Having an emergency kit in your car is a great idea for day-to-day driving, but it’s pretty much a necessity for long-distance road trips. Although it’s tempting to buy a preassembled kit and be done with it, we haven’t found a great one yet. Even the most promising options suffer from having jumper cables that are too short, too thin, or both. Basically, if you want a good kit, you have to make it yourself, and we’re here to help.
We spent hours researching and testing each of these essentials to confirm that they’ll be useful in case of an emergency, whether it’s your own or someone else’s.
On a desolate stretch of two-lane highway in northern Arizona, we were driving behind a rental camper van just as it had a rear-tire blowout after hitting a rumble strip. The couple driving the van couldn’t find their jack, didn’t know where the spare tire was, and had come to a stop just past a low dip in the road. It wasn’t a good scene. But it couldn’t have happened at a better time (for them, at least), and it gave us a great opportunity to put our emergency gear to the test.
It’s also wise to get a membership to a roadside assistance program. We don’t have a single best recommendation for everyone, since your options and needs vary depending on what car you have, how you use it, and where you live, but here’s a good guide by Popular Mechanics on what to look for in choosing a plan. Basically, make sure your plan fits your needs. For example, if you live in a city, 3 miles of free towing may be enough. But if you’re going on a road trip across the desert, paying for more range is worthwhile.
First-aid kit
Top pick
This kit is chock-full of bandages and cleaning supplies that are suitable for minor incidents.
On the road, a first-aid kit is useful for keeping someone comfortable until people with real medical expertise can help. It’s much more important to have a basic kit with you—and to be sure that the bandages haven’t degraded and the disinfectants haven’t expired—than to have a 432-item, war-zone-worthy kit sitting at home.
We like the First Aid Only 298 Piece All-Purpose First Aid Kit. It lacks some of the higher-quality tools that we recommend for a wilderness first-aid kit, but it comes with plenty of bandages, alcohol prep pads, pain relievers, and equipment to treat up to four people’s minor cuts and scrapes on a weekend trip. (For an extensive list and comparison chart, see our full guide.)
Snow shovel
Top pick
This small shovel slices through icy snow and can be disassembled for car storage. It isn’t cheap, but it’s what we’d want to have in a roadside emergency.
After spending two years researching car shovels and testing five contenders, we found that the best one to keep in the trunk for an emergency is the Voilé Telepro Mini Avalanche Shovel.
The tool, popular with ski patrols and people clearing backcountry trails, has a solid metal scoop and a two-piece handle that clicks together to form a sturdy shovel. Our tester keeps the Voilé shovel in her truck every winter, and it has come in handy more times than she can count. Though the Voilé shovel is too short to be a primary shovel, it’s perfect for any kind of fast shoveling. When you aren’t using it, you can tuck its three pieces neatly under a car seat or in the back.
Tire gauge
Top pick
This is the favored tire gauge of all the professionals we interviewed.
Checking your car’s tire pressure (including that of the spare tire) is like flossing: It’s something that everyone should do but many people don’t do. Proper inflation is vital. Too much, and you’ll feel every bump and have more difficulty stopping your car; too little, and your tires will wear faster. Worse, they’ll also overheat, which can separate the treads and blow the tires, something we saw happen right in front of us in the middle of nowhere in Arizona. Don’t let that happen to you.
When we asked three different San Francisco Bay Area tire shops which gauge they used, they all pointed to the Accu-Gage 60 PSI gauge with shock protector. After our testing, which included road-tripping with the tool ourselves, the Accu-Gage model has emerged as our favorite tire gauge for several years running. It’s accurate and durable, and unlike a digital gauge, it has no battery to wear out. The Accu-Gage model is available in several different configurations, but the performance is largely the same. We prefer a version with a hose attached and a straight chuck, because that design makes it easier to hold the gauge and check the tire pressure at the same time. The version we tested even comes with a removable rubber bumper in case you drop it.
Portable jump starter
A portable jump starter is essentially a lightweight battery attached to two jumper cables that you use to jump-start your car. It’s easier, safer, and less intimidating than old-fashioned jumper cables that you attach to another car—and it’s something that you can use if you’re alone, instead of waiting for roadside service/a kind stranger/a friend/a relative to show up and bail you out.
Staff pick
This jump starter has the right safety features and contains enough juice in a small package to start most cars and SUVs.
Wirecutter has recommended Weego gear since we first published our guide to portable jump starters in 2017. Guide writer Mark Smirniotis researched 40 lithium-ion jump starters and tested 12. Two Weego portable jump starters (both of which are now discontinued) became picks: the Weego 22s (the top pick; about $60) and the Weego 44 (the upgrade pick; about $150). Though we no longer maintain that full guide, many of us at Wirecutter still keep a Weego jump starter in our cars. But now, in many cases, it’s an updated version, namely the affordable Weego 44s, which hovers around the same price as the 22s model, its less powerful predecessor.
Measuring 5.62 by 3.44 by 1.04 inches (LWD), the Weego 44s jump starter is about the same size as a cell phone in length and width. It also weighs less than a pound (around 12 ounces, according to my kitchen scale) and has safety features that help prevent you from hurting your car or yourself: If you incorrectly attach the jump starter to your battery (which can potentially damage the battery or your car’s electrical system), the unit’s reverse-polarity protection feature activates, issuing a red light and an alarm alerting you not to proceed.
The Weego 44s is rated to work with a wide range of vehicles, including gas engines up to 7 liters and diesel engines up to 3.5 liters. It can jump-start pretty much any gas- or diesel-powered passenger-vehicle engine—anything from a Mini Cooper (2 liters or less) to a Dodge Ram (as much as 6.7 liters)—and it fits that power into a package that’s small enough for most glove boxes.
The Weego 44s comes partially charged out of the box and takes about 2.5 hours to charge from zero. A USB-A–to–Micro-USB charging cord is included, but it doesn’t come with a charging cube, so you need to plug the USB-A end into your own USB phone charger that works in regular household outlets or use an outlet with a USB-A port. According to the company, the unit can stay charged for more than a year in storage, though you should make sure to top it off every three to six months. With regular use, it’s rated to last for about three to five years or up to 1,000 recharge cycles. Plus, it can provide multiple jumps before it needs a recharge itself (five lights on the side of the unit indicate its remaining battery life).
The Weego 44s has checks and balances to ensure that you safely jump-start a car, but its lithium-ion polymer battery comes with certain caveats. Though the manufacturer indicates that the unit will operate in temps of -4 °F to 140 °F, leaving it in a car in extremely hot or cold conditions is not a great idea. “Most devices that contain a lithium-ion battery, whether it’s your smartphone or a portable jump starter, should not spend long periods of time in extreme temperatures since it can cause permanent damage to the battery,” says Wirecutter senior staff writer and battery expert Sarah Witman. “You should also keep in mind that car engines need more power to get started in freezing temperatures, so it’s especially important to keep your jump starter fully charged when driving in cold climates.”
Jumper cables
If you’re a die-hard jumper-cable partisan, make sure that the cables you get are long enough for most scenarios and thick enough to carry sufficient current to jump most vehicles.
Top pick
This cable is long and durable enough for any situation, with a current rating that can handle SUVs.
After scrutinizing the specs of dozens of jumper-cable options and having an electrical engineer analyze three top-rated models, we recommend Lifeline’s AAA Heavy Duty 16-foot 6 Gauge Booster Cables. As this image illustrates, these cables are long and thick enough for most situations, and their 400-amp current rating means they can handle most vehicles, even trucks and SUVs. They also come with a surprisingly sturdy and convenient mesh storage bag.
One thing that sets these Lifeline cables apart from other cables we found on Amazon is that the 6-gauge description is accurate. For example, Capri sells a 4-gauge, 20-foot cable that reviewers say is closer to 8-gauge. That’s no good, because thinner cables can fail to deliver sufficient current to start trucks, SUVs, and other larger vehicles.
If you’re unfamiliar with how to use jumper cables, familiarize yourself. But lest you forget, Lifeline includes a handy diagram in the bag. The important thing to keep in mind: Do not attach the black clamp to the black post of the dead battery. Instead, clamp it to an unpainted metal surface under the hood. Also, don’t touch the exposed parts of the clamps together while the cables are hooked up to a battery; they will spark.
Tool roll
Top pick
This tool roll is designed for off-road emergencies. The handy roll and its mix-and-match tool configurations offer almost everything necessary to keep a vehicle on the road.
If you don’t own any tools for car maintenance, this kit is a great start. With 65 individual tools, the Decked x BoxoUSA Tool Bag with Tool Roll has nearly every tool that a home mechanic (especially those who own a truck) might need to keep their vehicle on the road. As the kit was designed originally for off-roading, bringing the whole thing and all its contents would be overkill for most people (the entire kit weighs 31 pounds). But selecting the necessities—the ratchet and wrench set, for instance—depending on the kind of journey you’re planning is easy and efficient due to the built-in compartmentalization. Included within the kit are combination wrenches, sockets, impact sockets, hex and torx keys, breaker bars, and a family of hammers, pliers, and screwdrivers. The heavy-duty Cordura nylon bag is built to last, too. If you’re at all interested in doing some of your own car maintenance, or if you want to be prepared in case of emergency, this toolkit offers a solid foundation.
Headlamp
Top pick
The Spot 400 is an easy-to-use, bright-enough headlamp that provides long-lasting battery life and reliable performance, year after year.
We’ve been testing headlamps since 2012, including our latest round of research and testing in 2023. For a road trip, we like a headlamp that’s rechargeable, so you won’t ever get caught with a dead battery, as long as you have a USB car charger on hand. Its 450-lumen light ranks among the brightest of all our picks. (Twice during our trip we pulled into our camping site late, and our headlamp was the first thing we reached for. Knowing that it was always charged meant that we didn’t have to hunt for batteries or use our car lights and disturb neighboring campers.)
The current version of our longtime top pick, the Black Diamond Spot 400 provides exactly what you need: a bright beam, easy-to-navigate buttons, and long-lasting battery life. The Spot 400 has been at the top of our list since 2012 because it’s reliable and bright enough to light the way in most situations, indoors or outdoors. And as of 2023, you can buy an add-on rechargeable battery for the Spot 400.
Its two top buttons are intuitive to use; you have to experiment with clicking through the various modes, but the learning curve is fairly quick. It has a red light (for night use), a “proximity” floodlight (for a wider field of view), and strobe options (for throwing an emergency signal). The Spot 400 weighs 3 ounces, has a lock mode, and is weather resistant.
Although headlamps with brighter, higher-quality beams exist, none offer the same combination of brightness, simplicity, and reliability at such a low price.
Flare alternative
Top pick
Crushproof and waterproof, this set of three beacons comes with magnets for car mounting. And these are much safer than traditional flares.
To keep yourself safe while your car is parked on the side of the road, we suggest StonePoint LED Emergency Beacon flare alternatives.
We like the StonePoint set because, for the price of one high-intensity model like the PowerFlare device, you get three separate lights that are all crushproof to 20,000 pounds, waterproof, magnetic, and easy to set up and turn on. The magnets are important because they let you mount the beacons on your car, which adds height; having a flare anywhere above the surface of the road greatly increases your visibility. By putting one on the road (preferably elevated on something and located about 100 feet before your car), another on the trunk, and another on the hood, you create a very visible early warning for drivers.
Traditional magnesium flares will almost always be brighter and more visible. But their hazards—both to your health and to the environment around you—are substantial. (Read the health and environmental hazards section in this report [PDF] for a breakdown of the risks and the potentially harmful chemicals involved.) Combine that with the fact that you can mitigate any differences in visibility simply by elevating an electric flare, and you end up with a compelling argument against using traditional flares.
Of the three beacon models we tested, we couldn’t figure out how to open or turn on the Wagan model. And the Smittybilt U.F.O. safety light, though tough, wasn’t especially effective during the day and came only one to a package. Only the StonePoint beacons were easy to fill with batteries and place on the road exactly when we needed them. They also happened to be the brightest flare alternatives we had with us.
I should take a moment here and repeat what the responding officer told us when he arrived on the scene. Regardless of what safety beacons you have laid out behind you, “Stay off the road, and when in doubt stay in your car.”
Multi-tool
Top pick
This light, slim multi-tool is easy to carry and built to last.
No emergency kit is complete without a multi-tool. Most minor situations—such as a loose Phillips-head screw or a need to create a rag for checking your oil—are easily fixed as long as you have the right tool. Multi-tools are small enough to carry in a jeans pocket or to attach to a belt, so you can take a set of useful tools almost anywhere. Our choice is the Leatherman Skeletool CX, which comes with pliers, a bit driver, a pocket clip, and a carabiner/bottle opener, in addition to a high-quality, 2.6-inch 154CM carbon-fiber stainless steel blade. The Skeletool CX stood out from the other 22 multi-tools we tested because it focuses on the functionality, ergonomics, and solid construction of a few essential tools, instead of cramming dozens of different tools into a single bulky body that makes it difficult to use. That means it’s easy to carry but still has just about everything you could possibly need (short of a hammer and a socket set) to make an emergency repair in the field and on the road.
Duct tape
Top pick
This tape is super strong and sticky, flexible enough to wrap around corners, and easy to tear in a clean, straight line.
If you can’t duct it, fuhgeddaboudit. We tested the heck out of 11 rolls of duct tape and chose Duck Max Strength tape above the competition for its perfect blend of attributes, namely high material strength, a strong adhesive, and superior overall flexibility for easy wrapping around odd shapes and curved surfaces. Is it an absolute necessity on the road? No. But the moment you need to fix a ripped tent wall or to keep unruly motel shades shut, you’ll be glad you packed some duct tape. It can even handle first-aid duties when the right materials for the job are unavailable. Duct tape is, as any MacGyver fan will tell you, a very useful tool.
Water jug
Top pick
This water jug holds enough water for two people for two days, and it has a spillproof screw-on vent cap.
The general rule for water in an emergency is that one person needs one gallon of water for one day. But four to five gallons is a good amount to throw into your trunk—enough to get you through being stranded, even with a passenger. You should increase that estimate if you plan to go out in the middle of nowhere, or if your travels take you to a desert region or some other dry place. We found on our trip through the Southwest that we were refilling our water bottles a lot more than we were stopping for gas.
After researching 16 different types of water jugs, we recommend the Reliance 4-Gallon Aqua-Tainer for most situations. The Reliance jug has two standout features: a screw-on vent cap and a spigot cap that reverses in on itself when not in use. These features work together to prevent major spills. The screw-on vent cap doesn’t come undone, unlike the pull-top vents on some competitors, which tend to pop open and spill water as soon as you hit anything other than the smoothest roadways. Spigot caps can be a weakness for some jugs, too. In contrast, when not in use, the Reliance jug’s spigot unscrews and drops into the jug itself, sealing up the whole canister nice and tight. On our road trip, we used the 4-Gallon Aqua-Tainer, which can provide water for two people for two days; for more people, consider the 7-Gallon Aqua-Tainer.
The Reliance Aqua-Tainer jug is made from BPA-free molded plastic. It’s easy to pack around in the trunk of a car—certainly easier than large, bladder-type jugs (like the MSR Dromedary Bag), which, though excellent for camp showers and good for a backpack, are too difficult to pack around in a trunk because of their non-rigid shape. The Aqua-Tainer’s hard sides also make it easier to use for dispensing water from, say, the roof of your car. But be sure to throw a shirt or towel under the Aqua-Tainer before setting it atop your car like this: We learned the hard way that the molded plastic edge can scratch your car’s paint job if you’re not careful.
Avoid gallon jugs, since they’re typically made out of HDPE plastic, which punctures easily. (Such jugs also have caps that pop off easily.) We wouldn’t buy collapsible jugs, either, since they are prone to leaks and are unruly when pouring.
