Split liability means both drivers may share responsibility for the same accident. The split could be 50/50, 70/30 or another percentage. That figure can change your compensation, excess recovery and insurance record. It may also affect your no-claims bonus. This guide explains what those percentages mean and when to challenge them.

A 50/50 Split Is Not the Only Outcome

A 50/50 liability claim gives each side half of the blame, but insurers can agree on many other percentages.

Simple example for losses affected by the agreed split.

If your losses are £10,000 and the other driver is 70% responsible, you may recover around £7,000.

The Percentage Comes From Evidence

A shared-fault car accident should not become 50/50 just because both drivers blame each other. Insurers should compare the evidence before choosing a percentage.

Useful evidence can include:

• Dashcam or CCTV
• Independent witnesses
• Scene photos
• Vehicle damage
• Driver statements
• Engineer reports

The Financial Ombudsman has upheld split decisions where the available evidence did not clearly support one driver’s version over the other. The liability percentage should follow the facts.

See What the Split Does to Your Payout

The easiest way to understand split liability is with money. If you are 30% responsible, you may lose 30% of compensation affected by shared fault. This is where contributory negligence can matter.

Quick example:
£10,000 proven loss
Other driver 70% responsible
Possible recovery: about £7,000

Even a minor change can affect the entire payout.

A 50/50 Split Does Not Mean Half a Repair

If you have comprehensive cover, your insurer may still repair your car under the policy. You do not normally get “half a repair” because responsibility is shared.

Your policy covers insured damage.
The split affects what can be recovered from the other side.

So a split liability insurance claim can still result in a full repair under your own cover.

Your Excess Shows the Real Cost

Suppose your excess is £500 and the other driver accepts 70% responsibility.

£500 × 70% = about £350 recoverable

You may therefore recover insurance excess only in the same proportion, leaving £150 unpaid in this example.

The split can also affect:

• Travel costs
• Lost earnings
• Personal injury losses
• Other reasonable expenses

Keep proof for anything you claim.

A Shared-Fault Claim Can Still Count as “Fault”

With split liability, your insurer may pay a claim but recover only part of its costs. The case can therefore remain recorded as a fault claim.

The Financial Ombudsman explains that a motor claim is generally only recorded as non-fault once the insurer recovers its costs in full. It has also confirmed that split-liability cases can remain recorded as fault because some costs are left unrecovered.

This can affect your split-liability no-claims bonus too. Protected no-claims discount may protect your discount years, but not the renewal price.

Before You Accept 50/50, Check the Reason

Do not accept 50/50 just because it sounds like an easy compromise. Ask your insurer:

• Was dashcam footage reviewed?
• Was CCTV requested?
• Were witnesses contacted?
• Were road markings considered?
• Does the damage support the split?
• Why was 50/50 chosen?

If the insurer cannot explain its reasoning, ask for it in writing.

When It Makes Sense to Challenge the Split

A challenge is stronger when new evidence appears or something important was missed.

Remember that many motor policies allow the insurer to settle a claim on your behalf. The Financial Ombudsman can still consider whether that decision was fair and based on a reasonable review of the evidence.

If the insurer will not change its decision, use its formal complaints process.

The Percentage Matters More Than the Label

Split liability is not just about sharing blame. The percentage can change your compensation, excess recovery and insurance record. Check how the insurer reached its figure before accepting it. Challenge the split when strong evidence supports a different result. Some percentage points can give you a huge discount.

FAQs

1. What does split liability mean in a car insurance claim?

It means both drivers share some responsibility for the accident. Fault may be divided 50/50, 70/30 or another way. The percentage can affect how much you recover.

2. How does a 50/50 liability claim work?

A 50/50 split gives each driver half of the responsibility. Losses affected by liability may be recovered at around 50%. Your comprehensive insurer may still repair your car.

3. Does 50/50 liability mean I pay half of my repairs?

Not usually if your comprehensive policy covers the damage. Your insurer may repair the car under the policy terms. The split mainly affects recovery and uninsured losses.

4. How do insurers decide the liability percentage?

They compare evidence from both sides. CCTV, witnesses, road layout and vehicle damage can all matter. The final percentage should reflect the facts.

5. Does split liability reduce my compensation?

Yes, some compensation can be reduced by your share of responsibility. If you are 30% at fault, you may recover around 70%. The exact result is based on the claims.

6. Can I recover my full insurance excess?

Not always when responsibility is shared. Recovery may follow the agreed percentage. Keep proof of the excess you paid.

7. Does split liability affect my no-claims bonus?

It can if your insurer cannot recover all its costs. The claim may then stay recorded as fault. Protected NCD does not guarantee the same premium.

8. Is a 50/50 accident recorded as a fault claim?

It often can be. Your insurer may still have unrecovered costs after settlement. Those costs can keep the claim recorded as fault.

9. Can I refuse a 50/50 liability offer?

Yes, you can challenge a split you believe is wrong. Ask what evidence supports it and provide anything important that was missed. Strong evidence can change the result.

10. Can I complain about a split liability decision?

Yes, ask your insurer to review the case first. Use its formal complaints process if needed. The Financial Ombudsman may then be able to review it.