Cadillac Escalade IQ vs Rivian R1S

This is a full-size versus mid-size comparison. The IQ is 224.3 in long; the R1S is 200.8. The R1S is actually the taller of the two — 77.3 in, though Rivian publishes that as maximum height with antenna, against the IQ's 76.1.

Neither publishes a body-only width — Rivian lists only mirror-inclusive figures and Cadillac only a mirrors-included 94.1 in — so we record no width for either. On price, the classes are as far apart as the footprints: $83,990 versus $127,405 at the floor.

Here the mid-sizer wins. The R1S publishes 32.8 in of third-row legroom and 38.6 in of headroom; the IQ publishes 32.3 and 37.2. Half an inch of legroom is noise, but 1.4 in of headroom is the difference a tall passenger notices.

The IQ spends its extra 23.5 in of length elsewhere — rows one and two and the cargo bay — not on the third row.

The IQ's second row publishes 41.3 in of legroom to the R1S's 36.7 — a 4.6-in gap, the largest single spec difference on this page. The IQ's second row is individual seats in every variant; the R1S defaults to a bench with captain's chairs optional.

Third-row child-seat hardware splits by philosophy, per the official owner documents: the R1S gives its third row two LATCH lower-anchor sets and two top tethers, while the IQ gives it three top tethers but zero lower anchors — belt-plus-tether installs only. The R1S's owner guide also lists roof-rail airbags for the first and second rows only, where the IQ's manual explicitly extends curtain coverage to the third row.

Behind the third row the IQ carries 23.6 cu ft to the R1S's 17.6 — 6.0 cu ft, roughly two carry-ons. The maximums are a different league: 119.1 (published as behind-first-row, excluding the IQ's separately-listed 12.2 cu ft eTrunk) versus 90.7.

Towing is closer than the size gap implies: 8,000 lb for the IQ, 7,700 for the R1S — the two highest EV tow ratings in this dataset, just 300 lb apart.

The R1S spans $83,990 to $121,990. The IQ spans $127,405 to $148,205 on Cadillac's FAQ trim ladder, and its floor is the highest starting MSRP in this dataset.

The ladders do not overlap: a maxed-out R1S is still $5,415 under the cheapest IQ. There is no build of these two trucks at the same price — the choice is the money first, the truck second.

Cadillac Escalade IQ: The mission is full-size — seven passengers with 41.3 in of second-row legroom, 119.1 cu ft of maximum cargo, the highest EV tow rating in this dataset — and the budget clears $127,405. Third-row car-seat installs are belt-plus-tether by design.

Rivian R1S: The budget stops short of the IQ's floor, the third row itself matters more than the space around it (32.8 in legroom, 38.6 in headroom — both ahead of the IQ), or the third row hosts LATCH-installed car seats, which the R1S supports with lower anchors and the IQ does not.