Mazda CX-3 Grille: Fitment, Sensors & Common Damage

A genuinely important market fact: Mazda Radar Cruise Control hasn't historically been available on the UK-market CX-3 the way it has on other markets or the CX-5 — worth confirming before assuming a fault.

Illustration for editorial purposes

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OEM Part Number: confirm via VIN — radiator grille (aftermarket) Diederichs 5645040

Accuracy note: Covers the Mazda CX-3 (2015-) as listed in the UK aftermarket catalogues. Grilles are sold by trim and facelift, and many generations had different grilles for base, mid and top trims, with or without a radar or camera opening. Where the catalogue splits a grille into left and right or upper and lower sections, buy both halves if both are damaged. The references below are UK aftermarket catalogue listings for this generation, labelled by brand with the fitment details the catalogue gives; carmakers rarely publish the genuine number against these, so match a genuine grille against your VIN if you want a guaranteed fit.

Radiator grille (aftermarket)	Diederichs 5645040 (dark grey)
Genuine (OE) numbers quoted	None quoted in the catalogue listings — the genuine grille varies by trim level, facelift and sensor options, so order it against your VIN

A Genuinely Important Market Availability Fact Worth Knowing — Mazda CX-3 Grille

This is genuinely worth knowing before assuming a fault with your specific car: Mazda Radar Cruise Control and the associated Smart Brake Support feature, both housed behind the grille emblem, have not historically been available on the UK-market CX-3 the way they have been on some other markets or on the related CX-5 — several UK owners have specifically noted this omission when comparing notes with owners in other countries. If you're missing this feature entirely and searching for a fault, it's genuinely worth first confirming your specific trim and market ever had it fitted, rather than assuming something has failed.

Worth knowing if your CX-3 does have radar cruise fitted: a specific fault code (P2583) indicates a problem with the front-facing radar sensor housed behind the Mazda emblem, with suffix codes narrowing down whether the cause is misalignment or an obstruction. A minor front-end impact, even one that seemed too small to matter, can knock the sensor slightly out of alignment, with the resulting fault sometimes not appearing for days or weeks afterward.

It's also worth knowing that any work beyond simply cleaning the sensor area genuinely needs proper ADAS calibration equipment to ensure the system functions correctly afterward, and that temporary environmental factors like heavy rain or fog can trigger the same warning temporarily.

Mazda CX-3 Grille: Cosmetic on the Surface, Functional Underneath

Treating the Mazda CX-3's grille as a purely cosmetic part is a common mistake — it also manages radiator airflow, and on many newer models incorporates or surrounds the sensors for adaptive cruise or parking assistance. That functional role is exactly why the correct part number matters more than it might seem.

Mazda CX-3 Grille: Watch: Fitting It

🎬 Watch: Project Mazda CX-3 -- RED Front Grille Bumper Cover Trim

Watch on YouTube ↗

This video covers removing the front bumper, which is how the grille is reached on this car.

Before you buy: grille design varies significantly by trim, and higher trims may integrate radar or camera sensors behind or within the grille itself. Always confirm against your VIN before ordering.

Mazda CX-3 Grille: What It Does

Beyond styling, the grille on the CX-3 directs airflow to the radiator and, on trims equipped with adaptive cruise control, may house or sit directly in front of the radar sensor used for that system. A grille that looks compatible but lacks the correct sensor cutout can interfere with these systems even if it fits physically.

Mazda CX-3 Grille: Generations, Derivatives & Grille Finish

Standard trims	Mesh-type grille finished in black with chrome moulding, following Mazda's signature "wing" front-end contour
Sport trim	Genuinely different — a solid bar-style grille painted to match the body colour, rather than the mesh-and-chrome design of standard trims

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Mazda CX-3 Grille: Common Damage, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Grille Guide for common damage types, confirming trim-specific fitment, how difficult this job is to DIY, and the ADAS calibration risk with sensor-equipped grilles.

More Mazda Grille

The same part, covered across other Mazda models.