Want to lower your insurance bill? Start with the right used car.
Why Insurance Costs Vary So Much
Most people assume insurance pricing is all about age, postcode, and driving history — but the car you choose is one of the biggest factors.
A used car that looks similar on the outside can sit five or ten insurance groups apart, meaning the difference between £700 a year and £1,700 a year for some drivers.
Understanding the basics puts buyers in control.
1?? Insurance Groups: The Simple Version
Every car is assigned an insurance group from 1 to 50.
Lower number = cheaper to insure.
Groups are based on:
Engine size & power
Repair costs & parts pricing
Safety rating
Theft risk
Performance & acceleration
A 1.0 petrol Corsa or Fiesta might be in Group 3–7.
A 2.0 turbo Audi might be Group 30–40+.
This is why “being smart at the start” can save hundreds a year.
2?? Engine Size & Power — The Hidden Wallet Drainer
Insurance companies love predictable risk.
That’s why lower-powered engines cost less to insure — they generate fewer high-speed claims and cheaper repairs.
Example
Ford Focus 1.0 EcoBoost → lower group, cheaper repairs
Ford Focus 1.5 EcoBoost → more power, higher group
Ford Focus ST → performance model = significantly more expensive
The engines may look similar online, but on the insurance quote they’re worlds apart.
3?? Trim Levels Matter More Than You Think
Two identical models can have totally different premiums because of their trim:
Bigger wheels = higher repair costs
Glass panoramic roofs = pricier replacements
Sport bumpers/bodykits = more likely to be claimed on
Higher-performance brakes/engines = higher risk category
Sometimes “the nicer spec” comes with an extra £300–£600 a year in insurance you weren’t expecting.
4?? Theft Risk & Security Ratings
Insurance companies analyse how easy different cars are to:
steal
break into
clone
re-sell for parts
Models with strong anti-theft tech — such as deadlocks, coded keys, and immobilisers — sit in lower groups.
On the other hand, popular models targeted for theft in Greater Manchester (e.g., German SUVs or keyless-entry models) may sit higher even if they’re older.