1–50
insurance groups
every car is rated; lower = cheaper
~50%
premium difference
a group-1 car vs a group-20 car, all else equal
£0
to list on car-spot
free for 30 days when you come to sell
If you want to keep your insurance bill down, the cheapest win happens before you buy the car — by choosing one in a low insurance group. Every car sold in the UK is rated from group 1 (cheapest) to group 50 (most expensive) by Thatcham Research, and that rating is one of the biggest factors an insurer uses to price your cover. Pick well and you can roughly halve your premium versus a similar-sized car in a higher group.
What makes a car cheap to insure
Insurers group cars on the things that drive claims cost and frequency. The cheapest-to-insure cars tend to tick all of these:
- A small engine and modest performance. A 1.0–1.2 litre city car is cheaper to insure than a hot hatch — slower cars have fewer, smaller accidents.
- Low value and cheap parts. If the car is inexpensive to repair or replace, claims cost less, so cover costs less.
- Good security. Immobilisers, alarms and a low theft rate push the group down.
- Strong safety ratings. Better crash protection means lower injury-claim costs.
- Common, well-supported models. Mainstream cars with widely available parts and approved repairers are cheaper than rare or imported ones.
The cheapest cars to insure in the UK
These models routinely appear in the lowest groups (roughly 1–10). Exact group depends on engine and trim, so treat this as a shortlist to check rather than a guarantee:
- City cars (groups 1–6): Hyundai i10, Kia Picanto, Toyota Aygo / Citroën C1 / Peugeot 108, Volkswagen up! / SEAT Mii / Škoda Citigo, Fiat 500 (1.0).
- Superminis (groups 2–12): Dacia Sandero, Ford Fiesta (1.0/1.1 base trims), Vauxhall Corsa (entry petrol), SEAT Ibiza, Škoda Fabia, Hyundai i20, Kia Rio.
- Small family cars (groups 8–15): Škoda Scala, Vauxhall Astra (lower trims), Ford Focus (1.0 EcoBoost), Kia Ceed.
- To approach with care: sporty trims (ST, GTI, Cupra), turbocharged or larger-engine versions, and heavily modified cars all jump several groups even on the same model.
A useful rule of thumb: the cheapest version of a sensible mainstream small car is almost always a low-group, low-premium choice. The badge matters less than the engine, trim and value.
How to keep your premium low (whatever you drive)
- Compare at every renewal. Loyalty is punished — the same cover from another insurer is often cheaper, and it takes a few minutes.
- Pay annually if you can. Monthly instalments carry interest (often 20%+ APR).
- Build and protect a no-claims bonus. It is the biggest long-term discount.
- Consider a black box (telematics) if you are a newer or younger driver — safe driving can cut premiums 25%+ after a year.
- Don't over-modify. Even cosmetic changes can raise the group and the premium.
If you are shopping for a low-group car right now, you can browse exactly these kinds of cars for sale on car-spot — filter by the small, sensible models above.
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