Cadillac CTS Curb Weight: 3,620 lbs to 3,887 lbs

Across the 2 body styles recorded in both layouts, four-wheel drive adds between 132 lbs and 157 lbs — roughly 3.9% of the two-wheel-drive weight. The transfer case, front differential and driveshaft account for that in every case, so the penalty barely moves with cab size.

The lightest 2015 record is 3,620 lbs; the lightest 2020 record is 3,620 lbs — unchanged.

At the top of the range the 2020 file reaches 3,887 lbs against 3,984 lbs in 2015, a 97 lbs reduction — driven by which configurations exist, not by the same truck gaining mass.

NHTSA records a 50/50 distribution, so the 3,620 lbs splits to roughly 1,810 lbs on the front axle and 1,810 lbs on the rear.

The two axles are not the same width either: 61.4 in of track at the front against 61.8 in at the rear, 0.4 in narrower in front.