A dealer tells you the car you're eyeing is a "Top Safety Pick." The one on the next lot is a "Top Safety Pick+." Same badge design, same insurance-industry logo, one extra character — and most shoppers assume the plus sign means "basically the same thing, but fancier." That assumption is where people get misled, because the gap between those two awards usually comes down to one unglamorous system that has nothing to do with airbags or crumple zones: headlights.
The Insurance Institute for Highway Safety, a nonprofit research organization funded by auto insurers rather than by taxpayers or automakers, created both awards to give consumers a fast way to identify vehicles that performed well across its battery of crashworthiness tests. But "performed well" and "performed at the top of the class in every category, including the ones that are easy for automakers to overlook" are different bars, and that difference is precisely what separates the plain badge from the plus badge.
What IIHS Actually Tests
IIHS runs its own physical crash tests, independent of the federal government's testing program, using vehicles it purchases itself rather than ones supplied by manufacturers. The core evaluation includes several distinct crash modes: a moderate overlap front test, a small overlap front test on the driver's side, and — for many vehicles — a small overlap test on the passenger side as well. There's a side-impact test designed to simulate being struck by a higher-riding vehicle like an SUV or pickup, a roof strength evaluation that measures how much force the structure can withstand before it deforms in a rollover-type scenario, and a head restraint and seat evaluation aimed at whiplash protection in rear impacts. Each of these gets a rating, and IIHS also factors in the performance of front crash prevention technology and, critically, the quality of the vehicle's headlights.
For a vehicle to earn either Top Safety Pick or Top Safety Pick+, it generally needs to score at the top tier across that set of crashworthiness tests. Where the two awards diverge is in how far the front crash prevention and headlight requirements have to extend, and how demanding those secondary categories are allowed to be.
Why the Headlights Matter So Much
This is the detail that surprises people. Two vehicles can post nearly identical structural crash-test scores and still land on different sides of the Top Safety Pick / Top Safety Pick+ line because one of them ships with headlights that actually illuminate the road adequately at night and the other doesn't, at least not on every trim.
IIHS evaluates headlight performance by measuring how much usable light a headlamp system throws down the road and to the sides under different conditions — low beam, high beam, curves — and how much glare it produces for oncoming drivers. Manufacturers have historically been able to pair a strong-performing halogen or LED headlight on a top trim with a mediocre one on a base or mid-level trim, because headlights are often treated as a cost or styling variable rather than a safety-critical component. Top Safety Pick+ has historically required that acceptable-or-better headlights be available — and in tougher versions of the criteria, standard — across most or all trim levels, not just the one an automaker sends to the test track. A car that only earns strong headlight marks on its priciest trim, while the volume-selling base trim gets a dim or glare-prone unit, is a textbook example of a vehicle that misses the plus tier for that reason alone.
This matters in the real world more than it sounds like it should. A meaningful share of fatal crashes happen at night or in low-light conditions, and a headlight system that fails to light up the roadside in time for a driver to react to a pedestrian, cyclist, or stalled vehicle is a genuine safety gap — one that has nothing to do with how well the car protects you once a collision has already started.
Front Crash Prevention Is the Other Differentiator
The second pillar that separates the two tiers is front crash prevention performance, meaning the vehicle's forward-collision warning and automatic emergency braking systems. IIHS tests how effectively these systems avoid or reduce the severity of crashes into a stationary target and into a simulated vehicle ahead, typically at a range of speeds relevant to city and highway driving. Increasingly, IIHS has also incorporated evaluation of pedestrian detection performance — how well the system recognizes and reacts to a person in or near the road, including in daylight and after dark.
The base Top Safety Pick award has historically required solid front crash prevention performance, but Top Safety Pick+ has generally demanded a higher standard: better performance across a broader speed range, and often inclusion of pedestrian-detection capability that actually delivers meaningful speed reduction rather than a token warning chime. As with headlights, availability across trim levels can matter — a system that's a paid option buried in an expensive package doesn't help the buyer who drives home in the base trim.
A Badge From One Year Isn't the Same as a Badge From Another
Here's the part that trips up secondhand car shoppers especially: these criteria are not static. IIHS periodically raises the bar for both awards, tightening the small overlap test requirements, adding new test modes like passenger-side small overlap, or ratcheting up the headlight and crash-prevention thresholds needed to qualify. When that happens, a vehicle that comfortably earned Top Safety Pick+ two or three model years ago might not earn any award at all under the current criteria, even though nothing about the physical car has changed — the goalposts moved.
This is by design, not a flaw. The organization's stated goal is to keep pushing the industry toward better performance, and freezing the criteria in place would eventually make the award meaningless as automakers caught up across the board. But it does mean you should treat an older award as a snapshot of "excellent for its time" rather than an evergreen guarantee. If you're shopping for a used vehicle from several model years back, look up how that specific model year performed rather than assuming the badge you remember seeing when it was new still applies, and check whether the vehicle underwent a mid-cycle redesign that could have changed its structure or safety equipment.
It's also worth remembering that IIHS doesn't test every vehicle on the market every year, and it tends to prioritize higher-volume, more relevant models. A vehicle's absence from the winners list doesn't necessarily mean it performed poorly — it may simply not have been tested that year in that configuration.
How This Differs From the Federal Star Rating
IIHS is an industry-funded nonprofit, not a government agency, and its tests are separate from the National Highway Traffic Safety Administration's 5-Star Safety Ratings program, which uses its own crash protocols and its own scoring scale. The two programs test different things in different ways and don't always agree — a vehicle can score well with one and only middling with the other, which is exactly why serious shoppers check both rather than treating either one as the final word. We cover how the federal program works, and how its frontal, side, and rollover tests are structured, in a separate piece dedicated to that system.
Reading the Badge the Right Way
The practical takeaway is that Top Safety Pick and Top Safety Pick+ are both meaningful signals of above-average crash test performance, but they're not interchangeable marketing terms and the plus sign isn't just a nicer sticker. It typically reflects a vehicle that backs up strong structural crash protection with headlights that work as intended on the trim you're actually going to buy, and with front crash prevention technology that performs at a higher standard rather than a checkbox level. Before you let either badge settle a purchase decision, confirm the model year and trim match what you're buying, verify the award using the current published ratings rather than a badge you recall from an ad, and remember that even a top-tier rating describes performance in a specific set of controlled test scenarios rather than a guarantee about every possible real-world crash.
Key Takeaways
IIHS is an insurer-funded nonprofit that runs its own independent crash tests, separate from the federal government's program. Top Safety Pick and Top Safety Pick+ both require strong scores across crashworthiness tests like small overlap, side impact, and roof strength. The "+" tier is usually earned or lost on headlight performance across trim levels and on more advanced front crash prevention, including pedestrian detection. IIHS raises its criteria periodically, so an older award doesn't guarantee the same vehicle would qualify under today's standards. Not every vehicle is tested every year, so a missing badge doesn't automatically mean poor performance. Bottom line: treat Top Safety Pick+ as the stronger, more complete safety signal, but always verify the specific model year and trim against current published ratings rather than relying on the badge alone.
