Suspension Noises: How to Tell What's Wrong

A noise coming from under your car, especially going over bumps or potholes, is your suspension asking for attention. In Montreal, with the state of our roads, suspension works overtime.

At the shop, we'll help you identify the most common noises and what they mean.

Types of Noises and Their Causes

Dull clunk

Often caused by worn sway bar links or tired control arms. The most common noise and generally the cheapest to fix.

Metallic rattle

May indicate a failing strut, cracked strut mount, or loose bolt. More concerning.

Squeaking

Dry or worn suspension bushings, or squeaking springs. Especially audible in the cold morning.

Humming or roaring

Often a wheel bearing. Noise increases with speed and changes when turning.

How to Diagnose

Note these details to help your mechanic:

• When: at startup, while driving, over bumps, when turning?
• Where: front, rear, left, right?
• Type: metallic, dull, squeaking?
• Frequency: constant, intermittent, only in cold weather?

Repair Costs

• Sway bar links: $100 to $250 per side.
• Control arms: $200 to $500 per side.
• Shocks/struts: $300 to $800 per axle.
• Wheel bearing: $200 to $500 per wheel.

Key Takeaways

• Suspension noises should never be ignored.
• Sway bar links are the most common and cheapest cause.
• Montreal potholes are the #1 cause of premature wear.
• Note noise details to help the diagnosis.
• Get your alignment checked at the same time.

Frequently Asked Questions

Is it dangerous to drive with a suspension noise?

It depends on the cause. A failing strut affects braking and handling. Get inspected quickly.

How much does a suspension diagnosis cost?

Generally $50 to $100, often deducted from the repair bill.

Are noises worse in winter?

Yes. Cold stiffens rubber and amplifies noises. It's normal for some noises to appear at -20°C and disappear when it warms up.

Should I replace suspension parts in pairs?

For shocks and struts, yes (per axle). For sway bar links, you can replace one side at a time.

How are brakes related to suspension?

Worn suspension components can affect braking stability. And unevenly worn tires (a sign of failing suspension) reduce braking effectiveness.

Garage Path57 · 7971 15e Avenue, Montréal (QC) H1Z 3N5 · (514) 433-7479