Mazda CX-5 Starter Motor: Specs, Fitment & Common Faults

How to tell a failing starter motor from a flat battery, and what actually fits your specific engine.

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Mazda CX-5 Starter Motor reference plate

OEM Part Number: PYFL-18-400 (petrol)

Accuracy note: confirmed below via Mazda's own official parts catalogue. Mazda part numbers are usually consistent globally for mechanical components like this, but confirm against your VIN since UK-spec cars occasionally differ.

Petrol (turbo and non-turbo)	Mazda OEM: PYFL-18-400
Diesel (2.2 Skyactiv-D)	Mazda OEM: SH05-18-400

Often Confused With a Battery Problem

A Mazda CX-5 that won't start gets blamed on the battery first, more often than not correctly — but a healthy battery paired with a failing starter motor produces some genuinely similar symptoms, which leads plenty of people to replace the wrong part first.

Before you buy: starter motor specification varies by engine size and, on some versions, whether the car has stop-start technology. Always confirm against your VIN before ordering.

Mazda CX-5 Starter Motor: What It Does

On the Mazda CX-5, the starter motor uses electrical power from the battery to physically turn the engine over, initiating the combustion cycle. On cars with stop-start systems, this component works considerably harder than on older designs, since the engine restarts far more frequently — which is why stop-start cars often use a reinforced starter motor rather than a standard unit.

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Mazda CX-5 Starter Motor: Symptoms, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Starter Motor Guide for symptoms to watch for, confirming fitment against your VIN, and aftermarket advice.