The average comprehensive premium in Britain now sits at roughly £560 a year according to the Association of British Insurers, having come down from the peak of the last couple of years. That average hides an enormous spread: the same driver in the same car can be quoted double, depending on the insurer, the day, and how they filled the form in.
Monthly instalments are a loan
Spreading a premium over twelve payments is credit, and it is priced like credit. At a typical 25% APR, a £560 policy paid monthly costs somewhere around £630–£640 across the year — roughly £75 for the convenience.
If the lump sum is genuinely not available, a 0% purchase credit card paid off across the year usually beats the insurer’s instalment rate, provided you actually clear it. If it is available, paying annually is a guaranteed double-digit return on money you were going to spend anyway.
What insurers are actually pricing
| Factor | Why it moves the price | Can you change it? |
|---|---|---|
| Postcode | Claim frequency, theft rates and repair costs in your area | Only by moving — but keep it accurate |
| Age & experience | Under-25s and newly licensed drivers claim more often | Time, and telematics in the meantime |
| Insurance group | Every model sits in a group from 1 to 50 based on repair cost, performance and security | Yes — check the group before you buy the car |
| Annual mileage | Fewer miles, less exposure | Yes — use your real MOT figures, not a guess |
| Where it is parked overnight | Driveway and garage beat the street | Sometimes |
| Voluntary excess | You carry more of a claim | Yes — but only to a level you could pay tomorrow |
| Occupation | Insurers hold claim statistics by job title | Only the wording, and only if it stays accurate |
| No-claims years | The single biggest discount most drivers hold | Protect it if the cost is small |
Fifteen ways to pay less
- Never auto-renew. Renewal prices assume you will not look. This one habit is worth more than the other fourteen combined.
- Quote 21 to 26 days out. Prices rise sharply in the last week before renewal, because last-minute buyers claim more.
- Use two or three comparison sites — they do not share insurer panels — then check the large insurers that appear on none of them.
- Phone your insurer with the best rival price and ask to be moved to the new-customer rate.
- Pay annually rather than monthly.
- Raise the voluntary excess to a level you could genuinely find in a week.
- Give real mileage from your MOT history. Most people overstate.
- Add an experienced named driver who really does drive the car occasionally.
- Check the insurance group before buying a car. Two similar hatchbacks can sit ten groups apart.
- Consider telematics if you are young or do under about 5,000 careful miles a year.
- Drop the extras you already have. Breakdown cover through a bank account, legal cover through a union, courtesy car you would not use.
- Reconsider third-party cover. On older cars it is often more expensive than comprehensive, not less — get both quotes.
- Protect no-claims when the premium for doing so is small relative to what a claim would cost you.
- Keep the car on the drive and say so, accurately.
- Fix the parts that put you in a higher bracket — a car with an alarm and immobiliser that works, and no undeclared modifications.
Fronting — naming a parent as the main driver of a car actually driven by their child. It is fraud, the policy is void, and the claim is refused. Undeclared modifications — including wheels, suspension, remaps and tow bars. Wrong use class — commuting or business mileage declared as social. All three are cheap to get right and ruinous to get wrong.
What insurance is worth in the whole picture
At 16% of the total, insurance is the third-largest line after fuel and depreciation. Shopping it properly is the fastest few hundred pounds available to most drivers — but it will not, on its own, fix a car that is simply too expensive to own. Put your figures through the cost calculator and look at the standing-cost line: if that half is large, insurance is a symptom rather than the disease.
Sources: average premium — Association of British Insurers motor premium tracker, as reported September 2026; share of total motoring costs — NimbleFins. The monthly-instalment figure is arithmetic on a £560 premium at 25% APR and is an illustration, not a quote. Nothing here is financial advice. Last reviewed September 2026.