Cadillac XTS vs Buick Regal Sportback Dimensions & Size Comparison

Comparing 2018 catalog dimensions. Cadillac XTS · Buick Regal Sportback

Same scale for both vehicles. Generic silhouette — proportional to measured length, height, width, wheelbase, and clearance.

Side view
  • Length200.9 in
  • Height59.4 in
  • Wheelbase111.7 in
  • Ground clearance5.0 in
  • Curb weight4,028 lb
Front / width
  • Width72.9 in
  • Buick Regal Sportback width73.3 in

Which is bigger?

  • Length: Buick Regal Sportback is 8.0 in shorter (200.9 in vs 192.9 in)
  • Width: Cadillac XTS is 0.4 in narrower (72.9 in vs 73.3 in)
  • Height: Cadillac XTS is 2.1 in taller (59.4 in vs 57.3 in)
  • Wheelbase: Cadillac XTS has a 0.3 in longer wheelbase (111.7 in vs 111.4 in)
  • Curb weight: Cadillac XTS is 106 lb heavier (4,028 lb vs 3,922 lb)

Biggest size differences

  1. Length: Buick Regal Sportback is 8.0 in shorter (200.9 in vs 192.9 in)
  2. Height: Cadillac XTS is 2.1 in taller (59.4 in vs 57.3 in)
  3. Curb weight: Cadillac XTS is 106 lb heavier (4,028 lb vs 3,922 lb)
  4. Width: Cadillac XTS is 0.4 in narrower (72.9 in vs 73.3 in)
  5. Wheelbase: Cadillac XTS has a 0.3 in longer wheelbase (111.7 in vs 111.4 in)

Practical verdicts

  • Easier to fit in a short garageBuick Regal SportbackBuick Regal Sportback is shorter by 8.0 in Check garage fit for Cadillac XTS · garage fit for Buick Regal Sportback
  • Narrower for tight parkingCadillac XTSCadillac XTS is narrower by 0.4 in
  • Smaller exterior footprintBuick Regal SportbackBased on length × width (Buick Regal Sportback)

Dimension comparison

SpecCadillac XTSBuick Regal SportbackDifference
Length200.9 in192.9 in8.0 in
Width72.9 in73.3 in0.4 in
Height59.4 in57.3 in2.1 in
Wheelbase111.7 in111.4 in0.3 in
Ground clearance5.0 in
Curb weight4,028 lb3,922 lb106 lb

Values use trim midpoints when a model year lists a range.

Compare by year

Overlapping model years with dimension data.

Already own one of these cars?

Jump to maintenance sizes on the vehicle page — tires, wipers, battery, and oil when present in the catalog.