Struts wear out gradually, so the symptoms creep up. The clearest signs are a clunk over bumps, the front end diving hard under braking, uneven cupping wear on tires, and oil weeping down the strut body. Two or more of those at once means you are due.

Struts and shocks do related jobs but they are not the same part. A strut is structural: it holds the wheel in place and carries the spring. A shock is just a damper bolted between the body and an existing suspension arm. Most MacPherson-equipped cars (Toyota Camry, Honda Civic, Ford Focus, most modern crossovers) have struts at the front. Trucks and many SUVs use shocks all around or struts only at the front.

The symptoms worth acting on

A clunk over bumps or speed humps

A worn strut mount or a strut that has lost gas charge will thump or clunk over uneven pavement. It is loudest at low speed over potholes and speed bumps. If turning the steering wheel produces a creak or pop, the upper mount bearing is also involved.

Nose-dive under braking, squat under acceleration

Healthy struts limit weight transfer. When they are tired, the front end dips dramatically when you brake hard and the rear squats when you accelerate. You will feel it most in panic-stop situations, which is also when you can least afford to.

Body roll in corners and a floaty feeling on the highway

If the car feels like it is bobbing for half a second after every bump, the damping is gone. A bouncy ride is not just uncomfortable. It also means the tire is losing contact with the pavement, which costs you braking distance and grip.

Cupping or scalloped tire wear

Look at the tread. Even, all-the-way-around tread wear means the tires are doing their job. Scalloped or cupped wear, where high and low spots alternate around the tire, means the wheel is bouncing instead of staying planted. That is a damper failure.

Inside-edge or outside-edge wear is usually an alignment problem, not a strut problem, although bad struts will pull alignment out of spec faster.

Oil weeping down the strut body

Pop the hood, look at the top of the strut. A dry strut housing is normal. Damp or oily streaks running down the body mean the seal has gone. Once the strut leaks, the damping is finished.

Failed bounce test

Push down hard on one corner of the car, then let go. A healthy strut will rebound once and settle. A worn one will bob two or more times. Not scientific, but a useful first check.

What it costs in 2026

Struts are sold and replaced in pairs. Most shops will not do just one side, because mismatched damping creates a real handling problem.

JobPartsLaborTotal
Pair of struts, common car$150 to $400$200 to $400$400 to $800
Pair of struts, truck or SUV$250 to $600$300 to $500$550 to $1,100
All four corners$400 to $1,000$400 to $700$800 to $1,700
Four-wheel alignment aftern/a$80 to $150$80 to $150

The alignment is not optional. Replacing front struts almost always disturbs camber and toe. Skipping the alignment means your new struts wear out unevenly along with your tires.

Quick-strut vs loaded strut vs bare strut

Three options when you buy parts:

  • Bare strut: cheapest, but the labor cost climbs because the shop has to compress your old spring onto the new strut. Spring compressors are dangerous if you are not equipped for them.
  • Loaded strut: comes with the strut, spring, mount, and bearing already assembled. Bolts in.
  • Quick-strut / complete strut assembly (Monroe Quick-Strut, KYB Strut-Plus, etc.): same as loaded. Easier install, often a better warranty.

For DIY work or to keep labor down, the loaded or quick-strut option is usually the smart buy even though the part cost is higher.

How long do they last

Factory struts on a typical car go 50,000 to 100,000 miles before they need attention. Daily driving on bad roads, towing, or hauling weight shortens that. Cheap aftermarket replacements can be worn out by 25,000 to 50,000 miles, which is why a $40 strut on Amazon is rarely the bargain it looks like.

KYB, Monroe, Bilstein, and Sachs all make replacements that match or exceed OEM. Skip the no-name boxes.

Can you drive on bad struts

You can. You should not for long. The damping is what keeps tires in contact with the road. Without it your stopping distance grows, the car wanders in crosswinds, and you start eating tires. A blown strut is also more likely to fail completely on a hard hit, which can leave the spring loose in the wheel well.

If money is tight, do the front pair first. Front struts work harder than rears in almost every vehicle.