Spec Sizes

Kia Optima vs Buick Regal Dimensions & Size Comparison

Comparing 2012 catalog dimensions. Kia Optima · Buick Regal

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

Side view
  • Length190.7 in
  • Height57.3 in
  • Wheelbase110.0 in
  • Curb weight3,206 lb – 3,385 lb
Front / width
  • Width72.1 in
  • Buick Regal width73.1 in

Which is bigger?

  • Length: Buick Regal is 0.5 in shorter (190.7 in vs 190.2 in)
  • Width: Kia Optima is 1.0 in narrower (72.1 in vs 73.1 in)
  • Height: Buick Regal is 0.9 in taller (57.3 in vs 58.2 in)
  • Wheelbase: Kia Optima has a 2.2 in longer wheelbase (110.0 in vs 107.8 in)
  • Curb weight: Buick Regal is 360 lb heavier (3,296 lb vs 3,655 lb)

Biggest size differences

  1. Curb weight: Buick Regal is 360 lb heavier (3,296 lb vs 3,655 lb)
  2. Wheelbase: Kia Optima has a 2.2 in longer wheelbase (110.0 in vs 107.8 in)
  3. Height: Buick Regal is 0.9 in taller (57.3 in vs 58.2 in)
  4. Width: Kia Optima is 1.0 in narrower (72.1 in vs 73.1 in)
  5. Length: Buick Regal is 0.5 in shorter (190.7 in vs 190.2 in)

Practical verdicts

  • Easier to fit in a short garageBuick Regal — Buick Regal is shorter by 0.5 in Check garage fit for Kia Optima · garage fit for Buick Regal
  • Narrower for tight parkingKia Optima — Kia Optima is narrower by 1.0 in
  • Smaller exterior footprintKia Optima — Based on length × width (Kia Optima)

Dimension comparison

SpecKia OptimaBuick RegalDifference
Length190.7 in190.2 in0.5 in
Width72.1 in73.1 in1.0 in
Height57.3 in58.2 in0.9 in
Wheelbase110.0 in107.8 in2.2 in
Curb weight3,296 lb3,655 lb360 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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