Spec Sizes

Buick Regal vs Kia Optima Dimensions & Size Comparison

Comparing 2015 catalog dimensions. Buick Regal · Kia Optima

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

Side view
  • Length190.2 in
  • Height58.0 in – 58.4 in
  • Wheelbase107.8 in
  • Ground clearance5.5 in
  • Curb weight3,692 lb – 3,725 lb
Front / width
  • Width73.1 in
  • Kia Optima width72.1 in

Which is bigger?

  • Length: Buick Regal is 0.5 in shorter (190.2 in vs 190.7 in)
  • Width: Kia Optima is 1.0 in narrower (73.1 in vs 72.1 in)
  • Height: Buick Regal is 1.1 in taller (58.2 in vs 57.1 in)
  • Wheelbase: Kia Optima has a 2.2 in longer wheelbase (107.8 in vs 110.0 in)
  • Ground clearance: Buick Regal has 0.4 in more ground clearance (5.5 in vs 5.1 in)
  • Curb weight: Buick Regal is 356 lb heavier (3,709 lb vs 3,353 lb)

Biggest size differences

  1. Curb weight: Buick Regal is 356 lb heavier (3,709 lb vs 3,353 lb)
  2. Ground clearance: Buick Regal has 0.4 in more ground clearance (5.5 in vs 5.1 in)
  3. Wheelbase: Kia Optima has a 2.2 in longer wheelbase (107.8 in vs 110.0 in)
  4. Height: Buick Regal is 1.1 in taller (58.2 in vs 57.1 in)
  5. Width: Kia Optima is 1.0 in narrower (73.1 in vs 72.1 in)

Practical verdicts

  • Easier to fit in a short garageBuick Regal — Buick Regal is shorter by 0.5 in Check garage fit for Buick Regal · garage fit for Kia Optima
  • 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

SpecBuick RegalKia OptimaDifference
Length190.2 in190.7 in0.5 in
Width73.1 in72.1 in1.0 in
Height58.2 in57.1 in1.1 in
Wheelbase107.8 in110.0 in2.2 in
Ground clearance5.5 in5.1 in0.4 in
Curb weight3,709 lb3,353 lb356 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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