What happens in a car accident lawsuit, from complaint to verdict

A car accident lawsuit begins when the injured person files a complaint and has it served on the driver they blame. The driver then has a short, fixed window to respond. After that come months of document exchange and sworn questioning called discovery, one or more rounds of settlement talks, and, only if nothing settles, a trial. The great majority of cases never reach a verdict: in a Triple-I and Casualty Actuarial Society analysis of federal court data for 2015 through 2024, about 52 percent of disposed motor vehicle tort cases settled and only about 7 percent ended in a judgment (Triple-I and CAS analysis).

This article follows one case from the first paper to the last, for both people who might be on the receiving end of a summons and people thinking about filing. The deadlines and procedures below vary by state and by court, and where a number is given it is labeled with the rule it comes from.

The stages at a glance

Not every case touches every row. Many end at "settlement efforts," and some end at the response stage with a dismissal or a default.

Before anyone files: the claim that did not settle

Most lawsuits start as ordinary insurance claims. The injured person, or their lawyer, sends the at-fault driver's insurer a demand letter with medical bills, lost wages and a number. The insurer investigates, makes an offer, and the two sides trade figures. If they stall, or if the claimant believes the insurer is undervaluing a serious injury, a lawsuit is the next step.

Two things push a claimant to file even when talks are still alive. The first is the statute of limitations, the deadline after which a court will refuse to hear the case. It differs by state and by type of claim, and the shortest ones are measured in a small number of years, so a claimant cannot wait for negotiations to run their course (see statutes of limitations for car accident claims for how it is calculated). The second is leverage: an insurer that is not moving often reprices a claim once a judge and a trial date are in the picture.

Filing is not an accusation that the insurer acted in bad faith. It is the only way to get a binding decision on fault and damages if the parties cannot agree.

The complaint and service

The case officially exists when the plaintiff's lawyer files a complaint with the court. The complaint names the parties, describes the crash, says why the defendant is legally responsible (usually negligence: a duty of care, a breach, causation and damages), and asks for money.

The defendant must then be formally notified. A court officer or a private process server hands the defendant the summons and the complaint, or serves them by another method the state allows. Until service is complete, the defendant's response clock does not run. Some courts let a defendant sign a waiver of formal service in exchange for extra time; in federal court, a defendant who waives service has 60 days from the date the request was sent to answer (Federal Rule of Civil Procedure 12).

How long you have to respond

The response deadline is short and it is set by the court where the case is filed, not by the insurer:

• Federal court: an answer is due 21 days after service of the summons and complaint (Rule 12(a)(1)(A)(i)).
• California: the Judicial Council's self-help site says a defendant typically has 30 days from the day they are served to respond (California Courts self-help).
• Texas: the citation tells the defendant to answer by 10:00 a.m. on the Monday next after the expiration of 20 days after service, under Rule 99(b) of the Texas Rules of Civil Procedure (Rule 99, Texas Rules Project).

Other states have their own periods, and the method of service can change the count. The summons itself normally states the deadline; read it and calendar it the day it arrives.

If no response is filed in time, the plaintiff can ask the judge for a default, and then a default judgment, without hearing from you. California's self-help site notes that the judgment says what you owe and that the plaintiff can use it to try to collect, though a default can sometimes be set aside for a good reason, such as never having been properly served (California Courts self-help). Setting one aside is expensive and uncertain. Ignoring a summons because "the insurance company will handle it" is one of the most common ways an insured turns a covered claim into a very uncomfortable one.

If you are served: a step-by-step

1. Note the date and time you received the papers and keep the envelope, the summons and every page of the complaint. The deadline starts from service.
2. Send the entire packet to your insurer the same day, by the fastest method it accepts (the claims portal, email to the adjuster, and a follow-up call). Ask for written confirmation that a defense lawyer has been assigned.
3. Do not talk to the plaintiff or their lawyer about the facts. Refer them to your insurer. Do not post about the crash.
4. Check the policy declarations for your liability limits. If the complaint seeks more than those limits, tell the insurer in writing that you are worried about exposure above the limit (see excess judgments: when a verdict is larger than your policy limit).
5. Respond to the defense lawyer's requests quickly: phone records, repair estimates, photos, names of passengers, any prior claims.
6. If a week passes with no lawyer assigned, call the insurer again and, if necessary, retain your own lawyer to file something before the deadline. A late answer can cost you the case.

The answer and the first fights

The answer responds paragraph by paragraph to the complaint: admit, deny, or say you lack knowledge. It also raises defenses the defendant does not want to lose by staying quiet. The common ones in crash cases are that the plaintiff was partly at fault (comparative negligence rules differ sharply by state), that the plaintiff failed to wear a seat belt or to treat reasonably, that the injuries came from something else, and that the claim was filed too late.

Instead of answering, the defense may file a motion attacking the complaint, for example arguing that service was defective, that the court has no jurisdiction, or that the complaint states no valid claim. Those motions rarely end a straightforward rear-end collision case, but they can narrow it, strip out improper claims (such as a punitive damages demand on ordinary negligence facts) or catch a late filing.

Who defends you: the insurer's lawyer and your own

In a covered liability suit, the insurer has a duty to defend: it must hire a lawyer, pay for the defense and run the case, and the policy usually gives it control over settlement. The defense lawyer's client is you, the insured, even though the insurer pays and supervises the bills. The details of that duty are in sued after a crash: how your insurer's duty to defend works.

There are three situations where you should seriously consider a lawyer of your own, usually at your own expense:

• The demand exceeds your limits. If the plaintiff seeks more than your policy limit, the part above it is your exposure, and your interests and the insurer's can diverge. Personal counsel can send the insurer a written request to settle within limits and can advise on the consequences.
• The insurer reserves its rights. If the insurer says it will defend but may later deny coverage (for an exclusion, a late notice, an unlisted driver), you need advice from someone whose only job is your position.
• Punitive damages are claimed. Whether insurance can pay them depends on the state and the policy (see punitive damages and car insurance: what policies will pay).

Personal counsel does not take over the case from the defense lawyer. Think of an extra set of eyes that watches settlement opportunities and your downside. A licensed attorney in your state is the right person for the specifics, and your state insurance department can tell you how its regulations treat reservation-of-rights letters.

Discovery: where most of the time goes

Discovery is the formal exchange of information. It is the longest and most expensive phase, and it is where both sides learn how strong the other's case is. The main tools:

State courts set their own limits, and many use the federal numbers only as a model. Treat the table as an illustration of how structured the process is.

What each side is trying to learn

For the plaintiff, discovery builds the damages case: bills, records, a treating doctor's opinion on cause and future care, wage loss proof. For the defense, it tests every link: the pre-crash medical history, gaps in treatment, whether the plaintiff's own account matches the photos, the car's recorded data and, increasingly, social media (see social media and surveillance in injury claim investigations).

A deposition is often the most consequential event in the case for the person being questioned. Defense lawyers prepare their clients for it: answer only the question asked, do not guess, and do not volunteer. A plaintiff's testimony that contradicts earlier statements to an adjuster can reduce a claim's value quickly.

Why discovery takes so long

Several clocks run at once. The plaintiff may still be treating, and a lawyer will rarely settle before knowing whether the injury has stabilized. Records arrive slowly from providers, doctors' depositions are scheduled around their calendars, and a crowded docket can push court deadlines back. Any "typical" duration is therefore a statement about one court, not about lawsuits in general, and the sources reviewed for this article do not support a single national figure. If the timeline matters to you, ask the lawyer what the court's trial calendar looks like.

Mediation, settlement conferences and offers

Most settlements happen after discovery has revealed the weak spots but before trial costs are spent. Three formal routes are common:

• Mediation. A neutral person (often a retired judge or experienced lawyer) shuttles between the sides for a day or less. The mediator cannot decide anything; the parties can leave. Many courts order mediation before they will schedule a trial. For the broader picture of mediation and arbitration in claim disputes, see arbitration and mediation in auto insurance disputes.
• Judicial settlement conference. A judge, usually not the trial judge, gives each side a candid read of the case's strengths and risks.
• Formal offers. In federal court, a defending party may serve an offer of judgment at least 14 days before trial; if the plaintiff rejects it and then wins a judgment that is not more favorable, the plaintiff must pay the costs incurred after the offer (Rule 68). Many states have comparable rules, with different consequences, so a lawyer should explain the local version.

The settlement is written down and the plaintiff signs a release. The paperwork, the liens that come out of the money (medical providers, health insurers, Medicare) and the timing of the check are covered in Settlement paperwork: releases, liens and Medicare reimbursement. Before signing, the claimant should know the full amount of every lien, because those are paid from the settlement.

Motions, pretrial and trial

After discovery, the defense may ask for summary judgment, a ruling that no facts are genuinely disputed and the law favors one side. In a crash case it is most often used to knock out a defendant who was not driving, a claim that exceeds what the evidence supports, or a plaintiff's injury theory without expert backing. Both sides also file motions to exclude evidence, for example an expert opinion or a medical bill that is not tied to the crash.

At trial, the sequence is predictable: jury selection, opening statements, the plaintiff's witnesses, the defense's witnesses, closing arguments, instructions from the judge, and deliberation. The jury decides fault and then damages, and in comparative negligence states it assigns a percentage of fault to each driver.

What do the numbers show? Bureau of Justice Statistics (BJS) data are old but still the best public look at trial outcomes:

• In 2005, trials accounted for about 3 percent of tort, contract and real property case dispositions in general jurisdiction courts that reported both trial and non-trial totals, and motor vehicle accident cases were the most common type of civil trial at 35 percent (BJS, Civil Bench and Jury Trials in State Courts, 2005).
• In the same report, the median award to a plaintiff winner in a motor vehicle accident trial was $15,000, and 40 percent of those winners received $10,000 or less.
• BJS's survey of the 75 largest counties for 2001 found plaintiffs won about 61 percent of automobile tort trials, a higher rate than in most other case types (BJS, Tort Trials and Verdicts in Large Counties, 2001).

These are 2001 and 2005 figures from a time when injury awards in typical car cases were small; they do not describe 2026 verdicts and should not be used to predict one. What they do show is that the cases reaching a jury are a small slice of all claims, and that in that slice plaintiffs won more often than not.

After a verdict, either side can ask the judge to set it aside or reduce it, and can appeal. An appeal adds time. If the verdict exceeds the defendant's policy limit, the problem described in excess judgments: when a verdict is larger than your policy limit begins.

Who pays for what

Plaintiff's side: contingency fees and costs

Most injury plaintiffs hire a lawyer on a contingent fee, meaning the lawyer is paid a percentage only if there is a recovery. The American Bar Association's Model Rule 1.5(c) requires a contingent-fee agreement to be in writing and signed, to say how the fee is figured, and to clearly notify the client of any expenses the client will be liable for; Cornell's Legal Information Institute describes about one-third of the recovery as typical in personal injury cases (Cornell LII, contingent fee). Specific percentages, sliding scales and caps are set by contract and sometimes by state rules.

The fee is not the only cost. Filing fees, deposition transcripts, medical records, expert witnesses and mediators add up, and the agreement should say whether the percentage is taken before or after those costs and whether the client owes them if the case is lost.

Defendant's side: the insurer pays the defense

For a covered claim, the insurer pays the defense lawyer and the usual litigation costs. In most personal auto policies those defense costs are paid in addition to the liability limit rather than eroding it, but this is a policy-wording question; read the "supplementary payments" or "defense" provisions of your own policy or ask your agent.

A worked example (hypothetical)

Say a plaintiff settles a rear-end injury suit for $90,000 after mediation. The contingent fee is one-third, so $30,000. The case costs were $6,000 for records, depositions and a medical expert. A hospital lien and the plaintiff's health plan reimbursement claim total $15,000. If the fee is figured on the gross settlement and costs are then deducted:

If the agreement instead figured the fee after costs, the fee would be one-third of $84,000, or $28,000, and the plaintiff would net $41,000. Liens can sometimes be negotiated down, which is why plaintiffs' lawyers handle them before the check is released. These numbers are invented to show the arithmetic, not typical outcomes.

Common questions

Can I be sued even though my insurer already paid the other driver?

Yes, if the payment did not include a signed release, or if the injured person claims more than was paid. A payment for a car repair, for example, does not release a bodily injury claim. If your insurer settled and obtained a release, the release should end the matter for the claims it covers.

What if the person suing me has no lawyer?

The process is the same. The summons deadline is the same, and you should still send it to your insurer. Unrepresented plaintiffs sometimes file in small claims court, which has simpler procedures and lower dollar limits (see small claims court for car accident damages: limits and evidence).

Does a lawsuit always mean a trial?

No. Filing starts a process that is built to produce settlements. The Triple-I and CAS federal data above, and the BJS finding that trials were roughly 3 percent of reported dispositions in 2005, both point the same way.

Key takeaways

• The response deadline in a car accident suit is short (21 days in federal court, 30 days in California for typical service, a Monday-based formula in Texas) and a missed deadline can lead to a default judgment.
• Send the summons to your insurer the day you receive it and confirm in writing that a defense lawyer is assigned.
• Discovery, not trial, is where most of the work and most of the cost occur, and a case rarely settles until the injury and the evidence are well understood.
• Trials are rare: in federal data for 2015 through 2024, about 7 percent of disposed motor vehicle tort cases ended in a judgment.
• If the claim exceeds your limits, or the insurer reserves its rights, a personal attorney's advice is worth considering.