Motor Insurance Add-Ons: Which Are Worth Paying For and Which Aren't

Breakdown cover from your insurer costs on average 40% more than a standalone AA or RAC membership. Legal expenses cover, on the other hand, is consistently undervalued. The six most common motor insurance add-ons each tell a different story about whether the premium is worth paying.

Breakdown Cover: Almost Always Cheaper Elsewhere

The UK breakdown market is dominated by three standalone providers: the AA, RAC, and Green Flag. Annual membership for a single vehicle with roadside, home start, and national recovery from all three runs £75–£120 per year, depending on response time tiers and whether you need European cover.

Breakdown cover added to a motor policy through Aviva, Direct Line, or Admiral runs £45–£75 per year from those same insurers — but the coverage terms are typically narrower. Insurer breakdown add-ons frequently exclude home start (the vehicle not starting at your home address), have higher annual mileage exclusions, and use third-party contractors rather than a dedicated national fleet. The 40% cost premium for what is usually inferior coverage has been consistent in our user data.

There is one exception: if you need multi-vehicle or family coverage, some insurer add-on packages become more competitive. But for a single vehicle with normal usage, buy breakdown cover standalone.

Legal Expenses Cover: Consistently Worth It

Motor legal expenses cover — which funds the legal costs of pursuing an uninsured driver, contesting a liability dispute, or recovering uninsured losses after a non-fault accident — costs £20–£35 per year as a motor add-on and considerably more as a standalone product.

The FOS upholds a high proportion of complaints involving uninsured losses (replacement transport, excess recovery, lost earnings) when the policyholder has legal expenses cover and the at-fault driver was third-party. Without it, these recoveries typically require a solicitor instructed on a conditional fee arrangement with no guarantee, or a claim directly against an uninsured driver through the Motor Insurers' Bureau — a process that takes 18–36 months.

At £20–£35 per year, motor legal expenses is one of the few add-ons where the benefit-to-cost ratio is clearly positive for most drivers. The one scenario where it's unnecessary: if you already have it bundled into your home insurance. Some Churchill and AXA home policies include motor legal expenses protection in the legal assistance add-on. Check before paying twice.

Key Cover: Overpriced for What It Is

Motor key cover — which pays for replacement keys if yours are lost or stolen — typically costs £25–£40 per year as an insurer add-on. Replacement car keys for modern vehicles with proximity fobs cost £150–£400 depending on make and model. The claim frequency for key loss is low (industry average approximately once every 9 years per vehicle), which means the actuarial expected value of the cover is roughly £17–£44 per year — in line with the premium.

The problem is that many contents insurance policies include key cover as standard. AXA, LV=, and Legal & General contents policies all include replacement locks cover that extends to car keys. If your contents policy includes this, the motor add-on is a direct duplicate. Check the "additional covers" section of your contents policy wording before paying for motor key cover.

Courtesy Car Cover: Only Matters If Your Cover Doesn't Already Include It

A courtesy car is a temporary vehicle provided while yours is being repaired after a claim. Most comprehensive motor policies include a courtesy car for a defined period — typically up to 14 days for repairs at an approved repairer. The add-on extends this to 28 days, or provides a like-for-like vehicle rather than a standard courtesy car, or covers courtesy car provision in fault accidents (where the standard courtesy car entitlement may not apply).

Whether this add-on is worth buying depends on two factors: how long your vehicle is likely to be off the road (older vehicles take longer to repair due to parts sourcing), and whether you have alternative transport. If you commute by car and public transport is a significant hardship, the extended courtesy car provision is worth £15–£25 per year. If you live in London and don't need the car daily, it isn't.

Windscreen Cover: Check Your Existing Policy First

Windscreen replacement and repair is included in most comprehensive UK motor policies as standard, with a separate windscreen excess (typically £75–£100) that doesn't affect your no claims discount. The windscreen add-on sold by comparison sites and some insurers typically reduces or eliminates the windscreen excess.

The average windscreen replacement costs £250–£400 for modern vehicles. The excess reduction add-on costs £10–£20 per year. The maths is straightforward — this add-on makes sense if you expect to claim on windscreen cover (cracked or chipped screens are common on motorway drivers, less so for urban drivers). The important check: confirm your base policy includes windscreen cover at all, and confirm the excess amount. Some third-party fire and theft policies exclude windscreen damage entirely.

Personal Accident Cover: Already in Most Policies

Personal accident cover pays a lump sum for death or serious injury to the driver or passengers following an accident. Most comprehensive policies include a base personal accident benefit — typically £5,000–£10,000 for death or permanent disability — and the add-on increases this to £25,000–£50,000.

The add-on is almost always overpriced relative to standalone personal accident insurance or a life insurance policy that covers accidental death comprehensively. A term life policy covering £100,000 of accidental death typically costs less than £10 per month for a healthy adult under 50. The motor personal accident add-on at £20–£30 per year covers only road accident scenarios. If you want meaningful personal accident cover, buy it as a dedicated product.

How to Audit Your Add-Ons Before Renewal

The time to review motor add-ons is six weeks before renewal, when you receive the renewal notice. At that point, pull up your policy schedule and list every add-on included and its premium. Then check each against your other policies: does your contents insurance cover any of the same risks? Do you have a standalone AA or RAC membership? Is legal expenses already bundled elsewhere?

The default at renewal is to accept everything unchanged. Insurers rely on that inertia. A five-minute audit before renewal often eliminates one or two add-ons without any coverage reduction — because the coverage was already held elsewhere. On a typical household motor policy with four add-ons, that audit saves an average of £45–£90 per year.

Rehuman flags duplicate cover automatically when you hold a motor policy alongside home or contents insurance. If you add both policies to the platform, it identifies which add-ons overlap and which are genuinely additive — so you can make the renewal decision with complete information rather than habit.