If you’re thinking about buying a car in the UK — especially if insurance costs are a concern — understanding car insurance groups is essential. One of the biggest factors in how much you’ll pay for insurance is the insurance group a vehicle sits in. But what exactly is the lowest insurance group, and why does it matter? In this guide, we’ll explain everything you need to know so you can make smarter choices when shopping for a car.
What Are Car Insurance Groups?
The UK uses a system of car insurance groups to help insurers assess how risky a car is to insure. Each vehicle is assigned to a group from 1 to 50:
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Group 1 is the lowest and cheapest to insure.
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Group 50 is the highest and most expensive to insure.
This ranking is determined by the Group Rating Panel, made up of members from the Association of British Insurers (ABI) and Lloyd’s Market Association (LMA). They evaluate factors like the car’s value, performance, repair costs, safety features and security systems. Insurers then use this rating as one of the elements when calculating your premium.
What Is the Lowest Insurance Group?
The lowest insurance group in the UK is Group 1. Cars in Group 1 are generally the cheapest to insure because they tend to be:
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Smaller and less powerful
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Cheaper to repair or replace
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Less attractive to car thieves
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Equipped with basic safety and security features
While a Group 1 rating doesn’t guarantee the lowest premium in every case, it does usually lead to lower insurance costs compared to higher‑group vehicles.
Why Group 1 Cars Are Cheapest to Insure
Insurance companies use complex algorithms to estimate risk. Group 1 cars typically cost less to insure because they usually have:
🔹 Smaller Engines
Lower engine power means a reduced chance of high‑speed collisions, which insurers see as lower risk.
🔹 Lower Repair Costs
Smaller cars often have cheaper parts and labour costs, reducing what insurers might have to pay after a claim.
🔹 Better Security or Lower Theft Risk
Some Group 1 cars are less appealing to thieves, which impacts premiums.
Examples of Group 1 Cars
While the specific insurance group of a car can vary by trim level and year, common examples of vehicles historically classified in Group 1 include:
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Hyundai i10 – one of the most popular city cars for low insurance costs.
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Fiat Panda – a small, basic hatchback with low running costs.
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Citroën C1 – another small city car often in the lowest insurance group.
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Chevrolet Spark – older models often fall under Group 1.
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Kia Picanto – compact and easy to drive, with some versions in lower insurance groups.
Keep in mind that even within the same model range, different trims, engine sizes and options can affect the insurance group, so always check the exact specification before purchasing.
What Cars Are Cheap to Insure Beyond Group 1?
While Group 1 is the lowest, there are other low‑risk groups worth considering:
🚘 Group 2–5
These cars are still relatively inexpensive to insure and include a wider range of popular city cars and small hatchbacks. Examples might be:
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Toyota Aygo
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Vauxhall Corsa (entry‑level trims)
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Some versions of the Volkswagen Polo
These all often fall into Groups 2 to 5, keeping insurance costs competitive.
Choosing a car in Groups 1–5 typically gives you the best chance of lower insurance premiums — especially important for younger drivers or those on a budget.
How Insurance Groups Affect Your Premium
It’s important to understand that insurance groups are just one part of how your premium is calculated. Your personal details — such as age, address, driving history and annual mileage — also play a big role. However, choosing a car in a low insurance group can still make a significant difference in what you pay.
For example:
| Insurance Group | Typical Insurance Cost | Risk Level |
|---|---|---|
| Group 1 | Low | Lowest |
| Group 2–10 | Low–Moderate | Low |
| Group 11–20 | Moderate | Medium |
| Group 21–30 | Higher | Higher |
| Group 31–50 | Highest | Highest |
This is a general guide — individual premiums may vary depending on other factors.
How to Find a Car’s Insurance Group
Before buying a car, it’s wise to check its insurance group rating. You can use:
🧾 Manufacturer or Dealer Information
Some official vehicle spec sheets include insurance group details.
🔍 Online Tools and Checkers
Sites like Parkers or comparison tools on insurance sites let you search a specific car’s group by registration, make and model.
📊 Insurance Comparison Sites
Comparison websites often list insurance group as part of the vehicle details, which helps you compare both the car and its potential insurance costs before you buy.
Do Lower Insurance Groups Always Mean Cheaper Insurance?
Generally, cars in lower insurance groups tend to have cheaper premiums — but it’s not guaranteed. Insurers use group ratings as a guideline, but they also consider your personal risk profile. For example:
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A Group 1 car may still cost more for a young driver with no experience compared to an older driver with a clean record.
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Some higher‑group cars with excellent safety and security features could sometimes be cheaper to insure than expected.
So while choosing a Group 1 car helps, it doesn’t automatically guarantee the lowest policy price.
Top Tips for Insuring Low Group Cars
If you’re focused on the lowest possible insurance costs, here are some smart steps:
✅ Choose a Car in Insurance Group 1–5
These groups generally offer the lowest premiums.
✅ Compare Quotes Before You Buy
Get insurance quotes for the exact car you’re considering — different insurers price the same vehicle differently.
✅ Consider Telematics Insurance
“Black box” policies reward safe driving and can cut premiums further.
✅ Build Your No‑Claims Bonus
Keeping years without claims reduces future costs dramatically.
✅ Pay Annually Instead of Monthly
This avoids interest and fees that come with instalments.
Choosing wisely now can save you hundreds or even thousands of pounds over the life of your policy.
FAQ: Lowest Insurance Group in the UK
What is the cheapest insurance group?
The cheapest insurance group in the UK is Group 1, which typically contains small, low‑powered cars that are cheaper to repair and less likely to be stolen.
Are all Group 1 cars cheap to insure?
Most Group 1 cars tend to have low premiums, but your age, driving history and location will also affect the final price.
Can a higher insurance group car sometimes be cheaper?
Yes — insurance group is one factor among many. A higher group car with strong safety and security features, or your personal low‑risk profile, may sometimes cost less than expected.
How many insurance groups are there?
There are 50 car insurance groups in the UK, with Group 1 the lowest and Group 50 the highest risk.
Where can I check my car’s insurance group?
Tools like Parkers car insurance group checker or comparison sites allow you to search by make, model and registration.
Useful links
Which is the cheapest car insurance in the UK?
Final Thoughts
Understanding the lowest insurance group in the UK — and how insurance groups work — can help you make smarter car buying decisions. Group 1 cars are generally the cheapest to insure, especially for new drivers or those on tighter budgets. But remember, price isn’t everything — you also want a car that’s safe, reliable and suits your lifestyle.
If you’re unsure which car is right for you or want help comparing insurance quotes for low‑group vehicles, we can help you find the best options that match your budget and needs.