Parts for your 2020 Mazda 3-Coil springs

2020 Mazda 3 Coil Springs — Purpose, Service and Replacement

Coil springs are absolutely fitted to the 2020 Mazda 3. Technical sources including the Mazda BP-series Workshop Manual (Front and Rear Suspension sections) and Mazda’s Electronic Parts Catalogue list front coil springs as part of the MacPherson strut assembly and separate rear coil springs used with the torsion-beam rear axle. Independent technical reviews of the BP Mazda 3 also note the MacPherson-strut front and torsion-beam rear configuration, both of which rely on coil springs for ride height and wheel control.

On this model, the front coil springs sit over the struts to support vehicle weight, keep the tyres planted, and work with the dampers to control body movement. At the rear, the torsion beam uses standalone coil springs mounted between the body and beam, providing a tidy balance of comfort and stability for everyday Kiwi and Aussie roads.

As part of routine servicing, coil springs deserve a quick look. They generally last a long time, but they can sag, crack, or chip their protective coating. If a spring breaks or sags, the car may sit lower on one corner, feel crashy over bumps, or make a sharp clunk when turning or loading up. It’s smart practice to:

• Inspect every 20,000 km or at each service for chipped paint, rust, or fractured ends.
• Listen for new noises over speed humps or driveways and check for uneven ride height.
• Replace springs in axle pairs to keep handling balanced and ride height even.
• Match the correct spring spec to VIN/trim (hatch vs sedan, engine, options) for proper rates.
• Renew related hardware where needed: strut mounts/bearings, insulators, dust boots and bump stops.
• Book a wheel alignment after any spring or strut work to protect tyres and steering feel.

Because springs store a lot of energy, fitment calls for the right compressors and torque procedures. A qualified technician will safely compress the front coils on the struts, check damper condition while it’s apart, and ensure everything is torqued to spec. In our local climate, corrosion is usually mild, but coastal cars or those driven on chip-seal and rough country roads can see faster wear. With sensible inspections and quality replacements when required, the 2020 Mazda 3’s coil springs deliver years of consistent ride height, tidy handling, and dependable comfort.

Does the 2020 Mazda 3 use coil springs at the rear even with the torsion-beam?

Yes. The BP Mazda 3’s torsion-beam rear axle uses separate coil springs with matched dampers. The front is a MacPherson strut with a coil spring over the shock. Both ends rely on coils to set ride height and support the car.

When should the coil springs be replaced?

There’s no fixed interval. Replace if a spring is cracked or broken, the car sags on one corner, or there are persistent clunks and poor ride over bumps. A quick inspection at each service or every 20,000 km helps catch issues early, and many owners consider replacement after high mileage if ride height or comfort declines.

Can just one spring be replaced?

It’s best to replace springs in pairs on the same axle. A single new spring can create uneven ride height and handling imbalance. Pairing keeps the rates and height consistent left-to-right, which helps steering feel and tyre wear.