Four 2026 GM Full-Size SUVs Ranked by Maximum Cargo Capacity: Suburban, Yukon XL, Tahoe, and Yukon

When you’re comparing full-size SUVs for family hauling, cargo volume is often the first number buyers look at. The 2026 GM full-size SUV lineup covers a range of body sizes, and the differences in maximum cargo volume between them map directly to the size of each vehicle. Here’s how all four rank when all rear seats are folded flat.

All four vehicles run on the same GM full-size SUV platform, sharing the same powertrain options and basic body structure. The differences in cargo volume come from wheelbase, overall length, and how that length is allocated to the cargo area behind the third row.

Ranked: Maximum Cargo Volume (All Seats Folded)

1. Chevrolet Suburban: 4,092 L

The 2026 Suburban is the cargo leader by the numbers. With a 3,406 mm (134.1-inch) wheelbase and an overall length of 5,748 mm (226.3 inches), the Suburban allocates more of its body to cargo space behind the occupants. Maximum cargo volume with all seats folded is 4,092 L.

Behind the third row only, the Suburban holds 1,175 L. Behind the second row, 2,656 L. These are the benchmark figures for the full-size body-on-frame segment in Canada.

2. GMC Yukon XL: 4,092 L

The Yukon XL matches the Suburban exactly: 4,092 L with all seats folded. The two vehicles share the same 3,404 mm (134.0-inch) wheelbase and nearly identical overall length of 5,720 mm (225.2 inches). Third-row-only cargo is 1,175 L.

The difference between first and second place in this ranking is effectively zero from a cargo perspective. Buyers choosing between Suburban and Yukon XL are making that call based on trim content, brand preference, and available packages, not cargo space.

3. GMC Yukon: 3,480 L

The standard-wheelbase Yukon uses a 3,071 mm (120.9-inch) wheelbase and an overall length of 5,338 mm (210.2 inches). Maximum cargo volume with all seats folded is 3,480 L, a meaningful step down from the extended-wheelbase pair.

The Yukon’s smaller footprint makes it easier to park and manoeuvre than the Suburban or Yukon XL, and it offers the same five trim levels: Elevation, AT4, AT4 Ultimate, Denali, and Denali Ultimate. For families whose cargo needs don’t consistently push against the top end of the range, the Yukon’s 3,480 L is still a large number relative to most three-row crossovers.

4. Chevrolet Tahoe: 3,474 L

The 2026 Tahoe is the smallest of the four full-size body-on-frame SUVs in this comparison, with a wheelbase that corresponds to an overall length of 5,367 mm (211.3 inches). Maximum cargo volume with all seats folded is 3,474 L, placing it just 6 L below the Yukon.

Third-row legroom on the Tahoe is 886 mm (34.9 inches). On the Suburban and Yukon XL, that same measurement is 932 mm (36.7 inches). For families with adults or tall teenagers regularly using the third row, the extra 46 mm of legroom on the longer bodies is the more noticeable functional difference.

Side-by-Side Summary

Which Vehicle Is Right for You?

For maximum cargo volume, the Suburban and Yukon XL are equal and lead the group. The choice between them comes down to trim content and brand.

The Yukon and Tahoe share a shorter wheelbase and are more manageable in urban environments while still providing three rows. The Tahoe’s third-row legroom is tighter than the longer-wheelbase models, which is relevant if adults regularly occupy that row.

All four vehicles offer the same engine options (5.3L V8, 6.2L V8, and available 3.0L Duramax Turbo-Diesel) and the same basic towing capability structure. Cargo is the primary differentiator between the short and long bodies.

Visit Mont-Royal Chevrolet Buick GMC in Montréal

The team at Mont-Royal Chevrolet Buick GMC in Montréal can help you compare all four full-size SUVs and determine which wheelbase and trim fits your family’s needs. Stop in to see the full lineup side by side.