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Service bulletin 05-74-20

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10174544
Published by NHTSA2020-05-04
Manufacturer's number05-74-20
Manufacturer's date2020-04-30
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

This bulletin provides a service procedure to address a small number of customer concerns regarding a knocking type sound coming from the engine compartment when going over bumps at low speed.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Vehicles listed
SUBARU BRZ2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

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