Does Car Insurance Cover Mechanical Breakdown?
No. Car insurance does not cover mechanical or electrical breakdown caused by wear and tear, regardless of your policy type.
All motor insurance policies, including comprehensive cover, explicitly exclude failures caused by age, normal use, or lack of maintenance. Insurance covers sudden external events like accidents, theft, and fire.
If you want protection against mechanical failure, you need a separate product. Breakdown cover, extended warranties, and mechanical breakdown insurance each solve different parts of the problem.
No, and not on any policy type. Every motor policy excludes failure caused by age, normal use or missed maintenance — insurance is for sudden external events, not for a component reaching the end of its life. Three different products fill the gap and they are not interchangeable: breakdown cover gets you moving, a warranty or mechanical breakdown insurance pays for the repair.
Compare car insurance quotes and cover the repair separately.
- Why does car insurance exclude mechanical breakdown?
- When might a mechanical failure be covered by insurance?
- What are your options for mechanical breakdown protection?
- How much does breakdown cover cost?
- How can you reduce the risk of mechanical breakdown?
- What should you do if your insurer rejects a mechanical claim?
- Frequently asked questions (FAQs)
Why does car insurance exclude mechanical breakdown?
Because mechanical wear is gradual and inevitable, not sudden and unpredictable. Insurance is designed to cover risks that might never happen, not costs that definitely will.
How does the exclusion work?
Every engine will eventually need work. Gearboxes fail, clutches wear out, and timing belts snap.
If car insurance covered these costs, premiums would be dramatically higher for everyone.
The exclusion applies equally to third-party, fire and theft and third-party only policies. Even the most expensive comprehensive policy will not pay for a blown head gasket or a dead alternator if the cause is wear and tear.
What does the policy wording say?
Most policies use the phrase ‘mechanical or electrical breakdown’ in their general exclusions section. Wear and tear is a standard exclusion across every UK motor insurer, not a quirk of one policy.
This means a failed water pump at 80,000 miles, a corroded exhaust, or a dead battery are all your responsibility, not your insurer’s.
When might a mechanical failure be covered by insurance?
When the failure results from an insured event rather than wear and tear. If external damage causes a mechanical problem, your comprehensive policy may cover the repair.
What counts as an insured mechanical failure?
A pothole that cracks your suspension arm is accidental damage, and flood water that destroys your engine electrics is storm damage. An accident that bends your steering rack is collision damage.
In each case, the mechanical failure was caused by an external event, not by gradual wear. Your insurer treats the repair as part of the accident or damage claim.
How do you prove the cause?
Your insurer may send an engineer to inspect the vehicle. If they determine the failure was pre-existing or caused by wear, the claim will be rejected.
You can dispute the decision through the Financial Ombudsman Service if you disagree.
Keep records of your service history. A well-maintained car with full service stamps makes it harder for an insurer to argue that the failure was caused by neglect.
What are your options for mechanical breakdown protection?
Four products exist, and each covers a different part of the problem. Most drivers benefit from breakdown cover plus either a warranty or mechanical breakdown insurance.
How do the options compare?
| Protection type | What it covers | What it excludes | Typical annual cost |
| Breakdown cover | Roadside assistance, towing to a garage, onward travel | Parts, labour, and repair costs | £20-£60 |
| Manufacturer warranty | All mechanical and electrical faults for 3-7 years | Wear items (brakes, clutches, tyres) | Included with new car |
| Extended warranty | Mechanical and electrical faults after manufacturer warranty expires | Wear items, pre-existing faults, cars over 10-15 years | £150-£500 |
| Mechanical breakdown insurance (MBI) | Comprehensive mechanical cover, often including labour | Wear items, cosmetic damage, modifications | £200-£600 |
What is the difference between a warranty and MBI?
Extended warranties are regulated as service contracts, not insurance products. MBI is regulated by the FCA as an insurance policy, which means you have access to the Financial Ombudsman if a claim is disputed.
MBI policies also tend to offer higher claim limits and cover labour costs as standard. Extended warranties vary widely in quality, so read the exclusions carefully before buying.
How much does breakdown cover cost?
Basic breakdown cover with roadside assistance and local recovery costs £20 to £35 per year. Premium packages with national recovery and home start cost £40 to £60.
Is breakdown cover worth it?
A single roadside call-out without cover costs £100 to £300. Even the cheapest policy pays for itself after one use.
Some comprehensive policies include basic roadside assistance as standard. Check your policy documents before buying separate cover.
Our car insurance costs guide explains what is typically included at each price point.
What about European breakdown cover?
European cover adds £30 to £50 per year. It extends roadside assistance, recovery, and onward travel to driving abroad.
If you drive in Europe more than once a year, annual European cover is cheaper than buying single-trip policies each time.
How can you reduce the risk of mechanical breakdown?
Regular servicing is the single most effective way to prevent unexpected failures. A full service costs £150 to £300 but catches problems before they become expensive repairs.
What maintenance matters most?
Oil and filter changes are the most important. Running low on oil or using degraded oil accelerates engine wear and can cause catastrophic failure.
Timing belt replacement is the most critical scheduled maintenance item. A snapped timing belt can destroy an engine in seconds, and replacement costs £300 to £600 depending on the vehicle.
When should you budget for major repairs?
Most mechanical failures cluster between 60,000 and 120,000 miles. If your car is approaching this range, consider setting aside a repair fund or taking out an extended warranty.
Our tips to lower your premium include advice on managing overall motoring costs.
Cars over five years old are statistically more likely to break down. This is when breakdown cover becomes most valuable, because the manufacturer warranty has usually expired.
What should you do if your insurer rejects a mechanical claim?
First, ask for a written explanation of the rejection. If the insurer says the failure was caused by wear and tear but you believe it resulted from an insured event, follow the insurer’s own complaints procedure and then escalate to the Financial Ombudsman — the FCA sets out how the process works.
What evidence helps?
A full service history showing the car was properly maintained. An independent engineer’s report confirming the failure was caused by impact or external damage rather than wear.
If your claim involves accidental damage, your policy excess still applies. Make sure the repair cost exceeds your excess before pursuing the claim.
Frequently Asked Questions (FAQs)
No, because comprehensive insurance covers accidental damage, theft, fire, and weather damage. Mechanical and electrical failures from wear and tear are explicitly excluded from all motor insurance policies.
Car insurance pays for damage from accidents, theft, and other insured events. Breakdown cover sends a mechanic to fix your car at the roadside or tows it to a garage, but does not pay for parts or labour.
No, because breakdown cover pays for the roadside call-out and towing only. For parts and labour costs, you need an extended warranty or mechanical breakdown insurance.
For cars between 3 and 10 years old with 60,000 to 120,000 miles, MBI can save thousands on a single major repair. A gearbox replacement costs £1,500 to £3,000, which exceeds several years of MBI premiums.
Yes, many insurers offer breakdown cover as an add-on. You can also buy standalone cover from providers like the AA, RAC, or Green Flag, which may be cheaper.
Call a local garage or recovery service and arrange private towing. A single call-out and tow typically costs £100 to £300 depending on location and distance.