Regan Brown
If you're wondering whether your car is considered low-emitting, there are several ways to find out. You can check your vehicle's emissions rating in its dedicated V5C registration certificate, or logbook, or look up details for emissions and fuel consumption for used and new vehicles on the Government's Vehicle Certification Agency website. Low-emitting vehicles are also defined as those classified as Zero Emission Vehicles (ZEV) by the California Air Resources Board. Examples of low-emitting vehicles include the 2008 compact Honda Civic Hybrid, the midsize Nissan Altima, and the 2026 Volvo ES90. There are also ways to reduce your car's emissions, such as removing harmful contaminants from your vehicle's fuel system and engine, and correcting low tyre pressure to enhance fuel economy.
Characteristics and values of low-emitting fuel vehicles
| Characteristics | Values |
|---|---|
| Definition | Vehicles that are classified as Zero Emission Vehicles (ZEV) by the California Air Resources Board |
| Examples | Battery-powered RAV4 EV from Toyota, the EV1 from General Motors, the Honda Civic Hybrid, the Nissan Altima, Toyota Camry and Prius hybrids |
| Fuel economy | Improved by correcting tyre pressure and changing engine oil |
| Emissions rating | Can be found in the vehicle's V5C registration certificate or on the Government's Vehicle Certification Agency website |
| Scale | Ranked on a scale from "extremely high" to "extremely low" |
| Environmental impact | Reduced CO2 emissions benefit the environment and deliver enhanced performance and fuel savings |
| Historical context | Government regulations in the 1960s controlled automotive emissions, and engineering developments have since reduced emissions significantly |
| Standards | Tier 2 standards set by the Environmental Protection Agency (EPA) |
| Fuel type | Electric, hydrogen-fuel-cell, or hybrid-electric vehicles |
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What You'll Learn
- Low-emission cars produce less nitrous oxide and carbon dioxide
- Fully electric cars produce zero emissions
- The government's Vehicle Certification Agency website provides emissions and fuel consumption data
- Tyre pressure and engine oil changes can enhance fuel economy
- Zero-Emissions Vehicles (ZEVs) have zero harmful tailpipe emissions
Low-emission cars produce less nitrous oxide and carbon dioxide
Nitrogen oxide is a harmful byproduct of combustion, which occurs when cars burn fuel and oxygen, producing carbon dioxide and water. While nitrogen oxide emissions are typically associated with diesel engines, petrol engines also produce this pollutant. The production of nitrogen oxide is increased when more oxygen is present, as this results in a higher volume of fuel combustion. Turbochargers, for example, act as a form of 'forced induction', pushing more air into oxygen cylinders, which in turn increases the volume of fuel combustion and, subsequently, the power of the engine.
To reduce emissions, car manufacturers have been developing new technologies. For instance, the three-way catalytic converter and computer-controlled electronic fuel injection have reduced automotive emissions to less than five per cent of what they were 40 years ago. Electric vehicles, which have a battery instead of a fuel tank and an electric motor instead of an internal combustion engine, produce zero tailpipe emissions. Hydrogen fuel cell vehicles, which are still being developed, will only emit water vapour.
If you want to check if your car is low-emission, you can find its emissions rating listed in its dedicated V5C registration certificate, sometimes called a logbook. Alternatively, you can find details for emissions and fuel consumption for both used and new vehicles on the Government's Vehicle Certification Agency website.
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Fully electric cars produce zero emissions
Electric cars are considered low-emitting vehicles. Fully electric cars produce zero direct emissions from the tailpipe, which means they emit no harmful gases through the exhaust pipe. This is in contrast to traditional combustion engines, which expel unburned hydrocarbons, particulates, and other by-products of burned fuel into the atmosphere.
While electric vehicles (EVs) have zero tailpipe emissions, it is important to consider the emissions associated with generating the electricity used to power them. The emissions from electricity generation will depend on the energy sources used. For example, coal and natural gas power plants emit carbon pollution, whereas renewable sources like wind and solar power do not. In areas with relatively low-polluting energy sources, electric vehicles typically have a significant life cycle emissions advantage over conventional gasoline or diesel vehicles. However, in areas with higher-emissions electricity, the life cycle benefits of electric vehicles may be reduced.
It is worth noting that some studies have shown that the manufacturing process of an electric vehicle can create more carbon pollution than that of a gasoline car due to the additional energy required to produce an EV battery. However, over the lifetime of the vehicle, the total greenhouse gas emissions associated with an EV are typically lower than those of a gasoline car. This is because EVs are more energy-efficient, using approximately 87-91% of the energy from the battery for propulsion, compared to 16-25% for gasoline vehicles.
To further reduce the environmental impact of your car, you can take it to an eco-friendly garage that specializes in increasing fuel efficiency and reducing negative emissions. Some ways to do this include maintaining correct tyre pressure, using the correct engine oil, and ensuring regular removal of harmful contaminants from the fuel system and engine. These measures will not only benefit the environment but also improve your vehicle's performance and save you money on fuel.
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The government's Vehicle Certification Agency website provides emissions and fuel consumption data
The government's Vehicle Certification Agency (VCA) website provides a wealth of information on emissions and fuel consumption data for vehicles. The VCA has developed databases that list most cars and new vans available for sale in the UK, including their fuel consumption, CO2 emissions, and other tailpipe emissions performance figures. This information is particularly useful for those looking to purchase a new car or simply wanting to understand the environmental impact of their current vehicle.
The VCA's databases cover a range of fuel types, including petrol, diesel, and alternative fuels such as Liquefied Petroleum Gas (LPG) and Compressed Natural Gas (CNG). It also includes data on hybrid and electric vehicles, which are becoming increasingly popular due to their reduced environmental impact. The website provides a comprehensive guide to emissions and fuel consumption, with data provided directly by manufacturers and subject to checks before publication.
One important aspect of the VCA's work is the Worldwide Harmonised Light Vehicle Test Procedure (WLTP). This official test provides more representative information on fuel economy, CO2 emissions, and other air pollutant emissions. The WLTP replaced the NEDC test procedure in 2017 and has become the mandatory standard for establishing the official fuel consumption and emissions of new cars.
In addition to the WLTP, the VCA also adheres to the EU Euro emissions standards under the vehicle "type approval" process. This ensures that emissions of main air pollutants are regulated and helps contribute to the overall goal of reducing the environmental impact of motor vehicles. The VCA is committed to making its tools and data accessible to a wide range of users, regardless of disability or technological capabilities.
The VCA website also provides information on vehicle tax tools, which are linked to CO2 emissions. While the data provided by the VCA is informative, it is essential to note that when determining tax on first registration, it is the CO2 figure shown on the registration certificate (V5C) that is used to calculate the tax payable. Overall, the government's Vehicle Certification Agency website is a valuable resource for anyone seeking detailed information on vehicle emissions and fuel consumption data.
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Tyre pressure and engine oil changes can enhance fuel economy
A low-emission car is one that does not emit as much nitrous oxide (NOx) and carbon dioxide (CO2) pollution from its tailpipe as other models. Electric cars, for instance, produce zero emissions. While hybrid-electric vehicles are typically almost seamless in operation and are 98% cleaner than the average new model-year vehicle.
To ensure your car is considered low-emission, it is important to maintain regular tyre pressure and engine oil changes. Tyre pressure influences the fuel economy of your car. The air pressure in your tyres supports the entire weight of your car. Low tyre pressure can cause the vehicle's engine to work much harder, increasing rolling resistance and leading to higher fuel consumption. Underinflated tyres can also increase the risk of tyre failure, as they cause more surface area to be in contact with the road, increasing friction and wear. Therefore, it is essential to regularly check your tyre pressure and ensure they are inflated to the recommended levels specified by the manufacturer.
Similarly, regular oil changes are crucial for maintaining your vehicle's fuel efficiency. Over time, engine oil accumulates dirt and debris, which can increase friction and wear on the engine parts, making the engine work harder and burn more fuel. The incorrect viscosity of oil can also adversely affect fuel economy. Oil that is too thick can increase drag on moving components, while oil that is too thin may not provide enough friction reduction, leading to less efficient engine operation and poorer gas mileage. By following the manufacturer's recommendations for oil change intervals and using the right type and viscosity of oil, you can enhance your car's fuel economy and extend the life of its engine.
Overall, by maintaining proper tyre pressure and performing regular engine oil changes, you can improve your vehicle's fuel efficiency, reduce emissions, and enjoy savings on fuel costs. These simple maintenance practices can help your car run more smoothly and efficiently while also benefiting the environment.
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Zero-Emissions Vehicles (ZEVs) have zero harmful tailpipe emissions
Zero-Emissions Vehicles (ZEVs) are cars that produce zero harmful tailpipe emissions. They are typically electric cars and hydrogen fuel cell cars that produce no tailpipe emissions and significantly reduce air pollution and greenhouse gas emissions. ZEVs are included in the Low Emission Vehicle (LEV) category and are 98% cleaner than the average new model-year vehicle.
ZEVs can be Battery Electric Vehicles (BEVs) or Fuel Cell Vehicles (FCVs). BEVs are powered by electricity stored in a battery and are recharged by plugging into an electric power source. FCVs, on the other hand, use hydrogen as their fuel to power the electric motor. The by-product of FCVs is water vapour and warm air only, with no tailpipe emissions.
The term "Zero-Emission Vehicle" was coined by the California Air Resources Board (CARB) in 1990, specifically referring to cars and trucks. However, in a broader sense, a ZEV can include any form of transport that produces zero operating emissions, such as electric motorcycles, bicycles, kick scooters, and other personal mobility devices.
While ZEVs offer significant environmental benefits, it is important to consider the source of electricity used to recharge their batteries. If ZEVs are recharged from electricity generated by fossil fuel plants, they cannot be considered truly zero-emission vehicles. A well-to-wheel life cycle assessment is necessary to understand the full emissions implications of operating a ZEV.
To determine if your car is considered a low-emitting fuel vehicle, you can refer to the Government's Vehicle Certification Agency website or locate the emissions rating in your vehicle's V5C registration certificate.
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Frequently asked questions
You can find your vehicle's emissions rating listed in its dedicated V5C registration certificate, or logbook. Alternatively, you can find details for emissions and fuel consumption for both used and new vehicles on the Government’s Vehicle Certification Agency website.
A low-emitting vehicle is defined as a vehicle that is classified as a Zero-Emissions Vehicle (ZEV) by the California Air Resources Board. This means that the vehicle produces zero harmful tailpipe emissions.
You can reduce the CO2 emissions your car produces by removing any harmful contaminants that have collected inside your vehicle’s fuel system and engine over time. You can also enhance your car’s fuel economy by correcting low tyre pressures and changing your old oil for a fresh supply.
