Insurance UK

How to Compare Car Insurance: What the Comparison Sites Don't Tell You

Comparison sites are a great starting point, but there's much they don't reveal. Here's what to check before you buy.

Comparison sites have transformed how UK drivers buy car insurance, making it quick and easy to get dozens of quotes in minutes. But price is only part of the story. The cheapest policy isn't always the best, and comparison sites have significant blind spots that can leave you underinsured or frustrated when you need to claim.

What Comparison Sites Do Well

The four main UK sites — Compare the Market, GoCompare, MoneySuperMarket, and Confused.com — are excellent for:

Getting a broad price benchmark across dozens of insurers quickly
Filtering by basic cover level (third party, third party fire and theft, comprehensive)
Identifying ballpark premium ranges before negotiating with direct insurers

What Comparison Sites Miss

Not all insurers are listed. Direct Line, Aviva, and some specialist insurers do not appear on comparison sites. Always run a separate quote with these directly — sometimes they're cheaper, sometimes they offer better terms.

Policy wording varies enormously. Two comprehensive policies at similar prices can differ significantly in what they actually cover. A £50 saving might mean losing courtesy car cover, losing windscreen repair, or facing a much higher excess on specific claim types.

Claims service isn't rated. Comparison sites show price and features but don't reliably surface claims satisfaction data. Check Defaqto ratings (independent quality assessments), Trustpilot reviews for claims experience, and the FCA's complaints data published bi-annually.

Understanding Defaqto Ratings

Defaqto rates insurance policies on a 1–5 star scale based on the breadth and quality of features — independent of price. A 5-star rated policy includes features that a 1-star policy omits. When comparing, filter for at least 3 or 4 stars to ensure adequate cover, then compare prices within that quality tier.

Key Features to Compare Beyond Price

Courtesy car cover — is it guaranteed, or only available if your car goes to an approved repairer?
Windscreen cover — does it include repair and replacement, or just repair?
No-claims bonus protection — how many claims are permitted before the NCB is affected?
Personal accident cover — what amounts are paid for injury or death?
Audio and sat-nav cover — are permanently fitted systems covered, and at what limit?
Driving other cars — does the policy include third-party cover when driving someone else's vehicle?
European cover — is driving in the EU included, and for how many days per trip?

Watch Out for Introductory Discounts

Some insurers offer generous first-year discounts that disappear at renewal. This is less prevalent since the FCA's pricing reforms of 2022, but it still occurs in subtle ways. Always compare renewal quotes against the open market — never auto-renew.

Read the Excess Carefully

The total excess payable on a claim is the compulsory excess (set by the insurer) plus the voluntary excess (chosen by you). But some policies also carry additional excesses for specific claim types — young drivers, windscreens, or specific driver categories. Check the policy schedule, not just the headline excess figure shown on comparison sites.

Understand the Insurer Behind the Brand

Many consumer-facing brands are underwritten by the same insurer. Admiral Group, for example, underwrites Diamond, Elephant Auto, and Bell. Buying two of these for different cars in the household is no more diversified than buying both from Admiral directly. Check the insurer's registered name in the policy documents.