| By Chandraketu Tripathi | Updated April 2026 | |||||||||||||||||||||||||||||||||
| Before buying any car, checking its insurance group could save you hundreds or even thousands of pounds per year. Every car sold in the UK is rated from Group 1 (cheapest to insure) to Group 50 (most expensive), based on repair costs, performance, parts availability, and security. For young drivers, where insurance can cost £1,500-2,500+ per year, the difference between a Group 1 and a Group 20 car can be over £1,000/year in premiums. | |||||||||||||||||||||||||||||||||
Key Facts Insurance groups: 1 (cheapest) to 50 (most expensive) | Set by: Thatcham Research | Check any car: thatcham.org or comparison sites | Young driver saving: £500-1,500/year choosing Group 1-5 vs Group 20+ | |||||||||||||||||||||||||||||||||
What Determines a Car's Insurance Group? | |||||||||||||||||||||||||||||||||
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Insurance Groups 1-50: What to Expect | |||||||||||||||||||||||||||||||||
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Cheapest Cars to Insure UK 2026 — Groups 1-5 | |||||||||||||||||||||||||||||||||
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How Much Can You Save by Choosing a Lower Group Car? | |||||||||||||||||||||||||||||||||
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Frequently Asked QuestionsWhat are car insurance groups UK? Every car sold in the UK is assigned an insurance group from 1 (cheapest to insure) to 50 (most expensive). The groups are set by Thatcham Research on behalf of the Group Rating Panel — which includes insurers and the Association of British Insurers (ABI). The group is based on: repair costs, parts availability, performance and engine size, security features, and safety ratings. A car in Group 1 might cost a young driver £800-1,200 to insure; the same driver in a Group 40+ car might pay £3,000-5,000+. What is the cheapest car to insure UK 2026? The cheapest cars to insure in the UK are typically in Groups 1-5 and include: Volkswagen Polo 1.0 (Group 2-5), Ford Ka (Group 1-3), Vauxhall Corsa 1.0 (Group 3-5), Citroën C1 (Group 1-3), Fiat Panda (Group 1-3), and Skoda Fabia 1.0 (Group 2-4). These small cars with small engines, low repair costs, and good security features attract the lowest insurance premiums. For young drivers, choosing a Group 1-5 car instead of a Group 20 car can save over £1,000/year in insurance costs. How do I check a car's insurance group UK? You can check any car's insurance group using the registration number on the Thatcham Research website (thatcham.org) or by using the 'check a car's insurance group' tool on comparison sites like Confused.com, MoneySuperMarket, or Admiral. You can also check on What Car?, Parkers, or Auto Trader when researching a car to buy. Always check the insurance group before buying a car — especially as a young driver, where the difference between groups can be hundreds of pounds per year. Does car insurance group change with modifications? Yes — modifications to your car can increase or decrease its insurance group. Performance modifications (bigger engine, turbo upgrades, body kits) typically increase the group number and make the car more expensive to insure. Security upgrades (approved alarms, immobilisers) can sometimes reduce the group. Importantly, you must declare all modifications to your insurer — failure to do so is considered fraud and can void your policy. Even cosmetic modifications like tinted windows or alloy wheel upgrades may need to be declared. | |||||||||||||||||||||||||||||||||
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| Disclaimer: Always compare quotes before buying. Sources: Thatcham Research, ABI, Confused.com, What Car?, Parkers. April 2026. |
Car Insurance Groups UK 2026: Groups 1-50 Explained & Cheapest Cars
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Editorial Disclaimer The content on Kaeltripton.com is for informational and educational purposes only and does not constitute financial, investment, tax, legal or regulatory advice. Kaeltripton.com is not authorised or regulated by the Financial Conduct Authority (FCA) and is not a financial adviser, mortgage broker, insurance intermediary or investment firm. Nothing on this site should be construed as a personal recommendation. Rates, figures and product details are indicative only, subject to change without notice, and should always be verified directly with the relevant provider, HMRC, the FCA register, the Bank of England, Ofgem or other appropriate authority before any financial decision is made. Past performance is not a reliable indicator of future results. If you require regulated financial advice, please consult a qualified adviser authorised by the FCA. |
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