Car Tax CO2 Emissions UK 2026: Understanding the CO2 Band

Car tax CO2 emissions UK — CO2 is the primary factor determining how much road tax you pay. Here is everything you need to understand about CO2 and how it determines your Vehicle Excise Duty in 2026.

What Is CO2 and Why Does It Determine Road Tax?

Carbon dioxide (CO2) is the greenhouse gas produced when fuel is burned in an engine. The UK government links road tax to CO2 emissions to incentivise low-polluting vehicles and discourage high-emission choices. The more CO2 your vehicle produces per kilometre, the higher your road tax band.

How to Find Your Vehicle's CO2 Figure

V5C logbook (Section D): Shows the official CO2 figure in g/km
MOT certificate: Lists CO2 for vehicles tested from 2018 onwards
Manufacturer's specification: On the Certificate of Conformity or dealer listing
GOV.UK vehicle enquiry: Enter registration to see CO2

VED Bands by CO2 Emissions (First Year)

0g/km: £0 (pure electric)
1-50g/km: £10 (PHEVs)
76-90g/km: £130
131-150g/km: £600
191-225g/km: £1,565
Over 255g/km: £2,605

Why CO2 Can Vary Between Similar Cars

Two vehicles of the same model and engine can have different CO2 figures due to optional equipment, tyre type, aerodynamic modifications, and test cycle variations. The figure on your specific V5C is the official one that applies — not a general model figure from brochures.

Conclusion

Car tax CO2 emissions UK is the single most important factor in your road tax bill. Find your CO2 in Section D of your V5C. Use our car tax calculator to see your exact VED band. Related: Car Tax CO2 Emissions UK 2026 | Understanding CO2 Emissions UK 2026 | Understanding CO2 Emissions UK 2026 | UK Car Tax Bands 2026.

Official Resources: GOV.UK Check Vehicle Tax | GOV.UK Vehicle Tax | DVLA Online | MOT Check

Road tax and registration rules in India are governed by the Motor Vehicles Act, 1988, and vary significantly from state to state. While the central government sets GST rates, state governments determine road tax — creating a price variation of Rs20,000-80,000 for the same vehicle across different states. Always verify the latest rates with your state RTO before purchasing, as rates are updated annually in most states. Use CarTax.online's state-specific road tax calculator for accurate estimates based on your vehicle's ex-showroom price and category.

Frequently Asked Questions

Q: How much is car tax (VED) in the UK 2026?
Car tax rates in the UK depend on your vehicle's CO2 emissions and list price. Standard rates start from £190 per year for petrol and diesel cars, with zero-rated VED for EVs. First-year rates vary from £0 to £2,605 depending on emissions. Additional premiums apply for vehicles over £40,000.

Q: How do I check if my car is taxed online?
You can check your vehicle's tax status for free on the Gov.uk website at gov.uk/check-vehicle-tax. You'll need your vehicle's registration number (number plate). You can also check via the Motor Insurance Database to verify road tax and insurance status simultaneously.

Q: Can I get a refund on car tax if I sell my vehicle?
Yes — if you sell or scrap your vehicle, you can claim a refund on any full months of remaining road tax. Contact DVLA with the V11 reminder letter or apply online at gov.uk. Refunds are usually processed within 4-6 weeks.

Q: Is road tax refund available when transferring ownership?
No — road tax does not transfer with the vehicle. When you sell your car, the tax is automatically cancelled and any remaining months are refunded to you by DVLA. The new owner must tax the vehicle immediately. As a buyer, always verify the vehicle's tax status before purchasing.

Q: What is the luxury car tax threshold in the UK 2026?
The additional rate for vehicles over £40,000 (list price) adds £410 per year to standard VED rates for years 2-6 of registration. This surcharge brings the annual cost for high-emission vehicles over £40,000 to around £600-690 per year. Pure EVs under £40,000 pay zero VED.

Questions

How is road tax calculated in India?

Road tax in India is calculated based on the vehicle's ex-showroom price, engine capacity, and state-specific rates. Most states charge road tax as a percentage of the vehicle value (typically 2-10%) or at fixed rates based on vehicle category. Some states offer concessions for electric vehicles and hybrid cars. Road tax is a one-time payment for private vehicles in most states.

Is road tax the same across all states in India?

No, road tax varies significantly across Indian states. Each state has its own road tax structure with different rates and calculation methods. For example, Karnataka charges 2% for cars while Maharashtra charges up to 8%. Some states like Delhi have lower road tax rates. Always check your state's specific road tax rates before purchasing a vehicle.

How to pay road tax online?

Road tax can be paid online through the Parivahan portal, state transport department websites, or VAHAN portal. Select 'Tax Payment' service, enter vehicle registration number, calculate applicable tax, make online payment, and download the receipt. For interstate purchases, road tax is paid at the time of registration in the new state.

What happens if road tax is not paid?

Failure to pay road tax can result in penalties, vehicle seizure, and fines during traffic checks. Road tax default may also affect vehicle insurance validity and renewal. Some states impose ongoing annual tax for commercial vehicles. Always carry proof of road tax payment while driving.

Can road tax be claimed back when selling a vehicle?

In most Indian states, road tax is non-refundable upon vehicle sale. The tax is considered paid for the remaining validity period but cannot be claimed back. Some states allow refund of unused road tax period when transferring registration to another state. Check with your state's transport department for refund policies.