Diesel or fuel cars? How to choose.

Even Though gas cars are more popular than diesel in the U.S., diesel engines have nearly half the market share in Europe. It’s important to remember that some types of diesel fuel can have a negative impact on vehicle performance. These include black diesel, biodiesel, and other enhanced diesel products. when choosing, it is also important to understand petrol vs diesel engine pros and cons, and petrol vs diesel car maintenance when buying your car.

Diesel or fuel cars? How to choose.

While buying a car, one of the key decisions one has to make is to decide between a Petrol & Diesel vehicle. While there is no simple answer for this debate, the following points can help you reach a decision:

  • Cost of Petrol Vs Diesel Car

  • The diesel variant of cars cost more than the petrol variant. For cars which cost less than 10 Lakhs, the showroom price between diesel and petrol variants differs from 1 to 1.5 Lakhs. The difference in the on-road price of petrol and diesel car variants will be even more. This is because the cost of registration for the diesel car is more than that of the Petrol car; the difference is about 1 to 3% depending on the cost of the vehicle and the State where it is purchased.
  • Petrol vs Diesel Mileage

  • The mileage of the diesel engine is more than that of a Petrol engine. A diesel engine does not need a spark plug and thus has higher compression. This makes the diesel engine utilise more fuel as compared to a petrol engine. The better mileage of a diesel engine makes it easy to cover the extra cost of the car paid initially, but with increasing cost of cars, the time required to recover this cost has increased.
  • Petrol vs Diesel Price

Since last one year, the prices of diesel and petrol have seen a big hike in India. In 2017, diesel price was 55.94 Rs. per litre which is now touching 74 Rs per litre. Whereas the petrol was at Rs. 66.91 which is now 82.16 Rs. per litre. The above statistics show that the difference between both is reducing day by day, as last year the difference in both was 11 Rs per litre, but now after one year, in 2018, the cost of diesel is just Rs. 8 less than that of petrol per litre and is further decreasing day by day. If this situation continues, soon we will see that there will be no price difference between Petrol and Diesel in the forthcoming years.

 

  • Smooth Drive

Apart from a fact that diesel engines are more powerful than petrol engines, they also have a higher torque and hence they give a smoother drive. On the other hand, the harshness, noise, and vibrations in diesel driven cars are way higher than that of a petrol-driven car which is a big reason of concern. In petrol engines the power developed is low due to compression ratio whereas in diesel engines, the power is more.

  • petrol vs diesel car maintenance Cost 

The maintenance cost of diesel cars is higher than petrol cars. This is because consumables like engine oil and spares used in diesel vehicles are more expensive.  The resale value of a used diesel car is higher than that of a petrol car. However, the life of a petrol engine is more than a diesel engine.So now that you have the pros and cons of both these vehicles, hope you can choose the one that suits your requirements better.

Whichever vehicle you choose, make sure that you are carrying all the documents including your Car Insurance. To avoid confusion while buying a car insurance, compare car insurance policies online before making a choice. You can check car insurance quotes online

From a financial perspective, there’s now less and less difference between a petrol and a diesel car.

It is still true that if you look at pure fuel running costs, a diesel will cost less. You will, though, have to have high annual mileages and use motorways frequently to get the financial benefits.

This is because newer diesel vehicles now have higher tax, which can cost almost as much as the fuel savings you could make in a year, and there are also concerns over air pollution caused by diesels. Take a look at the car tax prices to see if the vehicle you have in mind could be affected.

Need to knowThe sale of new diesel and petrol cars will be banned in 2035. That means in the coming years, there will be a significant change in the types of vehicles we’ll be driving, how much traditional cars are worth, and even financial encouragement to buy alternative fuel vehicles like electric cars.

It’s also true that a diesel vehicle will typically cost more than the equivalent petrol car. Diesel fuel also costs more than petrol.

So you’ll need to work out if this saving in fuel consumption will offset the extra expense of a diesel car and its running costs.

For example, if you drive a diesel car more than 12,000 miles a year, you might recoup £1,000 in a couple of years.

But if your mileage is around 6,000 miles a year it could take you about four years to recoup the same amount.

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Remember

Research from Which? shows that for new diesels it can take between six and 11 years to recoup the extra cost of a diesel over a petrol car.

With the new rules around taxes on diesels, and some cities such as London due to increases in charges to penalise diesels, resell values of diesels is also expected to be lower, especially if you might change cars in the next five years.

That means that if most of your journeys are local and your mileage is lower, a small petrol car might be more suitable for you, especially if you’re looking to change vehicles in the next five years.

Also, keep in mind that newer diesels have a special filter fitted to help prevent pollution. It’s called a diesel particulate filter (DPF). These can clog if the vehicle isn’t used regularly on a motorway, and is costly to fix or replace. This means if you don’t use motorways often, a diesel might not be for you.

Petrol versus diesel cars

 

Pros of diesel

  • Financial: diesel engines are more efficient and use 15−20% less fuel meaning cheaper running costs. The cars historically have tended to have a slightly higher resale value too, but this is changing with time.
  • Environmental: lower CO2 emissions means that diesels from before April 2017 get a lower tax band than petrol engine cars. For newer diesel cars though, tax is typically higher than for petrol.
  • Driving experience: diesel cars offer more low-speed torque which means they have better overtaking power and towing ability.

Cons of diesel

  • Financial: diesel cars usually cost more than petrol. Diesel fuel is more expensive than petrol and servicing or fixing a serious problem on a diesel car might be slightly more expensive. New diesel cars also cost more to tax than petrol cars, and depreciation is now slightly higher. There are a number of new charges, such as the London T-Charge and Ultra Low Emissions Zone, that will make it more expensive to drive some diesels in certain cities.
  • Environmental: despite lower CO2 emissions, diesel fuel produces tiny particles linked to breathing disorders such as asthma.
  • Driving experience: diesel engines tend to be slightly noisier, but this problem is improving.

Pros of petrol

  • Financial: petrol is cheaper than diesel fuel and the cars tend to be slightly cheaper to buy and service.
  • Environmental: While CO2 emissions are higher than diesel, petrol cars produce less of some other dangerous emissions like nitrogen.
  • Driving experience: petrol engines tend to be less noisy.

Cons of petrol

  • Financial: engines are less efficient and use more fuel than diesel.
  • Environmental: petrol engines emit more CO2 than diesel cars.
  • Driving experience: Petrol engines need the driver to change gear more regularly, for example when overtaking, to make the most of the engine’s power – but some people will actually prefer this style of driving.

Choosing between petrol and diesel power

Choosing petrol or diesel power is one of the first decisions you’ll have to make before buying a new car. What’s going to be best for your type of motoring, for the environment and your wallet? Here you can get the facts to help you decide and tips for cutting your fuel costs.

  • Which is better based on your motoring needs
  • Petrol versus diesel cars
  • Find the cheapest fuel
  • Alternatives to petrol and diesel
  • Your next step

Which is better based on your motoring needs

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Did you know?

The average motorist will spend more than £100,000 on fuel over their lifetime − petrol and diesel being the biggest motoring expense of all.

Source: MoneySupermarket.com

From a financial perspective, there’s now less and less difference between a petrol and a diesel car.

It is still true that if you look at pure fuel running costs, a diesel will cost less. You will, though, have to have high annual mileages and use motorways frequently to get the financial benefits.

This is because newer diesel vehicles now have higher tax, which can cost almost as much as the fuel savings you could make in a year, and there are also concerns over air pollution caused by diesels. Take a look at the car tax prices to see if the vehicle you have in mind could be affected. ?

Need to know

The sale of new diesel and petrol cars will be banned in 2035. That means in the coming years, there will be a significant change in the types of vehicles we’ll be driving, how much traditional cars are worth, and even financial encouragement to buy alternative fuel vehicles like electric cars.

It’s also true that a diesel vehicle will typically cost more than the equivalent petrol car. Diesel fuel also costs more than petrol.

So you’ll need to work out if this saving in fuel consumption will offset the extra expense of a diesel car and its running costs.

For example, if you drive a diesel car more than 12,000 miles a year, you might recoup £1,000 in a couple of years.

But if your mileage is around 6,000 miles a year it could take you about four years to recoup the same amount. ?

Remember

Research from Which? shows that for new diesels it can take between six and 11 years to recoup the extra cost of a diesel over a petrol car.

With the new rules around taxes on diesels, and some cities such as London due to increases in charges to penalise diesels, resell values of diesels is also expected to be lower, especially if you might change cars in the next five years.

That means that if most of your journeys are local and your mileage is lower, a small petrol car might be more suitable for you, especially if you’re looking to change vehicles in the next five years.

Also, keep in mind that newer diesels have a special filter fitted to help prevent pollution. It’s called a diesel particulate filter (DPF). These can clog if the vehicle isn’t used regularly on a motorway, and is costly to fix or replace. This means if you don’t use motorways often, a diesel might not be for you.

Compare diesel and petrol car running costs at the Which? Car website.

Petrol versus diesel cars

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Top tip

To find out how much your car costs to run, try our Car costs calculator tool.

There used to be a negative perception that diesel cars were slower, smellier, noisier and more expensive than petrol cars. Diesels have closed the gap significantly in these categories.

There are, though, still some large differences in the characteristics of cars using the different fuels that make them suitable for different uses.

Take a look at the pros and cons of each below.

Pros of diesel

  • Financial: diesel engines are more efficient and use 15−20% less fuel meaning cheaper running costs. The cars historically have tended to have a slightly higher resale value too, but this is changing with time.
  • Environmental: lower CO2 emissions means that diesels from before April 2017 get a lower tax band than petrol engine cars. For newer diesel cars though, tax is typically higher than for petrol.
  • Driving experience: diesel cars offer more low-speed torque which means they have better overtaking power and towing ability.

Cons of diesel

  • Financial: diesel cars usually cost more than petrol. Diesel fuel is more expensive than petrol and servicing or fixing a serious problem on a diesel car might be slightly more expensive. New diesel cars also cost more to tax than petrol cars, and depreciation is now slightly higher. There are a number of new charges, such as the London T-Charge and Ultra Low Emissions Zone, that will make it more expensive to drive some diesels in certain cities.
  • Environmental: despite lower CO2 emissions, diesel fuel produces tiny particles linked to breathing disorders such as asthma.
  • Driving experience: diesel engines tend to be slightly noisier, but this problem is improving.

Pros of petrol

  • Financial: petrol is cheaper than diesel fuel and the cars tend to be slightly cheaper to buy and service.
  • Environmental: While CO2 emissions are higher than diesel, petrol cars produce less of some other dangerous emissions like nitrogen.
  • Driving experience: petrol engines tend to be less noisy.

Cons of petrol

  • Financial: engines are less efficient and use more fuel than diesel.
  • Environmental: petrol engines emit more CO2 than diesel cars.
  • Driving experience: Petrol engines need the driver to change gear more regularly, for example when overtaking, to make the most of the engine’s power – but some people will actually prefer this style of driving.

Find the cheapest fuel

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Did you know?

In 1989, the average cost of unleaded petrol was 38.5p per litre and diesel 36.1p per litre. By 2018 the cost per litre was 121.7p and 124.4p respectively.

The simplest way to cut the cost of everyday motoring is to buy your petrol or diesel from the cheapest service station in your area.

Visit Petrolprices.com to compare the fuel prices at forecourts in any postcode.

You can also calculate your annual fuel bill and sign up for an email alert to keep up to date with the latest fuel prices in your area. ?

Top tip

Supermarkets often run petrol promotions offering discounts of 5p-10p off each litre of fuel if you spend a certain amount (for example £30) shopping in-store.

You get a voucher to use at the supermarket’s service stations.

You might find supermarkets in your area offer a good price on fuel, but be careful not to add miles to your journey just to save a penny a litre.

However, paying an extra few pence per litre at your closest forecourt can add pounds to your final bill.

So, weigh things up carefully when looking at cheapest versus nearest. Find out the true cost of your car journeys at the fuel-economy.co.uk website. Find out how to reduce your transport costs and lower your carbon footprint on the Energy Saving Trust websiteopens in new window.

Alternatives to petrol and diesel

Technological advances are beginning to make alternative energy vehicles a realistic alternative to petrol and diesel ones.

With hybrid, electric, hydrogen fuel cell and LPG powered vehicles, there’s more choice than ever, some opportunities to save money, and there are of course significant environmental advantages to using these kind of vehicles.

Should I buy a diesel, petrol or hybrid car in 2020? Our expert guide reveals whether diesel really is still the cheaper, wiser choice.

Diesel cars have long been favoured by the frugal motorist, thanks to superior fuel economy. Diesel owners also used to pay less car tax.

But new diesel cars no longer benefit from low car tax. Plus concern over air pollution from diesel cars is driving new legislation, residual values are set to decrease, and petrol and hybrid cars are becoming more fuel efficient. So is diesel still the fuel of choice?

Here, we tell you whether diesels are really still economical, tell you what you need to know about diesel cars and pollution, and reveal which hybrids give diesels a run for their money when it comes to motorway fuel economy.

Take a look at our expert pick of the best cars to find out which models should be on your shortlist. 

Diesel cars vs petrol vs hybrid: in a nutshell

  • Diesel cars tend to cost more to buy than an equivalent petrol car. In the past, it was possible to make this back thanks to diesel cars having lower car tax and fuel costs.
  • Amendments to the car tax system means diesel owners pay more in the first year, and all drivers pay a flat rate from the second year on. So the only savings now come from fuel economy.
  • Hybrid cars tend to be fuel efficient around town, but become comparatively expensive to run on the motorway. But, thanks to technology evolving, there are now some hybrids that buck this trend.
  • Diesel cars are in the limelight for their toxic emissions. But our tests have uncovered some diesel cars that emit less NOx than the average petrol car.
  • New MOT rules say if you have a diesel car with a diesel particulate filter (DPF), and there is visible smoke coming from your exhaust, or they find evidence of DPF tampering, you will fail your MOT.
  • If you have to replace your DPF, it’ll be a costly fix.
  • Diesel cars tend to be the fuel of choice for those who need to tow, thanks to diesel engines producing huge amounts of torque (pulling power). But petrol and hybrid alternatives are available.

Still not sure if you should choose petrol, diesel or hybrid? Keep reading to find out.

Which? ignores manufacturers’ fuel-economy claims and publishes more realistic mpg figures from our own tests. Discover the cars we recommend by viewing our round-up of the best cars.

Diesel vs petrol vs hybrid fuel economy 

Diesel cars have been known for having better fuel economy – and for good reason. In our tests, diesel trumps its petrol counterpart for fuel economy on both the motorway and around town.

Diesel might cost more per litre at the pump, but currently a diesel car’s fuel costs will be cheaper than the equivalent petrol car.

Average fuel economy figures
Fuel typeAverage mpg (combined)Average mpg (around town)Average mpg (motorway)
Diesel53.849.745.2
Petrol44.938.638.1
Petrol-hybrid50.692.437.3
Table notes
1 All results from Which? independent tested, cars tested between 2012-2016. Figures will be updated with the 2017 onwards test programme once we have enough to provide averages.
2 Numbers tested: 222 diesel engines, 174 petrol engines, 20 petrol hybrids

Our unique Which? tests show that, on average, diesel cars are more efficient than petrol by about 9mpg.  That doesn’t sound much, but can save you close to £200 a year.9,700The average mileage as revealed by the 2018 Which? Car Survey.

Hybrid cars, however, are quickly catching up. Unbeatable fuel economy around town has always been the hybrid’s forte. But, compared with diesel, the hybrid car’s weakness has always been its poor fuel economy on the motorway.

But in our most recent tests, we have discovered two hybrid cars with a motorway fuel economy as good as most diesels.

Hybrid cars with excellent motorway fuel economy

CarsFuel economy (combined)Fuel economy (around town)Fuel economy (motorway)
68.972.452.3
67.678.549.6
Table notes
1 Results from the current (2017 onwards) test programme. For more on how we measure fuel economy from cars, see how we test mpg and emissions.

Key

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As hybrid technology evolves, we expect more cars to follow suit – with improved overall and motorway fuel economy. If this happens, there will be ever-diminishing reasons to buy a diesel car.

You can use our independent fuel economy figures from our car reviews, in conjunction with our fuel calculator below, to work out how much a car will cost to fuel over a year.

Fuel-cost calculator: how much will you pay?

You can use our simple fuel-cost calculator, below, to easily work out the fuel costs between two cars. Enter the respective fuel-economy figures for the cars and your mileage to see the difference. 

For the most accurate results, don’t use the manufacturers’ claimed figures. Instead, use our realistic mpg data from the ‘Tech specs’ part of our independent, expert car reviews.

Current fuel prices can be looked up on sites such as TheAA.com or PetrolPrices.com.

Diesel vs petrol vs hybrid car tax

How much car tax you pay depends on when the car you have was registered to its first owner. The car then stays on that tax system through subsequent re-sales.

Before April 2017

All tax rates based on official CO2 emissions. Any car that produces less than 100g/km of CO2 was exempt from car tax. Diesel and hybrid cars, in general, produce low amounts of CO2 compared with petrol. So diesel and hybrid cars were generally cheaper to tax, if not tax free

1 April 2017 onwards

Only the first year’s payment is based on CO2 emissions. From the second year of ownership onwards, owners pay a standard rate of £140 per year, or £130 for a hybrid car. Only zero emission cars that cost under £40,000 are exempt from car tax.

1 April 2018 onwards

Unless diesel cars meet Euro 6d (see how we test mpg and emissions), diesel cars are charged a higher rate in their first year.

What these car tax changes mean to you

The changes from April 2017/2018 onwards mean a large portion of the savings offered by more frugal diesel engines have now been swallowed by the change in car-tax rates.

For example, under the old system, if you owned a diesel Ford Focus you would pay nothing in car tax for the first year. Then just £20 a year. If your car’s CO2 levels were under 100g/km, like the diesel Nissan Qashqai, you would have been exempt from car tax completely. 

Now owners of the same cars have to pay between £120 and £140 in the first year, and £140 a year afterwards. That’s an increase of £120-£140 a year over the older rules.

However, the changes in car tax rates have not been backdated. So if you own a diesel/low CO2 car that was registered to its first owner before April 2017, it will continue to be charged at low CO2.

For current rates and more information on how car tax has changed, see our guide to car tax explained.

Diesel vs petrol: which is cheapest?

Taking purchase cost, first-year tax rate and fuel economy into account, it’s possible to work out which fuel version will be better in the long run. 

To show you, we’ve taken a petrol and diesel version of four popular cars sold in the UK: the Ford Kuga, Nissan Qashqai, Mercedes C-Class and Volkswagen Golf.

Largely thanks to the change in the car tax system, only one diesel version of these becomes cheaper after the first five years of ownership – the Ford Kuga. 

Petrol vs diesel: premiums and running costs

Fuel type and carPrice as newClaimed mpg (and 9,700 miles fuel cost)Total one-year costTotal five-year cost
Diesel Ford Kuga (2.0TDCI 150hp FWD Manual)£28,515
Includes first year car tax (£830)
47.9 mpg
(£1,212)
£29,727£35,137
Petrol Ford Kuga
(1.5T Ecoboost 150hp FWD Manual)
£26,775
Includes first year car tax (£830)
35.8 mpg
(£1,587)
£28,361£35,268
Diesel Nissan Qashqai
(1.5 dCI 110hp FWD manual)
£23,455
Includes first year car tax (£145)
74.3 mpg
(£782)
£24,237£27,923
Petrol Nissan Qashqai
(1.2 DIG-T 115hp FWD manual)
£21,685
Includes first year car tax (£165)
50.4 mpg
(£1,127)
£22,812£27,879
Diesel Mercedes C-Class
(C220d 170hp SE automatic)
£33,125
Includes first year car tax (£205)
64.2 mpg
(£905)
£34,029£38,208
Petrol Mercedes C-Class
(C200 184hp SE automatic)
£30,635
Includes first year car tax (£165)
50.4 mpg
(£1,127)
£31,762£36,230
Diesel VW Golf
(1.6 TDI manual 3dr 115hp SE)
£21,150
Includes first year car tax (£165)
68.9 mpg
(£843)
£21,993£25,925
Petrol VW Golf
(1.0 TSI manual 3dr 110PS SE)
£19,325
Includes first year car tax (£145)
58.9 mpg
(£964)
£20,289£24,707
Table notes Price as new is the manufacturers OTR (On The Road) price, and includes the first year of car tax, shown separately. Five year cost based on driving 9,700 miles per annum, the standard car tax rate of £140 per year, plus the initial car cost. Excludes maintenance costs. All cars have a manual transmission, have a five-door body and are all front-wheel drive. Claimed fuel economy is used as we do not have Which? tested figures for all of the specific engine variants in the table. Prices correct as of July 2018. Petrol price used: 128.8p per litre, diesel price used: 131.7p per litre.

How long do I need to own a diesel car for it to work out cheaper than petrol?

The VW Golf would take an incredible 16 years to become cheaper than the petrol version.

  • The diesel Ford Kuga becomes cheaper than the petrol after five years
  • The diesel Nissan Qashqai becomes cheaper than the petrol after six years
  • The diesel Mercedes C-Class becomes cheaper than the petrol after 12 years
  • The diesel Volkswagen Golf becomes cheaper than the petrol after 16 years

Is diesel dirtier than petrol?

Typically, yes. Diesel cars, on average, produce a lot more NOx than petrol cars.

NOx (oxides of nitrogen), is comprised of NO (Nitrogen Oxide) and NO2 (Nitrogen Dioxide). NOx is harmful and has been linked to tens of thousands of premature deaths around the world.

It comes out of all cars with a combustion engine (so diesel, petrol and hybrid cars). But in our latest tests, despite diesel becoming generally cleaner in recent years, diesel engines still produce an average of 11.5 times the amount of NOx compared with petrol cars.

However, our tests have found a diesel car that actually produces less NOx than the average petrol car, in  our tests. 

For more on the cleanest and dirtiest diesel cars, see our guide to the cars that produce the most and least NOx.

Are petrol and hybrid cars clean?

Not necessarily. They might not produce a large amount of NOx, but with petrol, comes the potential of high CO (carbon monoxide) emissions.

Just like diesel cars, we penalise petrol cars that produce excessive amounts of CO. 

Here’s our guide to the cars that produce the most and least CO in our tests. 

Diesel particulate filter (DPF)

One ongoing issue for diesel cars is the diesel particulate filter (DPF), which can get clogged. The filter cuts down on harmful particulate emissions from diesel engines being released into the air, but there are many reported cases of these becoming clogged and needing replacement.

Most owners’ handbooks advise running the engine at high speed, for example on a motorway run, to keep the filter clear to avoid this.

New MOT rules say that any car with a DPF that emits visible smoke, or has found evidence of DPF tampering, will fail their MOT. If your DPF does need replacing, the cost can run into thousands of pounds.

Our annual survey data shows that diesel-powered cars are slightly less reliable than petrol ones.

Petrol cars are also starting to get particulate filters, though they are currently nowhere near as common.

Want to know which cars you can trust? We reveal which are the most and least reliable car brands.

Will diesel cars be banned?

Yes. Sales of new diesels will be banned along with sales of new petrol and hybrid cars as of 2035. This was announced in February 2020, bringing forward the ban on sales of new petrol/diesel cars from 2040, and adding hybrids to the chopping block.

The government’s plan requires local councils to reduce vehicle emissions in their area, using a range of measures such as:

  • Changing road layouts at congestion and air pollution pinch points
  • Encouraging people to buy electric vehicles
  • Retro-fitting buses to give lower emissions
  • Investing in new low-emission buses
  • Encouraging the use of public transport.

If these measures fail, local authorities could introduce restrictions, such as charging zones, or stopping certain cars from using designated roads at set times.

However, the plan also states that these restrictions should be removed in the event that emission levels fall enough to be legally compliant and ‘there is no risk of legal limits being breached again’.

A £255m fund has been set up to help local councils execute their emissions-reduction plans, with £40m being made available immediately.

Several cities around the world have committed to banning diesel cars by 2025.

London Ultra Low Emission Zone and T-Charge

The Ultra Low Emissions Zone (ULEZ) came into force in April 2019. The ULEZ charge affects:

  • Owners of petrol cars that don’t meet Euro 4 or better
  • Diesel cars will have to meet Euro 6 (introduced September 2015, mandatory for all new cars as of September 2016, though some cars will have been Euro 6 compliant earlier) to escape this extra charge. 
  • Drivers of older cars that aren’t compliant have to pay £24 to enter the ULEZ – that’s made up of a £12.50 ULEZ charge, plus the £11.50 congestion zone charge.

The ULEZ replaced the T-Charge, introduced in October 2017. The T-Charge meant that any car – petrol, diesel, hybrid or otherwise – that didn’t meet Euro 4 emission laws (introduced Jan 2005, mandatory for all new cars as of Jan 2006, though some may have complied earlier than this) had to pay an extra £10 a day on top of the regular charge (£11.50) to come into the congestion charge zone. 

More clean air zones on the way

Following on from the government’s UK Air Quality plan, several cities around the UK are investigating and setting up cleaner air zones. Many target all combustion vehicles, not just diesel cars.

Oxford has gone one step further and proposed a Zero Emission Zone. The plan would phase out diesel and petrol cars entirely, starting with non-zero emission taxis, cars, light commercial vehicles and buses banned by 2020 from certain roads, and all non-zero emission vehicles across the city centre by 2035.

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