Stick with a 70-quart cooler.

Yes, that’s typically the largest size that fits in the back of a standard SUV (think Toyota Highlander, Ford Explorer, Honda Pilot) with the rear seats folded down.

The reason is simple: most SUV cargo areas are about 40 inches wide and 35-40 inches deep. A 70-quart cooler usually measures around 30″ long, 18″ wide, and 18″ tall — it slides in and leaves room for other stuff. A 100‑quart or larger is closer to 40″ long, which often forces you to tilt it, block the hatch, or fold a seat you need. Also, once loaded with ice and drinks, a 70‑quart is already heavy enough to lift solo. Bigger becomes a two-person job.

If you absolutely need more capacity, look at wheeled coolers or soft‑sided options that flex to fit weird spaces. But for a standard SUV, 70 quarts is the sweet spot. Don’t buy a bigger cooler than your car can carry.