Disputed Liability Car Accident Claim Ireland: What to Do When Fault Is Contested
Author: Gary Matthews, Principal Solicitor — Law Society of Ireland PC No. S8178 • 3rd Floor, Ormond Building, 31–36 Ormond Quay Upper, Dublin D07 • 01 903 6408 •
Definition: A disputed liability car accident claim in Ireland arises when the other driver or their insurer denies responsibility for the collision. The Injuries Resolution Board (IRB) (Updated 2025) [1] cannot decide fault. It only assesses compensation. You can still succeed, but you'll need objective evidence and may need court proceedings or, since December 2024, IRB mediation (December 2024) [2].
Quick summary: Disputed liability = IRB can't assess → Authorisation issued → 6 months to start court OR try December 2024 mediation (avg 3 months vs years). Objective evidence (dashcam, CCTV, telematics) beats conflicting accounts. Sources: IRB (2025) [1]; Gov.ie (Dec 2024) [2]; Civil Liability Act 1961 s.34 [3].
Note for UK readers: Irish personal injury rules differ from England and Wales. Ireland uses the IRB (not the UK's court-first approach), applies the 2021 Personal Injuries Guidelines (not the UK Judicial College Guidelines), and has a 2-year limitation period (not 3 years). This page covers Irish law only.
Contents
What's New: December 2024 Mediation Option
Since 12 December 2024, the IRB offers mediation for motor liability claims, according to the Department of Enterprise (December 2024) [2]. This is brand new for car accidents. Both parties must consent, but if they do, cases resolve in an average of 3 months rather than the 2-5 years typical for court litigation. It's free for claimants and can agree liability splits (50/50, 75/25) that the standard IRB assessment can't handle.
Key finding: IRB data shows standard assessments take 11.2 months on average (IRB Annual Reports (2024) [4]), while mediation resolves in roughly 3 months. That's an 8-month saving for cases where both sides agree to try it.
At a Glance: Key Facts
What Disputed Liability Means for Your Claim
A disputed liability claim isn't a dead end. When the other side denies fault, your injury compensation claim can still succeed. You can claim compensation even if the other driver says you caused the accident. You cannot proceed through standard IRB assessment if the respondent refuses consent.
The IRB—formerly the Personal Injuries Assessment Board (PIAB) until 2023—has a limited role here. It assesses how much compensation is appropriate, according to injuries.ie (Updated 2025) [1]. It doesn't decide who caused the accident. If the respondent's insurer ticks "No" to consent during the 90-day window, the IRB can't proceed with assessment. It issues an Authorisation instead.
A common mistake we see: people assume the IRB will sort out the liability question. It won't. What the process looks like on paper versus reality differs here. In practice, if fault is genuinely contested, you're heading to court or mediation. From what we see, perhaps 30-40% of disputed cases settle before reaching a courtroom, but you need to prepare as if yours won't.
The December 2024 alternative: Before going to court, consider whether mediation might work. The IRB now offers this for motor claims per injuries.ie Mediation (2025) [5]. Both sides must agree to try it. If they do, a neutral mediator helps negotiate both liability and compensation together. You could have a binding settlement in 3 months instead of waiting years.
Disputed vs Undisputed: Key Differences
Undisputed Liability
- Other side admits fault
- IRB assesses compensation
- Typical timeline: 9-15 months
- No court needed if you accept
Disputed Liability
- Other side denies fault
- IRB issues Authorisation only
- Typical timeline: 2-4 years
- Court or mediation required
The core difference: In undisputed claims, you're negotiating how much. In disputed claims, you're fighting over whether you get anything at all.
Evidence That Wins Disputed Cases
Irish courts now place far more weight on objective evidence than conflicting driver accounts. In James v Halliday [2024] IEHC 281, the High Court preferred engineering data and dashcam footage over testimony from either driver, as noted by Courts.ie (2024) [6]. The hierarchy is clear: video and data beat words.
Evidence ranked by court weight:
| Evidence Type | Court Weight | Why It Matters |
|---|---|---|
| Dashcam/CCTV footage | High (gold standard) | Shows exactly what happened. Resolves "he said/she said" disputes. |
| Telematics/GPS data | High | Proves speed, braking, location with numerical precision. |
| Independent witnesses | Medium-High | Non-connected third parties. Secure statements while memory is fresh. |
| Garda report | Medium | Useful for basic facts but NOT determinative of civil liability. |
| Driver statements | Low-Medium | Both sides are interested parties. Often dismissed without corroboration. |
One hidden complexity: Gardaí arriving at the scene typically sketch the position of vehicles post-collision, not at the moment of impact. That sketch is an interpretation, not a photograph. If it places your car incorrectly, it can prejudice your claim. You can ask a solicitor to write to the Superintendent to place a correction on file with supporting photos or video, per Garda Victim Services (2025) [7].
Your Disclosure Obligations in Disputed Cases
If your disputed claim goes to court, you must disclose all relevant evidence to the other side. This includes evidence that hurts your case. You cannot cherry-pick what to share. If your dashcam shows you were speeding, or your phone records show you were texting, you must disclose it under RSC Order 31 (Discovery) [12].
Courts take a dim view of selective disclosure. In practice, this means thinking carefully before preserving evidence. If you save dashcam footage, you keep all of it. You can NOT delete the unfavourable parts and produce only what helps. Solicitors advise reviewing all evidence early so there are no surprises during litigation.
Evidence Preservation: Critical Time Windows
CCTV footage gets overwritten. This is not the same as evidence being lost in a fire. The key difference: overwriting happens on a predictable schedule you can beat if you act fast. Witnesses forget. Dashcam files get deleted. The first 48 hours after an accident are when evidence is most recoverable and most at risk.
CCTV retention by premises type (Ireland):
| Location Type | Typical Retention | Action Window |
|---|---|---|
| Petrol stations | Often 7-14 days | Request within 48 hours |
| Small retail/shops | Often 14-28 days | Request within 1 week |
| Large retailers | Often 28-30 days | Request within 2 weeks |
| Banks/financial | Up to 90 days | Still urgent—request early |
Evidence Preservation Checklist
First 24-48 hours:
- Request CCTV from nearby premises in writing. Include date, time, location.
- Save dashcam footage to a separate device. Don't rely on loop recording.
- Get witness names and phone numbers at the scene.
- Photograph vehicles, damage, road markings, weather conditions.
First 7 days:
- Obtain Garda PULSE reference number.
- See your GP and link injuries to the accident in writing.
- Follow up on CCTV requests if no response.
- Record witness statements while memory is fresh.
Within 30 days:
- Notify your insurer (most policies require this as a condition).
- Send a Section 8 letter of claim if you have sufficient evidence.
- Ensure any CCTV is preserved before the typical 28-30 day overwrite cycle.
CCTV Preservation Request Letter Template
Adapt this template for your circumstances. Send by email and keep proof of delivery.
Tip: If the business doesn't respond within 7 days, follow up in writing and note you may escalate to the Data Protection Commission [8].
The Disputed Liability Timeline
When liability is disputed, the process stretches because insurers investigate, engineer reports take time, and court lists are long. While the official timeline is 90 days for consent, we typically see insurers use nearly all of that time when they're leaning toward a dispute. Allow 4-6 months from IRB application to knowing whether you're court-bound.
You do NOT need to wait for the full 90 days before preparing your evidence. You can start gathering witness statements, requesting CCTV, and photographing the scene immediately. In most cases, the earlier you act, the stronger your position.
Typical pathway:
- IRB Application: You submit Form A, medical report, and fee per IRB Claims Guidance (2025) [1]. The IRB notifies the respondent's insurer.
- 90-Day Consent Period: The insurer has 90 days to consent to assessment or refuse. During this time, they may commission engineer reports and review evidence.
- Consent Refused: If the insurer disputes liability, the IRB issues an Authorisation. This doesn't mean you've lost—it means the IRB can't help with this part.
- 6 Months to Act: From the Authorisation date, you have 6 months to issue court proceedings per PIAB Act 2003 s.50 [9]. The limitation clock that paused during IRB involvement resumes.
- Court or Mediation: Since December 2024, you can try IRB mediation before court. If both sides agree and settle, the case ends. If not, litigation continues.
Burden of Proof and Realistic Timelines
Who proves what: In a disputed liability claim, you (the claimant) carry the burden of proof. You must prove, on the balance of probabilities, that the other driver was negligent and that their negligence caused your injuries. "Balance of probabilities" means more likely than not. It's NOT beyond reasonable doubt (that's criminal law).
Realistic court wait times: If your disputed claim goes to trial, expect 18-24 months in the Circuit Court (claims up to €75,000 general damages) or 2-3 years in the High Court (claims above €75,000). Dublin wait times are typically longer than regional courts. These timelines start from when you issue proceedings, not from the accident date.
How Long Does a Disputed Liability Claim Take?
Short answer: 2-4 years from accident to resolution. This is significantly longer than undisputed claims (typically 9-15 months).
Disputed Liability Timeline Breakdown:
| Stage | Duration | Cumulative |
|---|---|---|
| Evidence gathering + medical treatment | 3-6 months | 6 months |
| IRB application + 90-day consent period | 4-6 months | 12 months |
| Authorisation issued → court proceedings filed | 1-3 months | 15 months |
| Pre-trial (discovery, mediation attempts, expert reports) | 6-12 months | 24 months |
| Court wait time (Circuit Court) | 12-18 months | 36-42 months |
Total typical range: 2-4 years. High Court claims or complex multi-party disputes can take 4-5+ years.
Faster alternatives:
- December 2024 mediation: If both sides consent, average resolution is 3 months from mediation start. Total timeline could be 12-18 months.
- Pre-litigation settlement: Some disputed cases settle during the 6-month post-Authorisation window. If the insurer's opening denial was tactical rather than genuine, settlement can happen in 12-18 months.
The timeline is NOT fixed. Strong early evidence (dashcam, CCTV, independent witnesses) often accelerates resolution because insurers prefer settlement over losing at trial.
How Insurers Investigate During the 90 Days
The 90-day consent period isn't just waiting time for insurers. It's when they build their defence. Understanding what happens on their side helps you prepare. In our experience, insurers typically begin their investigation within 2-3 weeks of receiving IRB notification.
What insurers do during the consent period:
| Activity | Timing | What They're Looking For |
|---|---|---|
| Engineer report commissioned | Weeks 2-4 | Vehicle damage patterns, impact angles, speed estimates (Delta V calculations) |
| CCTV requests sent | Weeks 1-3 | Footage from nearby premises. They're doing the same thing you should be doing. |
| Witness interviews | Weeks 3-6 | Independent witnesses, passengers, anyone mentioned in Garda report |
| Social media review | Throughout | Public posts showing physical activity inconsistent with claimed injuries |
| Surveillance (high-value claims) | Weeks 4-8 | Video evidence of claimant's actual mobility and daily activities |
Social media checks are now routine. Insurers and their solicitors review public Facebook, Instagram, and LinkedIn profiles. A photo of you hiking or at a gym can undermine a claim for severe back injuries. This is NOT about hiding the truth. It's about not creating misleading impressions. If you're having a good day and post about it, that single moment can be taken out of context.
Private investigators are commissioned in disputed claims above roughly €50,000, or where fraud indicators exist. They conduct surveillance, sometimes for weeks. Footage of you carrying shopping bags when you've claimed you can't lift anything will be played in court. The Civil Liability and Courts Act 2004, Section 26 [13] allows courts to dismiss claims entirely and award costs against claimants who give false or misleading evidence.
Split Liability: When Both Drivers Share Fault
Irish courts often find both drivers contributed to an accident. Section 34 of the Civil Liability Act 1961 [3] allows them to reduce your compensation by whatever percentage they consider "just and equitable."
You can receive compensation even if you were partly at fault. You cannot receive full compensation if the court finds you contributed to the accident. A 50/50 split doesn't mean you get nothing—it means you receive half of what your injuries would otherwise be worth.
Common contributory negligence findings:
| Situation | Typical Reduction | Source |
|---|---|---|
| Not wearing seatbelt (injuries preventable) | 25% | O'Sullivan v Ryan [2005] IEHC 18 |
| Not wearing seatbelt (injuries less severe) | 10-15% | Power v Malone [2023] IEHC 366 |
| Passenger knew driver was drunk | ~20% | Case law pattern |
| Both drivers failing look-out duty | 50/50 | Maher v Moriarty [2025] IEHC 20 |
Split Liability Calculator: What Your Claim Is Actually Worth
Enter your estimated full claim value and liability split to see your actual recovery
If the court finds you 25% at fault:
€22,500
You recover 75% of the full value
Courts look at two factors: blameworthiness and causative potency. Driving under the speed limit doesn't automatically mean you weren't at fault. In James v Halliday [2024] IEHC 281, a driver within the limit was still found 25% liable for not adapting to wet, winding conditions (Courts.ie [6]).
What Happens If You Lose on Liability
Split liability means you get something. A complete loss means you get nothing. It's important to understand the difference.
If the court finds the other driver 0% liable:
- You receive no compensation for your injuries.
- You may be ordered to pay the defendant's legal costs (often €20,000-€50,000+ depending on complexity).
- Your own legal costs remain your responsibility unless you had a "no win no fee" arrangement.
- Your motor insurer may cover your vehicle damage under comprehensive cover, but you'll pay the excess and face premium increases.
If the other driver counterclaims and YOU are found liable:
- You may face a judgment against you for their injuries and losses.
- Your motor insurer typically defends this and pays any judgment (that's what third-party cover is for).
- Your premiums will increase significantly.
This is NOT the same as a split liability finding. In split liability, you still recover something. In a complete loss, you recover nothing and may owe substantial costs. This reality is why realistic evidence assessment before trial matters so much.
Should You Accept a Split Liability Offer?
Insurers sometimes offer to settle on a split basis. This can be reasonable or a tactic to pay less. The decision isn't just about money—it's about evidence strength, time, and stress. In settlement discussions, insurers often open with an aggressive liability stance. A denial is frequently an opening negotiation position, not a final verdict. It depends on your specific circumstances, but there are patterns worth knowing.
Consider accepting when:
- Your evidence is genuinely ambiguous (no video, conflicting witnesses).
- The offer falls within the Personal Injuries Guidelines (2021) [10] range for your injuries at the offered percentage.
- A quick resolution matters more than maximising the award.
- Legal advice confirms the offer reflects realistic litigation risk.
Push back or refuse when:
- You have dashcam footage or independent witnesses supporting your version.
- The offer is significantly below guideline ranges even after the split.
- The insurer's liability argument doesn't match the physical evidence.
- You're being pressured to decide quickly without seeing their evidence.
The Section 17 Lodgement Trap
Once court proceedings begin, the defendant insurer can make a formal "lodgement" under RSC Order 22 (Lodgement) [14]. This is a tactical move with real consequences. They lodge a sum with the court, say €25,000. If you reject it, proceed to trial, and the judge awards you €25,000 or less, you typically pay the defendant's legal costs from the date of the lodgement.
You CAN reject a lodgement and proceed to trial. You CANNOT avoid costs consequences if you fail to beat it. Those costs can be substantial, potentially wiping out most of your award. This is why realistic case valuation matters before rejecting any formal offer. It's also why mediation, which avoids this risk, has become more attractive since December 2024.
Practical note: Lodgements are sealed from the judge until after judgment. The judge decides your case without knowing what was offered. Only then is the lodgement revealed to determine costs.
What to Do Right Now
If your accident just happened: Secure evidence today. Request CCTV before it's overwritten. Save dashcam footage. Get witness details. See a doctor. Check our evidence checklist for the full list.
If the other side has denied liability: Don't assume it's over. Review what evidence you have. Consider whether mediation might work before committing to court. Get specific legal advice on your evidence strength.
If you've received an Authorisation from the IRB: You have 6 months to issue proceedings. Don't wait until month 5. Court preparation takes time. Delay weakens your case.
Free initial assessment: If you're unsure where your disputed liability claim stands, we can review your situation and explain your options. Call 01 903 6408 or use our contact form.
Common Questions
Can the IRB decide who was at fault?
No. The IRB assesses compensation amounts only. It has no power to determine liability or fault.
- IRB = compensation assessment only.
- Disputed liability = Authorisation issued.
- Fault decided by court (or agreed via mediation).
Why it matters: Many people expect the IRB to resolve liability disputes. It can't, so plan for court or mediation from the start if fault is contested.
Next step: IRB process [1] • Mediation option [5]
How does the December 2024 mediation service work?
Both parties must consent. If they do, an independent mediator helps negotiate a settlement covering both liability and compensation. Cases resolve in an average of 3 months.
- Free for claimants.
- Can agree split liability (e.g., 50/50, 75/25).
- Binding after 10-day cooling-off period.
Why it matters: It's a faster, cheaper alternative to court when liability is disputed but negotiable.
Next step: Gov.ie announcement [2] • IRB mediation [5]
How long does a disputed liability claim take in Ireland?
Typically 2-4 years from accident to resolution. This is much longer than undisputed claims (9-15 months) because the court must decide who was at fault.
- IRB application + consent period: 4-6 months.
- Pre-trial preparation: 6-12 months.
- Court waiting list: 12-24 months (Circuit Court).
- December 2024 mediation can reduce total to 12-18 months.
Why it matters: Strong early evidence often speeds up resolution. Insurers settle faster when they expect to lose at trial.
Next step: Full timeline breakdown
How quickly do I need to request CCTV footage?
Within 48-72 hours for best results. Many businesses overwrite CCTV every 7-30 days. Petrol stations often retain only 7-14 days.
- Identify premises with cameras covering the scene.
- Send written request with date/time/location.
- Follow up within 1 week if no response.
Why it matters: Once footage is overwritten, it's gone forever. Early action is essential.
Next step: DPC CCTV guidance [8]
What happens if the court finds I was partly at fault?
Your compensation is reduced by your percentage of fault. If you're found 25% responsible, you receive 75% of your assessed damages under Section 34 of the Civil Liability Act 1961.
- 50/50 = you receive half.
- 75/25 in your favour = you receive 75%.
- Even 10% fault reduces your award.
Why it matters: Split liability doesn't mean zero compensation. Many successful claims involve some shared fault.
Next step: Civil Liability Act s.34 [3]
What if I lose my disputed liability claim completely?
You receive nothing and may owe costs. If the court finds the other driver 0% liable, you get no compensation and typically pay their legal costs from a certain point in proceedings.
- No compensation for injuries or losses.
- Defendant's costs can be €20,000-€50,000+.
- Your own legal costs may also apply.
Why it matters: This is why realistic evidence assessment matters before going to trial. A weak case that loses costs more than settling early.
Next step: Get a candid assessment of your evidence strength from a solicitor before committing to trial.
How long do I have to take court action after an IRB Authorisation?
6 months from the Authorisation date. The limitation clock, which paused during IRB involvement, resumes. Missing this window can bar your claim entirely.
- 6-month deadline is strict.
- Court preparation takes time—don't wait.
- Mediation doesn't extend this deadline.
Why it matters: Courts don't extend time limits just because you were considering options.
Next step: PIAB Act s.50 [9] • Citizens Information [11]
Does the Garda report decide liability?
No. The Garda abstract records basic facts and the attending officer's observations. It's useful evidence but not determinative of civil liability. Courts can and do reach different conclusions.
- Garda sketch is an interpretation, not a photograph.
- Errors can be corrected via statement to Superintendent.
- Civil liability is a separate legal question.
Why it matters: Don't assume you've lost because a Garda report seems unfavourable. It's not the final word.
Next step: Garda Victim Services [7]
Can telematics data be used as evidence?
Yes, and increasingly so. Modern black-box insurance policies and vehicle systems record speed, braking, and location. This data can prove or disprove speeding allegations.
- Request data from your insurer or vehicle manufacturer.
- Preserve it early (some systems overwrite).
- Disclosure obligations apply (favourable and adverse).
Why it matters: Telematics can win cases where testimony conflicts. Courts have accepted it as reliable objective evidence.
Next step: Contact your insurer to preserve telematics data.
When do insurers commission engineer reports?
Almost always in disputed liability cases. Engineers examine vehicle damage, calculate impact forces (Delta V), and assess whether collision mechanics match claimed injuries.
- Typically commissioned within the 90-day consent period.
- Examines crush depth, damage patterns, repair costs.
- Common in low-velocity impact (LVI) defences.
Why it matters: Understanding the other side's evidence strategy helps you prepare. You may need your own engineering evidence in response.
Next step: Discuss engineering evidence needs with your solicitor.
What is a lodgement and why does it matter?
A lodgement is a formal court payment by the defendant. If you reject it, go to trial, and win less than or equal to the lodged amount, you typically pay their costs from the lodgement date.
- Lodgement is sealed from the judge until after judgment.
- Costs consequences can wipe out most of your award.
- Realistic case valuation is essential before rejecting.
Why it matters: This is a tactical tool insurers use to pressure settlement. Understanding it helps you make informed decisions about whether to proceed to trial.
Next step: RSC Order 22 [14]
Additional Resources
IRB Motor Mediation Announcement (December 2024)
References
References
All sources accessed January 2026 unless otherwise noted. Irish Statute Book citations are to official published versions.
- Injuries Resolution Board, "The Claims Process" (2025). injuries.ie
- Department of Enterprise, Trade and Employment, "Minister Burke announces commencement of the Injuries Resolution Board's mediation service for motor liability personal injury claims" (12 December 2024). enterprise.gov.ie
- Civil Liability Act 1961, Section 34. irishstatutebook.ie
- Injuries Resolution Board, Annual Reports and Award Values. injuries.ie
- Injuries Resolution Board, "Mediation" (2025). injuries.ie
- Courts Service, Judgments Database. James v Halliday [2024] IEHC 281; Maher v Moriarty [2025] IEHC 20. courts.ie
- An Garda Síochána, Victim Services. garda.ie
- Data Protection Commission, "CCTV Guidance for Data Controllers" (November 2023). dataprotection.ie
- Personal Injuries Assessment Board Act 2003, Section 50. irishstatutebook.ie
- Judicial Council, Personal Injuries Guidelines (2021). judicialcouncil.ie
- Citizens Information, "Injuries Resolution Board." citizensinformation.ie
- Courts Service, Rules of the Superior Courts, Order 31 (Discovery). courts.ie
- Civil Liability and Courts Act 2004, Section 26 (False or Misleading Evidence). irishstatutebook.ie
- Courts Service, Rules of the Superior Courts, Order 22 (Lodgement, Payment and Tender). courts.ie
Disclaimer: This information is for educational purposes only and does not constitute legal advice. Every case is different and outcomes vary. Consult a qualified solicitor for advice specific to your situation.
Gary Matthews Solicitors
Medical negligence solicitors, Dublin
We help people every day of the week (weekends and bank holidays included) that have either been injured or harmed as a result of an accident or have suffered from negligence or malpractice.
Contact us at our Dublin office to get started with your claim today
