First Alert Fire Extinguisher for Car & Marine Use, UL Rated 10-B:C, AUTOMAR10 FE10GR, White, 1-Pack Review (2026)

What this extinguisher covers

The First Alert AUTOMAR10, also listed as FE10GR, is a UL rated 10-B:C fire extinguisher built for car and marine use, meaning it targets flammable liquid fires such as gasoline, class B, and energized electrical fires, class C. According to First Alert's own product page it measures about 14.1 inches tall, 4.5 inches long and 3.2 inches wide, and weighs 5.3 pounds, making it a moderately sized unit for mounting in a tow vehicle, boat or vehicle storage area. Like other extinguishers in this rating class, it does not carry an A rating, so it is not intended for ordinary combustible fires involving wood, paper or fabric.

Build and safety features

First Alert describes the unit with a durable metal head and a metal pull pin with a safety seal, intended to prevent accidental discharge and discourage tampering before the extinguisher is actually needed. The pressure gauge is corrosion-resistant and easy to read at a glance, letting an owner do a quick visual check that the unit is still charged, while the label is described as chemical resistant and waterproof, a relevant detail for a product meant to live in a boat or vehicle exposed to weather. The extinguisher is rechargeable by a certified professional after use rather than single use only, and it carries a 10 year limited warranty from First Alert.

Where it fits in an RV and tow vehicle setup

Because of its 10-B:C rating, this extinguisher is best mounted in the tow vehicle cab or near the engine bay where flammable liquid and electrical fires are the realistic risk, using the included mounting bracket to keep it secure in place. It is not a substitute for a broader ABC rated extinguisher inside the RV's living area, where bedding, upholstery and cooking equipment create a different fire risk that this unit's rating does not cover. Owners should check the pressure gauge periodically and note the 10 year limited warranty period as a rough guide for when to consider replacement or professional recharge, following First Alert's own instructions for exact service intervals.

How it compares with other RV fire extinguishers

Our score of 7.4 out of 10 ranks this extinguisher seventh of eight in the site's RV fire extinguisher guide, behind marine and residential units from Kidde and First Alert that add an A rating for ordinary combustibles on top of the same 10-B:C style protection. It sits close to the similarly specced Kidde Auto 10, another automotive focused 10-B:C unit, with the main differences between the two coming down to brand preference, bracket style and the 10 year warranty offered here. RVers who want a single extinguisher to cover both the tow vehicle and cabin fires generally need to step up to a 1-A:10-B:C rated unit instead.

Who should buy this extinguisher

This is a sensible choice for mounting in a tow vehicle cab or a boat where fuel and electrical fires are the main concern, backed by a metal head build and a 10 year limited warranty from an established safety brand. It should not be the only extinguisher on an RV trip, since it does not cover fabric, bedding or wood fires that can start in the living area. Pair it with a broader rated ABC extinguisher near the RV kitchen and exit, and follow First Alert's printed instructions for inspection and recharge.

Frequently asked questions