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Comparing The Dimensions Of The Third-Gen Cadillac CTS To The New CT6

We thought it a good exercise to compare the dimensions of the third-gen Cadillac CTS to those of the new Cadillac CT6, since many seem to be under the impression that the two vehicles are similar in size. So, without further ado, here they are.

Dimensional Brief: Third-Generation Cadillac CTS vs. First-Gen CT6 - Imperial
Metric 2016 Cadillac CTS 2016 Cadillac CT6 + / – CT6
Exterior
Wheelbase: 114.6 122.4 +7.8
Length: 195.5 204 +8.5
Height: 57.2 57.9 +0.7
Width: 72.2 74 +1.8
Track (front): 61.4 63.4 +2.0
Track (rear): 61.7 64 +2.3
Base curb weight: 3652 3657 +5.0
Weight distribution: 50 / 50 51 / 49 Not applicable
Interior
Legroom (front): 42.6 42.4 -0.2
Legroom (rear): 35.4 40.4 +5.0
Headroom (front): 39.2 40.1 +0.9
Headroom (rear): 37.5 38.1 +0.6
Shoulder room (front): 56.9 58.2 +1.3
Shoulder room (rear): 54.8 56.2 +1.4
Hip room (front): 53.8 55.9 +2.1
Hip room (rear): 53.3 53.5 +0.2
Metric 2016 Cadillac CTS 2016 Cadillac CT6 + / – CT6
Exterior
Wheelbase: 2910 3109 +199
Length: 4966 5184 +218
Height: 1454 1472 +18
Width: 1833 1879 +46
Track (front): 1560 1610 +50
Track (rear): 1588 1626 +38
Base curb weight: 1656 1659 +3
Weight distribution: 50 / 50 51 / 49 Not applicable
Interior
Legroom (front): 1081 1077 4
Legroom (rear): 899 1027 +128
Headroom (front): 995 1020 +25
Headroom (rear): 952 965 +13
Shoulder room (front): 1446 1410 -36
Shoulder room (rear): 1392 1427 +35
Hip room (front): 1366 1420 +54
Hip room (rear): 1353 1358 +5

Compared to the CTS, the CT6 is larger inside and out in every dimension except for front legroom, which is roughly the same as the CTS. The magnitude of the CT6 is most notable in overall vehicle length, wheelbase, and width, which translate to significant gains in shoulder room, rear-seat legroom and front-seat hip room.

The GM Authority Take

The difference in size between the CTS and CT6 shows a clear delineation in classes, while also clearly demonstrating that there is room for both a midsize (CTS and its forthcoming replacement) and full-size (CT6) sedan in the Cadillac lineup.

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Comments

  1. There was never a doubt that there is a clear delineation in class between the CTS and CT6. There is going to be a next Gen CTS despite the lackluster sales volume of the current model.
    Things become a little more muddled when comparing dimensions of the CT6 to the XTS.

    Reply
  2. I’m surprised there are only about 2″ difference in width. The CTS feels much narrower when sitting in the driver’s seat. The overall proportions of the CT6 seem just about right. If only there was a coupe…

    Reply
    1. Agree that a coupe version on the Omega platform could be really sexy.

      Reply
    2. It feels so narrow because the transmission tunnel is so large.

      Reply
  3. Which engines were used to determine the weight in both cars?

    Reply
    1. 2.0 turbo 4 cylinder.

      Reply
    2. It says base curb weight, so assuming the 2.0L Turbo?

      Reply
  4. Not sure who ever got the dimensions of bothe cars confused and plus they are in a completely different class or segment . The major reason for the extra rear legroom was for the Chinese market so Cadillac wouldn’t have to build an extended length version of the CT6 . GM did not want to have to do that .
    The comparison should be of the XTS vs. CT6 since Cadillac is going to hold on to the XTS longer than what was at one point going away in 2020 . I’m to lazy to look it up but i would bet the CT6 is 2-4 inches longer in over all length than the XTS .

    Reply
  5. Cadillac should have a CT8 and a new design theme by 2025 and the XTS will be long gone by than…..we’ll see.

    Reply

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