Rear-Ended? What to Do, Who's at Fault & Hidden Damage | Otto

Otto Accident Guide · 2026

Rear-Ended?
What to Do Next

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So what happens when you're rear-ended? In most cases the driver behind you is treated as at fault, and their insurer pays for your repair. The two things people get wrong: assuming a bumper that looks fine is fine, and assuming they're not hurt because nothing hurt at the scene. Below: the first steps, how fault works, the damage you can't see, and what to watch for in the days after.

Otto Research Team

October 2026

Updated Quarterly

General Information — Not Legal Advice

The short answer

The rear driver is usually at fault — most states presume they were following too closely.
Their insurer pays for your repair and, usually, a rental. You can also use your own collision coverage and let your insurer recover it.
Low-speed hits hide damage. The plastic bumper cover flexes back; the absorber, bar and sensors behind it often don't.
Neck and back symptoms often start a day or two later. If anything feels off, get checked and keep the record.

Right After
You're Hit

Six steps. The evidence that matters most in a rear-end crash is the evidence that disappears first.

Stay put and check everyone

Hazards on, move out of traffic only if it's safe. Call 911 if anyone is hurt — including the people in the other car.

Photograph both cars where they stopped

The position of the cars tells the story. Shoot their front end too — their damage confirms how hard the hit was.

Exchange information

Name, phone, license, plate and insurance. Photograph their insurance card instead of copying it by hand.

Don't apologize or guess

Even "I stopped kind of suddenly" can be used to argue shared fault. Describe what happened, not why.

Get a police report number

It's the strongest single document on fault. If officers don't come, you can usually file one yourself — see our police report guide.

Ask for dashcam or nearby footage

Your own, theirs, or a business facing the road. Many systems overwrite within days, so ask the same day.

Who's at Fault
When You're Rear-Ended?

Usually the driver behind. Every driver is expected to leave enough room to stop — but the presumption can be challenged.

Usually the rear driver

The default in most states

Following too closely
Distracted or on the phone
Speeding for conditions
Pushed into you in a chain reaction — the car that started it

When fault can shift

What the other side may argue

You reversed into them
You cut in front and braked
Brake lights not working
A sudden, unexplained stop ("brake-checking")

⚠️ Stuck in the middle of a chain reaction?

If you were pushed into the car ahead, the driver who hit you is usually responsible for both impacts. Photograph your front and rear damage separately — two sets of damage from two hits is exactly what an adjuster will ask about.

The Damage
You Can't See

A bumper cover is plastic. It's built to flex and pop back — which is why a low-speed hit can look like nothing and still need real repair.

Energy absorber

Foam or plastic behind the cover

It crushes to soak up the impact, and it doesn't spring back. Once crushed, it has to be replaced.

Reinforcement bar

The metal beam behind it

The part that actually protects the car. A bent bar can't be seen with the cover on.

Sensors and camera

Parking, blind-spot, backup

Even when they still work, a knocked bracket can leave them misaligned. Blind-spot radar may need recalibration after a rear repair.

Trunk floor and rear panel

Where harder hits go next

Signs: a trunk lid that won't line up or latch, or uneven gaps around the taillights. That points past the bumper — see what counts as structural damage.

See what the repair really involves.

Upload a photo of the rear of your car. Otto returns a free repair cost range in about 30 seconds — independent of any insurer.

Get My Free Estimate →

Repair prices for bumpers specifically — cover-only jobs versus full replacements — are broken down in our bumper repair cost guide.

Symptoms That
Show Up Later

Rear-end crashes snap the head forward and back. Adrenaline hides it at the scene, so the first signs often come a day or two later.

Most common

Neck pain or stiffness

Often worse the next morning, with less range when you turn your head. This is what people call whiplash.

Often missed

Headaches and dizziness

Starting at the base of the skull, or with trouble focusing. Get checked promptly — it can also signal a concussion.

Can travel

Shoulder, back or arm symptoms

Pain between the shoulder blades, or tingling down an arm. Tell the doctor it followed a rear-end crash.

Why timing matters

A record made close to the crash

A visit within days ties symptoms to the accident. Weeks of waiting is the gap insurers point to.

⚠️ Someone was hurt?

Injury claims run on different rules and deadlines than the repair. Our guides cover when an attorney consultation is worth it and how long you have to file.

Whose Insurance
Pays?

You have two routes. Most people use the first; the second is faster when the other insurer drags its feet.

Their insurance

A third-party claim

No deductible for you
Rental usually included
Waits on their insurer accepting fault
Their adjuster works for them, not you

Your own collision

Then your insurer recovers it

Usually faster to start
You pay the deductible up front
Deductible typically returned if they recover
Only if you carry collision coverage

In no-fault states (about a dozen, including Florida, Michigan and New York), your own policy's personal injury protection pays medical bills first, whoever caused it. The repair still follows fault. The full walkthrough — including what their adjuster is doing — is in our guide to what to do after an accident that wasn't your fault.

Common
Questions

Who is at fault when you get rear-ended?

Usually the driver who hit you from behind. Most states presume the rear driver was following too closely or not paying attention. That presumption can be challenged — for example if you reversed, cut in and braked hard, or had broken brake lights.

What should I do right after being rear-ended?

Check for injuries and call 911 if anyone is hurt, photograph both cars where they stopped, exchange license and insurance details, avoid discussing fault, and get a police report number. Ask nearby businesses for camera footage the same day.

My bumper looks fine. Can there still be damage?

Yes. The bumper cover is plastic and flexes back after a low-speed hit, while the energy absorber, reinforcement bar, brackets and sensors behind it can be crushed, bent or knocked out of alignment. A shop has to remove the cover to know.

Whose insurance pays when I'm rear-ended?

Usually the at-fault driver's liability insurer pays for your repair and, typically, a rental, with no deductible for you. You can also use your own collision coverage, pay your deductible, and let your insurer recover the money from theirs.

Can I get hurt in a low-speed rear-end collision?

It's possible. Rear-end impacts snap the head forward and back, and neck pain, stiffness and headaches often appear a day or two later rather than at the scene. If anything feels off, get checked and tell the doctor about the crash.

How long after being rear-ended can symptoms appear?

Commonly within 24 to 72 hours, sometimes longer. Seeing a doctor within days creates a record that connects the symptoms to the accident.

What if I was pushed into the car in front of me?

In a chain reaction, the driver who started it by hitting you is usually responsible for both your rear and front damage. Photograph each impact separately and note the order the cars were hit.

Will my insurance go up if someone rear-ends me?

Many states restrict insurers from raising rates for accidents you didn't cause, and a rear-end collision is usually treated that way. Rules differ by state and insurer, so check with yours.