How to Keep Car Insurance Costs Down: Simple Steps That Work
Published 22nd of January 2014·Updated 21 April 2026
Reviewed by: Reviewed for accuracy April 2026
Car insurance premiums can rise sharply at renewal even when you have not made a claim, because insurers reprice based on market conditions and assume loyal customers will not shop around. The most effective way to keep your costs down is to compare prices every year at renewal, adjust a small number of policy variables, and understand which factors you can and cannot control.
Short Summary
Comparing quotes on at least two comparison sites, such as Compare the Market and GoCompare, and then checking directly with insurers not included in those panels (Direct Line is the most significant example), gives you the most complete picture of what is available.
The Association of British Insurers found that motorists who switch at renewal save an average of over £100 compared to those who accept their auto-renewal price. Your current insurer's renewal quote is rarely their best price; calling them with a competitor's quote often results in a reduction.
Certain factors are within your control and directly affect your premium: your voluntary excess, your annual mileage, where you park overnight, and the car you drive. Adjusting any of these can produce meaningful savings.
Building a no-claims bonus is the most powerful long-term tool for reducing car insurance. A five-year no-claims bonus can reduce premiums by up to 70 per cent with some insurers. Protecting that bonus costs a small additional premium but is usually worth it.
Does using a comparison site actually save money?
Yes, consistently. Comparison sites such as Compare the Market, MoneySuperMarket, GoCompare, and Confused.com aggregate quotes from dozens of insurers simultaneously. Running a search takes around ten minutes and regularly reveals prices £100 to £300 lower than a renewal quote.
No single comparison site covers every insurer. Compare the Market uses a different panel of insurers to GoCompare. Running searches on two sites gives you a broader view. Direct Line, Aviva, and NFU Mutual do not appear on most comparison sites and must be checked directly. For standard cars and drivers, the difference between sites can be significant.
How does my occupation affect my car insurance?
Insurers use occupation as a statistical risk indicator. Certain job titles are associated with higher claims rates, and premiums are priced accordingly. If your occupation can be described in more than one accurate way, it is worth trying each version when getting quotes.
You must not misrepresent your occupation. Deliberately choosing an inaccurate job title to get a cheaper premium is misrepresentation and could invalidate your policy. However, if you are genuinely both a "journalist" and a "writer," or both an "office manager" and an "administrator," testing both accurate options is legitimate.
What effect does a voluntary excess have on my premium?
Increasing your voluntary excess reduces your premium because you are agreeing to pay more of any claim yourself, which reduces the insurer's potential cost. The reduction varies by insurer and driver profile, but moving from a £100 voluntary excess to a £250 voluntary excess often produces a saving of £30 to £100 or more.
Set your voluntary excess at a level you could realistically afford to pay in an emergency. Your total excess is the voluntary amount plus any mandatory excess the insurer sets, so check both figures before committing. A total excess of £700 or more on a car worth £2,000 makes little financial sense.
Does the car I drive make a big difference to my insurance cost?
Yes, significantly. Cars are rated in insurance groups from 1 to 50 by Thatcham Research, based on their repair cost, security features, performance, and the availability of parts. A car in Group 1 is the cheapest to insure; Group 50 is the most expensive.
Before buying a new car, check its insurance group using the free Thatcham Research tool at thatcham.org or through comparison sites. The difference between a Group 5 and a Group 20 car can amount to several hundred pounds a year in premiums for the same driver. Smaller engines and standard (not modified) specifications keep insurance groups lower.
Should I build and protect my no-claims bonus?
Yes. A no-claims bonus (NCB) is accumulated by completing full policy years without making a claim. Most insurers offer the following structure:
| Years without a claim | Typical discount |
|---|---|
| 1 year | 20-30% |
| 2 years | 35-40% |
| 3 years | 45-50% |
| 4 years | 55-60% |
| 5 years or more | 60-70% |
Protecting your NCB costs a small additional premium, typically 5 to 10 per cent of your base premium. Protection usually allows one or two fault claims in a set period (often three years) without losing your discount. Whether it is worth paying for depends on how long you have held your bonus and how much an accident would cost you in raised premiums over the following years.
Does where I park my car affect my insurance?
Yes. Parking in a locked garage overnight is the lowest-risk option in insurers' view. A driveway is the next best. Parking on a public road, particularly in a postcode with high vehicle crime rates, produces higher premiums.
If your circumstances have changed and you now park in a more secure location than at your last renewal, update your policy and get a new quote. Even switching from street parking to a driveway can produce a saving of £20 to £80 at renewal, depending on your area and insurer.
How do I stop my car insurance going up every year?
The most reliable method is to shop around every year rather than accepting your auto-renewal. Insurers typically offer their most competitive prices to new customers. Comparing on at least two sites and calling your current insurer with the cheapest quote you have found often results in your current insurer matching or beating it. If they will not, switch.
Does being a named driver on someone else's policy help me build a no-claims bonus?
No. Time spent as a named driver on another person's policy does not accumulate a no-claims bonus in your own name. You only build your own NCB when you are the main policyholder on a policy in your own name.
Can I transfer my no-claims bonus to a new insurer?
Yes. Your no-claims bonus belongs to you, not to the insurer. When you switch, you will need to provide proof of your bonus, typically a renewal letter or a confirmation letter from your previous insurer. Most insurers accept NCB built with any FCA-regulated UK insurer.
Is telematics insurance worth it?
For drivers under 25, a telematics (black box) policy is usually the most cost-effective option. Providers including Admiral, Direct Line, and Hastings Direct offer black box products where your premium reflects your actual driving behaviour, including speed, braking, cornering, and time of day. Safe young drivers can save 30 per cent or more compared to standard policies. The trade-off is less flexibility in when and how you drive.
What should I do if my car insurance renewal quote has gone up sharply?
Do not auto-renew. Run a full comparison on at least two sites and check directly with two or three insurers not listed on those sites. If you find a cheaper quote, call your current insurer first; customer retention departments often have authority to reduce the renewal price. If they match the price, you can stay without any disruption. If they will not, switching takes around 20 minutes and you will not lose cover.