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The Gap

Your “SUV” Protects You Like a Sedan. FARS Data Exposes the Crossover Lethality Gap.

Clara Rollover • Clautomotive Desk
March 29, 2026
☕ 4 min read
A tiny subcompact crossover SUV parked next to a full-size SUV, both wearing identical SUV badges, illustrating the dramatic size and protection gap within the same vehicle class

A Nissan Kicks and an Audi Q5 sit in the same EPA vehicle class. Both carry the “SUV” designation on their window sticker. One weighs about 2,650 pounds. One weighs about 4,050. And when a fatal crash happens, the Kicks occupant dies 73.9% of the time while the Q5 occupant dies 32.2% of the time.[1]

2.3×
Occupant lethality gap between the deadliest and safest SUVs in FARS data

I computed a simple ratio from FARS 2014–2023: take every fatal crash involving a given SUV model, then count how often the SUV’s own occupant was the fatality. Call it the lethality ratio. A score of 1.0 would mean the SUV occupant died in every fatal crash. A low score means someone else died while the SUV occupant walked away.

Among 90+ SUV models with 100 or more FARS crashes, that ratio ranges from 0.322 (Audi Q5) to 0.739 (Nissan Kicks).[1] Here is what the bottom of the SUV class looks like: Kicks at 0.739, Toyota C-HR at 0.690, Lincoln MKC at 0.668, Buick Encore at 0.609, Ford EcoSport at 0.606. For reference, a Chevy Sonic sedan scores 0.754. A Chevy Spark scores 0.744. These crossovers die like cars.

Meanwhile, the Q5 sits at 0.322. Mercedes ML-Class: 0.325. GMC Acadia: 0.343. Toyota Land Cruiser: 0.347. BMW X3: 0.358. In fatal crashes involving these vehicles, roughly two-thirds of the time it is the other driver who does not survive. Mass works. It just does not work for you if your “SUV” weighs less than a mid-trim Camry.

Why Weight Has a Cliff

IIHS published a weight-and-fatality study using FARS data from 2011–2022.[2] Their finding: safety benefits increase with weight up to about 4,000 pounds. Below that, each additional 500 pounds cuts the driver death rate by 17 points while raising the partner-vehicle death rate by only 1 point. Above 4,000 pounds, the driver gains nothing and the other car suffers more.

Every subcompact crossover on the market comes in under 3,300 pounds. Kicks: 2,650. C-HR: 3,300. EcoSport: 2,900. Encore: 3,100. They sit 700 to 1,350 pounds below the benefit threshold that IIHS identified.[3] You paid for an SUV. You got sedan mass with a taller seating position.

Methodology

Lethality ratio = (occupant deaths of model X in FARS) ÷ (total FARS crashes involving model X). Filtered to SUV-class vehicles with 100+ FARS crashes, 2014–2023. FARS records only crashes involving at least one fatality; this ratio measures who dies in those crashes, not overall crash risk.[1]

Counterargument at Full Strength

Subcompact crossover buyers tend to be urban, younger, and drive at lower average speeds. These vehicles also carry newer active safety tech (automatic emergency braking, lane-keep assist) that might prevent many crashes from becoming fatal in the first place, leaving only the worst impacts in FARS. If that filter effect is strong enough, the lethality ratio is measuring crash severity that survived AEB screening, not raw vehicle protection. I find this plausible but unquantifiable with available data.

Limitations

FARS captures roughly 36,000 annual traffic deaths out of an estimated 6.7 million total crashes. Survivable crashes are invisible here. Fleet estimates rely on sales-based VMT projections, not actual registrations. Some models (EcoSport: 86 deaths, C-HR: 109) have smaller FARS samples and wider confidence intervals. And lethality conflates vehicle protection with speed, road environment, and crash partner mass.

None of that explains a 2.3x spread within a single vehicle class. If you want SUV protection, weigh what you buy. Literally.

Sources & References

  1. NHTSA, Fatality Analysis Reporting System (FARS), 2014–2023. Lethality ratio computed from per-model deaths and crash counts. nhtsa.gov
  2. IIHS, vehicle weight and fatality risk study, 2011–2022 FARS data. “What this analysis shows is that choosing an extra-heavy vehicle doesn’t make you any safer, but it makes you a bigger danger to other people.” — Sam Monfort, IIHS Senior Statistician. Includes curb weight benchmarks and 4,000-lb threshold analysis. iihs.org
  3. NHTSA, FARS Query System, crash-level and vehicle-level datasets 2014–2023. cdan.dot.gov

Source: NHTSA FARS 2014–2023. Lethality ratio is occupant deaths ÷ total FARS-recorded crashes for a given model. Only crashes with at least one fatality are in FARS; this metric does not reflect overall crash frequency. See methodology for caveats.