Spec Sizes

Kia Optima vs Buick Regal Dimensions & Size Comparison

Comparing 2015 vs 2017 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
  • Height57.1 in
  • Wheelbase110.0 in
  • Ground clearance5.1 in
  • Curb weight3,237 lb – 3,468 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 1.1 in taller (57.1 in vs 58.2 in)
  • Wheelbase: Kia Optima has a 2.2 in longer wheelbase (110.0 in vs 107.8 in)
  • Ground clearance: Buick Regal has 0.4 in more ground clearance (5.1 in vs 5.5 in)
  • Curb weight: Buick Regal is 438 lb heavier (3,353 lb vs 3,791 lb)

Biggest size differences

  1. Curb weight: Buick Regal is 438 lb heavier (3,353 lb vs 3,791 lb)
  2. Ground clearance: Buick Regal has 0.4 in more ground clearance (5.1 in vs 5.5 in)
  3. Wheelbase: Kia Optima has a 2.2 in longer wheelbase (110.0 in vs 107.8 in)
  4. Height: Buick Regal is 1.1 in taller (57.1 in vs 58.2 in)
  5. Width: Kia Optima is 1.0 in narrower (72.1 in vs 73.1 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
  • More ground clearanceBuick Regal — Buick Regal has 0.4 in more clearance
  • 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
Height57.1 in58.2 in1.1 in
Wheelbase110.0 in107.8 in2.2 in
Ground clearance5.1 in5.5 in0.4 in
Curb weight3,353 lb3,791 lb438 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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