Cheapest Cars to Tax in the UK (2026): Complete Guide

Road tax, officially called Vehicle Excise Duty (VED), is one of the unavoidable costs of car ownership. Yet many drivers pay far more than they need to, simply because they did not check the tax band before buying. The difference between the cheapest and most expensive cars to tax can exceed £500 per year, and over a five-year ownership period that adds up to a significant sum. This guide breaks down exactly how UK road tax works in 2026, which cars qualify for zero or low VED, and how to use tax costs as part of your buying decision.

The UK road tax system splits into two main regimes depending on when your car was first registered.

Cars registered before 1 April 2017: These are taxed purely on CO2 emissions. If your car produces 0 g/km of CO2 (i.e. it is fully electric), you pay nothing. Cars emitting 1 to 100 g/km pay between £0 and £20 per year. The bands then climb steeply: a car producing 131 to 150 g/km costs £190 per year, while anything above 255 g/km is charged £735 per year. This system rewards genuinely low-emission vehicles and means that many older hybrids and efficient small cars are extremely cheap to tax.

Cars registered on or after 1 April 2017: First-year tax is still based on CO2 emissions, but from year two onwards, most cars pay a flat standard rate of £190 per year. The only exceptions are zero-emission vehicles (which were exempt until April 2025 but now also pay the standard rate for new registrations) and cars with a list price exceeding £40,000 when new, which pay an additional annual supplement of £410 for five years on top of the standard rate.

You can check the exact VED band for any car using our road tax calculator.

Electric vehicles (EVs) registered before 1 April 2025 remain the only cars that genuinely pay zero road tax. If you buy a used EV that was first registered before that date, you will pay nothing in VED for as long as you own it. This makes pre-2025 EVs like the Nissan Leaf, Tesla Model 3, Renault Zoe, MG4, and Volkswagen ID.3 particularly attractive from a running-cost perspective.

For EVs registered from April 2025 onwards, the government introduced VED at the standard flat rate of £190 per year. While this is still cheaper than many petrol and diesel alternatives (especially in year one), it does remove the "free tax" advantage that made early EV ownership so appealing.

It is worth noting that EVs with a list price over £40,000 are also subject to the expensive car supplement. Models like the Tesla Model S, BMW iX, and Mercedes EQS will cost £600 per year (£190 plus £410 supplement) until they are five years old.

If you are looking for a petrol car with the lowest possible road tax, your best bet is a pre-April 2017 model with very low CO2 emissions. Several small petrol and mild-hybrid cars fall into Band A (0 g/km, £0 tax) or Band B (1 to 50 g/km, £10 per year). Here are the standout choices:

For post-2017 petrol cars, the first-year tax varies (a car producing 91 to 100 g/km pays £135 in year one), but from year two the standard £190 flat rate applies to all. The main way to save on a newer petrol car is to avoid models with a list price above £40,000.

Check the full running costs for any of these models. The Toyota Yaris and Ford Fiesta are consistently among the cheapest cars to run overall.

Diesel cars generally produce more NOx and particulates than petrol equivalents, but many older diesels have impressively low CO2 figures that translate to cheap road tax under the pre-2017 system. Diesel models registered from April 2018 also face a first-year tax surcharge if they do not meet the RDE2 emissions standard, but this only affects the first year.

If you are buying a post-2017 diesel, the flat rate of £190 per year applies from year two, the same as petrol. The real savings with modern diesel come from fuel economy on high-mileage journeys rather than from tax advantages.

Hybrids sit in a sweet spot for road tax, especially older models registered before April 2017. The Toyota Prius, Hyundai Ioniq Hybrid, and Kia Niro Hybrid all produce CO2 figures in the 70 to 99 g/km range, putting them in VED Band B or C, which means annual tax of £0 to £20.

Plug-in hybrids (PHEVs) registered before 2017 with CO2 emissions of 0 to 50 g/km may qualify for zero VED. Post-2017 PHEVs pay the standard £190 from year two, but their lower first-year rate (often £0 to £10) provides a small initial saving. Just be aware that PHEVs with a high list price will trigger the expensive car supplement.

For the best combination of low tax and low fuel costs, a pre-2017 full hybrid remains one of the smartest choices on the used market.

Any car with a list price (including options) exceeding £40,000 when new attracts an additional VED supplement of £410 per year for the first five years of standard-rate tax. This means you could be paying £600 per year in road tax alone. Models commonly caught by this rule include:

• Tesla Model 3 Long Range and Performance variants
• BMW 3 Series (most variants)
• Mercedes C-Class and above
• Audi A4 and above
• Volvo XC40 and above
• Land Rover Discovery Sport

If you are buying used and want to avoid this surcharge, check whether the original list price was under £40,000. The supplement only applies for five years from the date the standard rate first applies (usually from year two), so a six or seven year old premium car may have passed out of the supplement period entirely.

Road tax is only one part of the picture. A car with zero VED but poor fuel economy and high repair bills will cost you more overall than a reliable, efficient car that pays £190 in tax. When comparing cars, always consider the total annual running cost, which includes fuel, road tax, MOT, insurance, and predicted repairs.

Our cheapest cars to run rankings factor in all of these costs using real MOT data. You might find that a car paying £20 in road tax with a 93% MOT pass rate is significantly cheaper overall than a zero-tax EV with expensive tyre and brake replacements.

Use our free car check to see the full running cost breakdown for any vehicle. Just enter the registration number on our homepage.

There are several ways to find out what VED band your car falls into:

1. CarCostCheck: Enter any registration on our site and we will show you the current tax status, annual tax cost, and due date as part of our free vehicle report.
2. DVLA Vehicle Enquiry: The government's official tool at gov.uk lets you check tax status by registration.
3. V5C logbook: Your V5C document lists the CO2 emissions figure, which you can cross-reference with the VED band table.

If you are shopping for a used car, always check the tax band before making an offer. It is one of the easiest ways to avoid an unexpected annual bill. Visit our road tax calculator for a quick lookup.

Here are practical strategies to keep your VED bill as low as possible:

• Buy a pre-April 2017 low-emission car. The CO2-based system rewards efficient vehicles with genuinely low or zero tax.
• Consider a used EV registered before April 2025. These still qualify for zero VED and benefit from low electricity costs compared to petrol.
• Avoid the £40,000 threshold. If you are looking at a premium model, check whether a lower-spec version falls under the £40,000 list price to dodge the five-year supplement.
• Check total running costs, not just tax. A car with slightly higher VED but better fuel economy and reliability may save you more overall. See our full running cost rankings for data-backed comparisons.
• Pay annually. Paying road tax by direct debit monthly or six-monthly costs more than a single annual payment. The surcharge is roughly 5% for six-monthly and 10% for monthly payments.