Spec Sizes

Cadillac ATS vs Buick Regal Dimensions & Size Comparison

Comparing 2015 catalog dimensions. Cadillac ATS · Buick Regal

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

Side view
  • Length183.6 in
  • Height54.8 in
  • Wheelbase109.3 in
  • Ground clearance5.9 in
  • Curb weight3,411 lb – 3,693 lb
Front / width
  • Width72.5 in
  • Buick Regal width73.1 in

Which is bigger?

  • Length: Cadillac ATS is 6.6 in shorter (183.6 in vs 190.2 in)
  • Width: Cadillac ATS is 0.6 in narrower (72.5 in vs 73.1 in)
  • Height: Buick Regal is 3.4 in taller (54.8 in vs 58.2 in)
  • Wheelbase: Cadillac ATS has a 1.5 in longer wheelbase (109.3 in vs 107.8 in)
  • Ground clearance: Cadillac ATS has 0.4 in more ground clearance (5.9 in vs 5.5 in)
  • Curb weight: Buick Regal is 157 lb heavier (3,552 lb vs 3,709 lb)

Biggest size differences

  1. Ground clearance: Cadillac ATS has 0.4 in more ground clearance (5.9 in vs 5.5 in)
  2. Height: Buick Regal is 3.4 in taller (54.8 in vs 58.2 in)
  3. Curb weight: Buick Regal is 157 lb heavier (3,552 lb vs 3,709 lb)
  4. Length: Cadillac ATS is 6.6 in shorter (183.6 in vs 190.2 in)
  5. Wheelbase: Cadillac ATS has a 1.5 in longer wheelbase (109.3 in vs 107.8 in)

Practical verdicts

  • Easier to fit in a short garageCadillac ATS — Cadillac ATS is shorter by 6.6 in Check garage fit for Cadillac ATS · garage fit for Buick Regal
  • Narrower for tight parkingCadillac ATS — Cadillac ATS is narrower by 0.6 in
  • More ground clearanceCadillac ATS — Cadillac ATS has 0.4 in more clearance
  • Smaller exterior footprintCadillac ATS — Based on length × width (Cadillac ATS)

Dimension comparison

SpecCadillac ATSBuick RegalDifference
Length183.6 in190.2 in6.6 in
Width72.5 in73.1 in0.6 in
Height54.8 in58.2 in3.4 in
Wheelbase109.3 in107.8 in1.5 in
Ground clearance5.9 in5.5 in0.4 in
Curb weight3,552 lb3,709 lb157 lb

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

Compare by year

Overlapping model years with dimension data.

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