills they still make huge sense. Here are the most economical – and the ones which will cost you the most to run
News
How we create the best news and advice
When it comes to news and advice, you can trust What Car? to give you all information you need on buying and running your car
Advice
What to do if you put the wrong fuel in your car
In the UK someone puts the wrong fuel in their car every three and a half minutes - here's what to do if you're one of them
Slideshow
True MPG: most efficient cars for town driving
What Car?'s True MPG tests show what you can really expect from a car, and here we reveal the models that perform best if you do most of your driving on congested urban roads
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Real MPG: how we test cars
What Car?'s laboratory tests use real-world driving routes to show what fuel economy you can really expect from your next car - here's how we calculate a car's Real MPG
Slideshow
True MPG: most efficient cars in every class
Our True MPG tests show what fuel economy you can really expect from a car. Whether you're after a small hatchback, a luxury SUV or something in between, these are the best performers
Advice
Euro 1 to Euro 6: how clean is my car?
All new cars must comply with European exhaust emissions standards, so what is the latest standard and what does it mean for you?
Slideshow
The most fuel-efficient Motability cars
Looking for a Motability car that’s cheap to run? We list the top 10 most fuel-efficient models in our True MPG tests
Slideshow
True MPG: which cars beat their official figures – and which are farthest away?
What Car?'s True MPG tests show what fuel economy you can really expect from a car, with some models beating their official figures, but others falling more than 25% short...
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True MPG: which cars beat their official figures – and which are farthest away?
What Car?'s True MPG tests show what fuel economy you can really expect from a car, with some models beating their official figures, but others falling more than 25% short
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True MPG: which cars beat their official figures?
What Car?'s True MPG tests show what fuel economy you can really expect from a car, with some models falling more than 25% short of their official figures, but others beating them
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Petrol, diesel, hybrid, plug-in hybrid or electric – which is the cheapest to own?
We compare hybrid and electric models with petrol and diesel ones to find out which fuel type makes most sense
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Real MPG: most efficient prestige SUVs
What are the most efficient prestige SUVs? What Car?'s Real MPG tests reveal what fuel economy you can really expect from a car.
Feature
Real MPG: most efficient coupes, convertibles and sports cars
What Car?'s Real MPG tests show what fuel economy you can really expect from a car. Here, we reveal the best and worst-performing coupés, convertibles and sports cars we've tested
News
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Our free online tool helps car buyers decide if a diesel, petrol or electrified car will suit their needs best
