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Diesel Cars – The Facts

Should I buy a diesel car?

For some years now, successive governments have incentivised the buying of diesel cars. And with good reason too. The diesel car facts are these: they offer some 20% less CO2 emissions than a comparable petrol car and 20% better fuel economy. That’s why diesels have been so popular, with over 10 million diesel cars on UK roads today. Because of their advantages, diesel car owners have enjoyed lower car tax and there’s also been the benefit of lower company car tax. To find out about our current range of super-clean, new diesel cars, please send us an enquiry and we would be happy to discuss the advantages of diesel cars and book you a test drive.

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But just hang on a moment! You’ve probably read a lot of anti-diesel car propaganda in the press recently. So, two questions need to be answered: What has changed, if anything, and should I buy a diesel car today? Take a look below at some of the facts we’ve pulled together and then make your own mind up.

Diesel Cars

Diesel Cars: Frequently Asked Questions

How do I know if the new diesel car I’m interested in is environmentally friendly?

Look out for cars that conform to EU6, the European Directive that controls the emissions of both petrol and diesel cars. EU6 tests cover a variety of emissions that car engines produce.

What about these Ultra Low Emission Zones (ULEZ)?

In May 2017, the Mayor of London announced proposals to introduce an Ultra Low Emission Zone in central London in 2019, extending it to the South and North Circular roads by 2021. However, these proposals do not affect the new, less-polluting, Euro 6 diesel cars.

Brayleys Diesel Cars

From what I’ve seen in the press, a petrol car will be better for the environment than a diesel car, so why not just buy a petrol car?

There are a lot of alternative facts around. Let’s take the view of a recent article reproduced in ‘The Engineer’: “But new, well-maintained diesel cars, built to the latest standards have similar emissions to new petrol vehicles.”

Why is there talk of introducing a diesel scrappage scheme, if diesel cars are so great?

These proposals are aimed at older diesel cars, not the current generation of Euro 6 diesel models on sale in our showrooms.

Brayleys Diesel Cars

Doesn’t buying a new diesel car just all seem a bit too risky?

Not according to the government or the SMMT (Society of Motor Manufacturers and Traders). According to its Chief Executive, the SMMT "welcomes the publication of the government’s proposals for improving air quality across the UK, which clearly states that the new Euro 6 diesels which have been on sale for the past two years will not face any penalty charges anywhere in the UK.”

Noxious NOx

Nox, Latin for night, and it just sounds nasty, doesn’t it? In terms of cars, NOx refers to nitrogen oxides. These are the sooty deposits that can be discharged into the atmosphere by both petrol and diesel cars and which can have a negative effect on the atmosphere in our busy towns, especially effecting asthma sufferers and children. There’s quite a furore in the press right now about diesel cars and the dangers of NOx, much of it due to the UK having failed to meet EU standards on air quality in a number of major cities, including London and Glasgow. However, taking figures from the London Assembly Environment Committee as an example, diesel cars aren’t the main culprits. NOx production is attributable like this: 

  • 11% from diesel cars
  • 14% from diesel machinery
  • 16% from gas central heating
  • And in the worst congested areas of the capital, 16% from buses

As well-known and award-winning journalist and motorists’ champion, Quentin Willson tweeted recently: “Don't blame cars for diesel pollution. Buses/Trucks worst.” And, in fact, across the UK, power stations are the biggest cause of NOx pollution.

Brayleys Diesel Cars

So what about that 11% from diesel cars?

It’s certainly worth doing everything we can to bring down NOx emissions from diesel cars and vehicle manufacturers have been working hard to do just that and to stay in line or exceed the increasingly stringent targets brought in by successive governments.

For example, in 1992, the Euro 1 standards came into effect, requiring hydrocarbon and NOx emissions to be less than 0.97g/km. Euro 2, 3, 4, and Euro 5 standards followed with each requiring further reductions in emissions. Euro 6, applied to all new diesel registrations from September 2015, capped NOx emissions at 0.08g/km, a big reduction on the Euro 1 requirement of 0.97g/km. Vehicle manufacturers have responded enthusiastically to these new requirements, developing a variety of innovative technologies to meet legislative requirements and to satisfy the demands of customers for greener cars. Diesel Particulate Filters, Selective Catalytic Reduction and Exhaust Gas Recirculation are just three of the technologies now used by diesel car manufacturers to make diesel such an effective and efficient fuel to choose for powering your car. That means that whilst older diesel cars may not be as good for the environment, new diesel cars are powering ahead in terms of efficiency and pollutant reduction.

To find out more about the benefits of our new diesel cars at Brayleys, please take a look at any of our brands:

Brayleys Diesel Cars

New diesel cars: pioneering environmental advantages

To find out more about the new diesel car models available at Brayleys, please send us a diesel cars enquiry

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