Cadillac XT4 vs. Mercedes-Benz GLA And GLB: Dimensional Comparison

Mercedes-Benz revealed two new compact crossovers for its U.S. lineup last year – the new GLB-Class and GLA-Class. Both promise a combination of luxury, refinement, and practicality, all without overdoing it on the dimensions, thereby taking on the Cadillac XT4 – which is rapidly becoming one of Cadillac’s best-selling models. As such, we’ve decided to put them up side-by-side to see how the new German entries stack up from a size standpoint.

Exterior dimensions are important in this segment, and for a number of reasons. Not only do they help with things like maneuverability and ease of driving, but compact crossover buyers will also have an easier time finding parking and fitting the vehicle in their garage if the vehicle in question isn’t gargantuan. In other words, these models are meant to be compact, and for a reason – as their buyers prefer a smaller vehicle. Meanwhile, interior room and cargo room are even more important, with an extra inch for passengers or an extra cubic-foot for storage sometimes making all the difference.

To note, the Cadillac XT4 was first introduced for the 2019 model year, and is built on the E2 platform. The XT4 is offered in three trim levels here in the U.S., including the Luxury, Premium Luxury, and Sport.

Exterior Dimensions

Sizing for the Cadillac XT4 includes a 109.4-inch wheelbase, 181.1-inch overall length, 74.1-inch overall width, and 64.1-inch overall height. To note, the overall width excludes the width added by the sideview mirrors, while the overall height includes the roof rails. What’s more, the XT4’s front track is slightly wider than the rear, measured at 63.2 inches in front and 63.1 inches in back.

Meanwhile, the Mercedes-Benz GLB stands apart as larger than the Cadillac XT4 in just about every dimension. Compared to the Caddy, the Mercedes GLB gets an extra two inches for the wheelbase, 1.3 inches in overall length, and 1.2 inches in overall height. The front and rear tracks are also marginally wider than those of the XT4. However, the GLB is also significantly narrower, losing nearly two inches in overall width compared to the Cadillac XT4, which is one of the widest vehicles in its segment.

Finally, we have the new Mercedes-Benz GLA-Class, which was introduced in December 2019. Compared to the XT4, the Mercedes GLA is smaller in every dimension, with a wheelbase that’s two inches shorter, an overall length that’s a whopping 7.4 inches shorter, an overall width that’s 1.9 inches narrower, and an overall height that’s 0.7 inches lower. Front and rear tracks match that of those of the GLB-Class, which means they are marginally larger than those of the Cadillac XT4.

Interior Dimensions

As for interior dimensions, the Cadillac XT4 offers 39.4 inches of headroom in front and 38.3 inches of headroom in the rear, 40.4 inches of legroom in front and 39.5 inches of legroom in back, and 57 inches of shoulder room in front with 55.1 inches of shoulder room in back.

Meanwhile, the Mercedes-Benz GLB stands out for its optional third-row seating configuration. Compared to the XT4, the standard five-seat GLB has an extra 1.3 inches in front headroom and one inch more headroom in back, one extra inch of legroom in front and 1.4 inches less legroom in the rear, and 1.1 inches less shoulder room in front with 0.2 inches less shoulder room in the rear.

Finally, comparing the XT4 to the new Mercedes-Benz GLA shows the GLA with 1.4 inches more headroom in front and 0.2 inches less headroom in the rear, 0.7 inches more front legroom and 1.1 inches less rear legroom, and 1.1 inches less shoulder room in front with 0.3 inches less shoulder room in back.

Cargo Dimensions

To round off this comparison, we’re taking a look at cargo room, both with the rear seats folded and with them up, where possible.

The Cadillac XT4 comes with 22.5 cubic feet behind the rear bench, and 48.9 cubic-feet with the rear seats folded.

Then we have the five-seater Mercedes-Benz GLB, which comes with 62 cubic feet of space with the rear seats folded, 13.1 cubic feet more than the Cadillac XT4. Specs on cargo room behind the second row have yet to be announced for the latest GLB model. In its seven-passenger configuration, the GLB comes with 56.7 cubic-feet behind the first row, 24 cubic-feet behind the second row, and 5.1 cubic-feet behind the third row.

Lastly, the new Mercedes-Benz GLA comes with 15.4 cubic-feet of space behind the second row, 7.1 cubic-feet less than that of the Cadillac XT4. Cargo space behind with the rear seats folded has yet to be announced, but for reference, the previous model year offered 43.6 cubic-feet.

Stay tuned for more comparisons in the future, and make sure to subscribe to Cadillac Society for more Cadillac XT4 news and around-the-clock Cadillac news coverage.