What Car Insurance Doesn't Cover UK 2026

Last reviewed: 26 April 2026

Standard exclusions in Comprehensive motor insurance

Even the most comprehensive UK Comprehensive motor insurance policy contains defined exclusions, circumstances where the policy does not pay. These exclusions are required to be disclosed in the Insurance Product Information Document (IPID) under FCA ICOBS rules, and in the full policy wording. Reading the exclusions section before purchase, not after a claim, prevents the most common claim dispute scenarios.

Mechanical breakdown and wear and tear: Motor insurance covers sudden, unforeseen external damage events. It does not cover: engine failure from mechanical wear; gearbox failure; oil-seal deterioration; suspension wear; battery failure (unless the battery is damaged in an insured event); or any mechanical or electrical failure arising from the vehicle's age or accumulated use. Breakdown cover is a separate product.

Business use without declaration: Where a policyholder uses the vehicle for client visits, multi-site working, or commercial travelling and has not declared business use (Class 1, 2, or 3), any claim arising during a business journey may be declined on the basis that the use class at the time of the incident was not covered by the declared policy terms.

Track day and racing exclusion: All UK motor policies exclude use on a closed circuit, racing track, or speed event, regardless of whether the event is competitive or not. A road policy provides no cover for track days.

Driving under the influence of alcohol or drugs: Claims arising from incidents where the policyholder was driving above the legal alcohol limit or impaired by drugs are excluded. A drink-driving conviction also triggers the DR-code endorsement affecting future insurance.

Deliberate damage by the policyholder: Where the policyholder intentionally damages their own vehicle (to stage a claim), this is insurance fraud. Motor insurance never covers deliberate damage caused by the insured person.

Undeclared modifications: exclusions versus policy void

A specific category of exclusion relates to vehicle modifications. The outcome of an undeclared modification, whether the policy is simply unable to pay a specific claim or is voided entirely, depends on the nature and extent of the non-disclosure.

Where a single undeclared modification (an aftermarket exhaust, for example) is discovered at claims stage, the insurer's response under CIDRA 2012 depends on: whether the non-disclosure was deliberate (void from inception) or careless (proportionate reduction in claim). The policy may not be voided entirely, only the specific claim affected by the undeclared modification may be refused or reduced.

Where multiple material modifications have been systematically undeclared, essentially misrepresenting the vehicle's specification throughout the policy, the insurer is more likely to treat this as a deliberate material non-disclosure warranting policy voidance from inception.

The difference between claim refusal and policy voidance

A fundamental distinction for policyholders to understand is the difference between a specific claim refusal (arising from an applicable policy exclusion) and policy voidance (arising from a material non-disclosure under CIDRA 2012).

Claim refusal: The insurer declines to pay a specific claim because the circumstances fall within a defined policy exclusion. The policy itself remains intact and in force. Future claims from different circumstances may still be paid. Example: a claim for mechanical breakdown is refused (mechanical failure exclusion) while the policy remains valid for any future road accident claim.

Policy voidance: The insurer declares the policy void from inception, treating it as if it never existed. All claims are refused, premium paid is typically retained by the insurer, and any third-party payments already made may be sought back. Policy voidance arises from material non-disclosure (deliberately incorrect information at application) under CIDRA 2012, not from a standard exclusion clause.

How to read the exclusions in your policy

The FCA requires all motor insurance products to include an Insurance Product Information Document (IPID), a standardised two-page summary presenting key inclusions and exclusions. The IPID is issued at quotation and at renewal. Reading the IPID's exclusions section before purchase identifies the most important policy limits without wading through the full policy wording.

The full policy wording, a longer document, contains the definitive exclusions list. Where the IPID exclusion is ambiguous, the full policy wording is the controlling document.

FOS data from 2024-25 indicates that exclusion disputes, where policyholders believed they were covered but the insurer declined citing an exclusion, account for a meaningful proportion of motor insurance complaints. The FOS upholds approximately 30 percent of motor complaints overall; exclusion disputes may have variable uphold rates depending on whether the exclusion was clearly disclosed pre-purchase. FCA ICOBS pre-contractual disclosure obligations require that material exclusions are clearly communicated before purchase.

Key Figures

How to identify exclusions before purchase using the IPID

The Insurance Product Information Document (IPID), a standardised FCA-required two-page summary for all UK motor insurance products, mandatory from October 2018, is the most efficient tool for identifying key exclusions before purchase. The IPID presents the most significant inclusions and exclusions in a consistent format designed for consumer comparison.

When comparing motor insurance products, obtain the IPID from each insurer at quotation and review the exclusions section before committing. Pay specific attention to: any exclusions related to your specific use case (business use, modified vehicle, older vehicle with potential mechanical issues); any excess structure that produces very high effective out-of-pocket costs for likely claim types; and any clauses that could trigger claim refusal based on specific circumstances of common incidents in your driving environment.

Where an exclusion is ambiguous, its wording is unclear about whether a specific situation would be covered, submit a written pre-purchase query to the insurer and request a written response. The FCA's ICOBS rules require insurers to provide clear, accurate pre-contractual information, and a written response to a specific exclusion query provides documentary evidence if a dispute arises later. FOS complaint data confirms that exclusion clarity at the pre-purchase stage reduces post-claim disputes significantly.

Frequently Asked Questions

What common things are not covered by car insurance?

Standard exclusions include: mechanical breakdown and wear and tear; business use not declared on the policy; track day and circuit driving; driving under the influence of alcohol or drugs; deliberate damage by the policyholder; and modifications not declared to the insurer. Check the IPID for the full exclusions list on your specific policy.

What is the difference between a claim refusal and a policy void?

A claim refusal means the insurer declines to pay a specific claim because it falls within a policy exclusion, the policy remains in force for future claims from different circumstances. A policy void means the insurer declares the policy as never having existed, arising from material non-disclosure under CIDRA 2012, not from a standard exclusion.

Does car insurance cover mechanical breakdown?

No. Mechanical breakdown, wear and tear, and electrical failure from the vehicle's age or accumulated use are standard exclusions in all UK motor insurance tiers. Breakdown cover is a separate product.

What happens if I drive for business without declaring it?

Business driving without the appropriate use class declared (Class 1, 2, or 3 as required) is an undeclared use change. Claims arising during business journeys may be declined. The insurer may also treat the non-disclosure as a CIDRA 2012 material non-disclosure, either reducing the claim proportionately or voiding the policy entirely.

Can the FOS help if I dispute an exclusion?

Yes. If your insurer refuses a claim citing an exclusion that you believe was not adequately disclosed before purchase, raise a formal complaint and, if unresolved within eight weeks, escalate to the Financial Ombudsman Service (FOS) at financial-ombudsman.org.uk. FCA ICOBS pre-contractual disclosure obligations require material exclusions to be clearly communicated before purchase.

Sources & Verification

• FCA ICOBS, pre-contractual disclosure: https://www.fca.org.uk
• Consumer Insurance (Disclosure and Representations) Act 2012: https://www.legislation.gov.uk/ukpga/2012/6
• Financial Ombudsman Service: https://www.financial-ombudsman.org.uk
• ABI Motor Insurance data: https://www.abi.org.uk
• Road Traffic Act 1988, section 143: https://www.legislation.gov.uk/ukpga/1988/52
• HMRC Insurance Premium Tax: https://www.gov.uk/guidance/insurance-premium-tax
• BIBA, Find a specialist broker: https://www.biba.org.uk/find-insurance/

This article is for informational purposes only and does not constitute financial advice. Always verify rates with official sources before making any financial decision.