Low-emission vehicles benefit from significantly reduced or zero Vehicle Excise Duty (VED), making them the most cost-effective choice for road tax purposes. With emissions standards constantly improving and the UK committed to net-zero by 2050, understanding which vehicles qualify for low-emission tax benefits — and how those benefits are calculated — has never been more relevant for car buyers. This guide covers the low-emission VED bands, how WLTP has changed the way emissions are measured, and the real-world savings available to low-emission vehicle buyers in 2026.

The CO2 band system explained

VED for cars registered from March 2009 onwards is determined by CO2 emissions at the point of first registration. Emissions are measured in grams of CO2 per kilometre driven (g/km). The bands range from Band A (0-100g/km) at the cheapest end to Band M (226g/km+) at the most expensive. The first-year VED rate is based on the CO2 band, while the annual rate from year two onwards is the same 190 GBP for all standard cars regardless of CO2 band. Understanding which band your vehicle falls into can help you estimate first-year costs accurately.

Band A: the zero-emission band

Band A covers vehicles emitting 0-100g/km CO2 and pays 0 first-year VED. This band includes all pure electric vehicles and some plug-in hybrids with very low combined CO2 emissions. Band A vehicles pay no first-year VED at all — regardless of list price, fuel type, or any other factor. From year two onwards, Band A pure EVs registered from April 2017 still benefit from the five-year zero-annual-VED exemption, meaning they pay nothing for road tax for five full years.

Band B: low-emission conventional cars

Band B covers vehicles emitting 101-110g/km CO2. Band B first-year VED is 20 GBP — only 20 pounds more than Band A. For context, a petrol car in this band might be a very efficient 1.0-litre supermini with CO2 around 105g/km WLTP. Band B is the lowest band for non-plug-in hybrid vehicles, though many modern efficient petrol engines also fall here. Compared to the average new car CO2 of around 140g/km WLTP, a Band B car saves around 120 GBP on first-year VED compared to the median vehicle. Related: Andhra Pradesh Road Tax Calculator 2026 — AP Vehicle Rates | Bangalore Road Tax Calculator 2026 — Karnataka Vehicle Guide | Canada ZEV Rebate 2026 | Chennai Road Tax 2026 — Tamil Nadu Vehicle Calculator.

Band C: efficient petrol engines

Band C (111-120g/km CO2) pays 30 GBP first-year VED. This band captures a wide range of efficient petrol cars — most 1.2 to 1.4 litre petrol superminis and small hatchbacks fall within this band. At 30 GBP, it is still among the cheapest first-year rates available, representing a saving of 100 GBP versus Band D and 160 GBP versus Band F. For buyers prioritising low running costs who cannot or prefer not to go fully electric, a Band C petrol car remains an economical choice.

WLTP vs NEDC: why emissions figures matter

Since September 2018, all new UK car registrations use WLTP (Worldwide Harmonised Light Vehicles Test Procedure) CO2 figures rather than the older NEDC (New European Driving Cycle) standard. WLTP is a more rigorous, more realistic test — it involves higher average speeds, longer test duration, and more dynamic driving patterns. As a result, WLTP CO2 figures are typically 15-25% higher than the equivalent NEDC figures for the same vehicle. This means a car that might have shown 110g/km under NEDC could show 130g/km under WLTP — shifting from Band B to Band D for VED purposes.

Real-world savings from low-emission choices

Choosing a low-emission vehicle can save hundreds or thousands of pounds over ownership. The most significant savings come from pure electric vehicles: a zero-emission car registered from April 2017 saves 190 GBP per year in annual road tax for five years — a total of 950 GBP over the exemption period. Low-emission petrol cars in Band A-C save 0-170 GBP on first-year VED versus Band D, and benefit from the lowest possible annual rates thereafter. These savings stack on top of lower fuel costs, reduced congestion charges in some areas, and exemption from Vehicle Exercise Duty surcharges in London.

Low-emission vehicle quick reference

  • Band A (0-100g/km): 0 first-year VED — includes all pure EVs
  • Band B (101-110g/km): 20 GBP first-year VED
  • Band C (111-120g/km): 30 GBP first-year VED
  • Band D (121-130g/km): 130 GBP first-year VED
  • WLTP figures 15-25% higher than NEDC for same vehicle
  • Pure EV: 0 first-year + 0 annual for 5 years = 950 GBP total saving
  • Plug-in hybrids qualify for Band A-B if CO2 under 50g/km
  • Low-emission cars also benefit from reduced BIK for company car drivers

Disclaimer

CO2 emissions figures and VED band rates are based on UK government policy as of April 2026. Emissions figures may vary between vehicles of the same model depending on specification and test conditions. Always verify exact VED rates at gov.uk/vehicle-tax-rate-tables before purchase. This article does not constitute financial advice.

Official Resources: Vehicle Tax Guide | Car Tax Calculator

Frequently Asked Questions

Q: How is car tax calculated in 2026?
Car tax is calculated based on your vehicle's value, engine capacity, fuel type, emissions, and state or country of registration. Tax rates vary significantly between regions — check your local transport authority website or use an online car tax calculator for an accurate estimate for your specific vehicle.

Q: Can I pay my car tax online?
Yes — most regions allow online road tax payment through their transport department portal. In India, use parivahan.gov.in. In the UK, use gov.uk. In the USA, check your state's DMV website. Have your vehicle registration number and insurance certificate ready for online payments.

Q: What happens if I don't pay car tax?
Driving without valid road tax is illegal in most jurisdictions and can result in fines, vehicle seizure, or number plate clamping. Penalties range from a percentage of the tax owed to fixed daily amounts. Always ensure your vehicle is taxed before driving — even short lapses can accumulate significant penalties.

Q: Are there tax exemptions for electric or hybrid vehicles?
Most countries offer tax benefits for EVs and hybrids including reduced GST/VAT rates, road tax exemptions, and purchase subsidies. In India, EVs attract 5% GST versus 28% for petrol cars. In the UK, EVs are exempt from VED. Check your country's specific EV incentive programs for current rates and eligibility.

Q: Can I claim tax relief on car expenses for business use?
Business vehicle owners can typically claim deductions for fuel, maintenance, insurance, depreciation, and interest on car loans. Methods vary: standard mileage rates, actual expense tracking, or lease deduction. Keep detailed records including mileage logs, receipts, and business purpose documentation for all trips.