The new Cadillac XT6 is a much-needed addition to the luxury brand’s vehicle lineup. Featuring three rows of seating for either six of seven passengers, depending on the configuration, the “midsize plus” crossover slots above the midsize Cadillac XT5 and below the full-size Escalade. We recently got our hands on XT6 specs, which enables us to take a look at how these mechanically-related crossovers compare in terms of size and dimensions in todays’s installment of the GM Authority Dimensional Comparison.
Before we get into the nitty gritty, let’s set a baseline to better understand what we’re dealing with here. All of the models that are part of this Dimensional Comparison are based on the GM C1 platform (pronounced “Chi”). However, there are three different versions of the C1 architecture.
The first is the original, short-wheelbase version. This one has a wheelbase of 112.5 inches and underpins the Cadillac XT5 and the second-generation GMC Acadia. The second is the long-wheelbase version with a wheelbase of 120.9 inches. This one underpins the second iterations of the Chevrolet Traverse and Buick Enclave. And that brings us to the third C1 platform variant.
The third version is based on the original, short-wheelbase version of C1, but with a few minor improvements, the most notable of which (on paper) is the addition of 0.2 inches to the wheelbase. It’s this platform that the Cadillac XT6 is based on.
The Cadillac XT6 features a longer, more traditional roof line and a longer rear overhang when compared to the XT5. Both of those elements enable the XT6 its two biggest differentiators – a third row and significantly more cargo room.
Compared to the XT5, the XT6 is 9.3 inches longer, 2.3 inches wider and 2.9 inches taller, while having a wheelbase that’s 0.2 inches (5 mm) longer. It also has wider front and rear tracks. That story repeats itself when it comes to the GMC Acadia: the XT6 is 5.2 inches longer, 1.9 inches wider, 2.9 inches taller, with a wheelbase that’s 0.2 inches longer. The XT6 has wider tracks – 1.9 inches in the front and 1.7 in the rear. Before you ask, the XT6 does – in fact – have a wider track at the front than at the rear.
Meanwhile, the XT6 is notably smaller than the gargantuan Chevy Traverse in all dimensions. Compared to the Traverse, the XT6 has a wheelbase that’s 8.2 inches shorter, overall length is down 5.5 inches, width is down 1.3 inches, height is down 1.8 inches, and the tracks are down 0.9 and 0.8 inches, respectively.
Inside, the Cadillac XT5 and XT6 use identical cockpits. For this reason, they have very similar dimensions in the first row. Things change significantly from there on forward. Compared to the XT5, the XT6 has more headroom in both the first and second row as well as identical first row legroom but slightly less second row legroom (in order to make room for that third row). First room shoulder room is identical for the XT5 and XT6, but the XT6 has more second row shoulder room. The same holds true when it comes to hip room: both the XT5 and XT6 have the same amounts of hip room in the first row, but the XT6 has more in the second row.
|Total maximum passengers:||5||6 or 7||6 or 7||7 or 8|
|Second row:||3||2 or 3||2 or 3||2 or 3|
Compared to the GMC Acadia, the XT6 has less headroom in the first and second rows, and an identical amount in the third row. First row legroom is nearly identical, but legroom in the second and third rows trails that of the Acadia. Shoulder room also trails that of the Acadia in every row, while hip room is higher in the XT6 in both the first and second rows, while being lower in the third row.
Compared to the Chevy Traverse, the XT6 has more second row legroom. All other interior metrics are down compared to the biggest Chevy.
|First row headroom:||38.4||39.8||40.3||41.3|
|Second row headroom:||36||39.1||39.6||40|
|Third row headroom:||N/A||37.2||37.2||38.2|
|First row legroom:||41.2||41.2||41||41|
|Second row legroom:||39.5||39.1||39.7||38.4|
|Third row legroom:||N/A||29.5||31.1||33.5|
|First row shoulder room:||58.3||58.3||59.4||62.1|
|Second row shoulder room:||56.2||57.4||58.7||62.2|
|Third row shoulder room:||N/A||53.5||54.3||57.5|
|First row hip room:||56||56.1||55.7||58.1|
|Second row hip room:||54.7||55.7||53.3||56.9|
|Third row hip room:||N/A||39.5||42.9||48.5|
The cargo department is where the differences between these four crossovers truly come to light.
The XT5 has notably less cargo volume than the XT6 – both with the rear seat upright and folded. The GMC Acadia features similar levels of cargo capacity as the XT6, while the huge Traverse reigns supreme, demonstrating the palatial cargo prowess of long-wheelbase models.
|Behind first row:||63||78.7||79||98.2|
|Behind second row:||30||43.1||41.7||58.1|
|Behind third row:||N/A||12.6||12.8||23|
About The Numbers
- Exterior dimensions in inches (imperial) or millimeters (metric). Height measurements do not include luggage/roof rack.
- Interior dimensions in inches (imperial) or millimeters (metric). Measurements taken with models with sunroof.
- Seating capacity measurements represent people.
- Cargo volume in cubic feet (imperial) or liters (metric).
- Buick Enclave not included in comparison since its dimensions are nearly identical to those of Chevrolet Traverse.
For those who prefer metric units, we have just the thing.
|First row headroom:||975||1010||1024||1049|
|Second row headroom:||914||993||1006||1016|
|Third row headroom:||N/A||945||945||970|
|First row legroom:||1046||1046||1041||1042|
|Second row legroom:||1003||994||1008||985|
|Third row legroom:||N/A||750||790||851|
|First row shoulder room:||1481||1482||1509||1577|
|Second row shoulder room:||1427||1459||1491||1580|
|Third row shoulder room:||N/A||1360||1379||1460|
|First row hip room:||1422||1424||1415||1476|
|Second row hip room:||1389||1416||1354||1445|
|Third row hip room:||N/A||1003||1090||1232|
|Behind first row:||1784||2228||2237||2781|
|Behind second row:||849||1220||1181||1645|
|Behind third row:||N/A||356||362||651|
About Cadillac XT6
The Cadillac XT6 is a three-row premium luxury crossover. The model represents a new addition to the Cadillac model range as part of the brand's crossover expansion strategy. It slots above the the compact Cadillac XT4 and midsize Cadillac XT5 in the Cadillac crossover SUV lineup. Its size classification can be best described as "midsize plus", as it is bigger than midsize but not big enough to be classified as full-size.
The XT6 was announced at the 2019 North American International Auto Show in January 2019 and goes on sale in the spring of the 2019 calendar year as a 2020 model. It is based on the regular-length variant of the GM C1 platform shared with the XT5, but with more rear overhang than the XT5. That extended rear overhang enables it to accommodate a third row. The rest of the vehicle is very similar to the XT5, including its engine, transmission, and cockpit.
The XT5 is produced at the following GM plants globally:
- GM Spring Hill factory in Tennessee or GM Lansing Delta plant operated by GM USA supplying North American markets
- Cadillac China Jinqiao factory operated by Shanghai-GM supplying the Chinese market