Mazda3 & CX-5 Engine Mount Replacement

By the Radman Auto Repair team, independent auto repair in Etobicoke since 1999 · Updated November 2026

Worn engine mounts are a common cause of vibration and clunks in the Mazda3 and CX-5. The passenger-side hydraulic mount leaks or sags, and the rear torque mount wears, so you feel the engine through the seat and steering wheel.

Symptoms

What Causes It

Before You Start

• Park on level ground, set the parking brake and chock the wheels. Never work under a car held up only by a jack: use rated jack stands.
• Let the engine and exhaust cool before you touch them; coolant systems are under pressure when hot.
• Wear safety glasses and gloves, and disconnect the 12V battery before unplugging electrical parts or working near airbags.
• Check for open recalls on your VIN (Transport Canada or the manufacturer’s site) before you buy parts: a recall repair is free at the dealer.
• Support the engine with a jack and a wood block under the oil pan before removing any mount.
• Replace one mount at a time so the engine stays located.

Step-by-Step: Mazda Engine Mount

1. Inspect. With a flashlight, look at the passenger-side mount (near the top of the engine) for leaking fluid and cracks, and at the lower torque mount for torn rubber.
2. Watch the engine move. With the parking brake firmly set and a helper holding the brake, briefly shift between Drive and Reverse while you watch from the side (not in front). Excess movement points to the worn mount.
3. Support the engine. Put a jack with a wood block under the oil pan and take a little weight.
4. Remove the mount. Remove anything in the way (coolant reservoir, brackets), then unbolt the mount from the body and engine.
5. Fit the new mount. Install the new mount, start all bolts by hand, then torque to spec with the engine at its normal height.
6. Repeat if needed. If the torque mount is worn too, replace it next the same way from underneath.
7. Test. Start the engine, shift between Drive and Reverse and test-drive to confirm the vibration and clunk are gone.

When to Stop and Bring It In

• Vibration continues: it may be a misfire, worn axle or wheel balance (see noise and vibration problems).
• Bolts are seized or threads strip.
• You can’t support the engine safely.
• There is a clunk over bumps rather than on shifting: see clunking over bumps.

Not sure, or out of time? Radman Auto Repair in Etobicoke does this repair every week. Book online or call (416) 742-4521.

Also Known As

Searched as “Mazda3 engine mount”, “CX-5 engine mount replacement”, “Mazda vibration at idle”, “Mazda clunk when shifting”, “Mazda torque mount” and “Mazda passenger side engine mount”.

Frequently Asked Questions

See also Noise & Vibration Problems, Car Shaking, Clunking Over Bumps, Multi-Point Inspection.

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