Spec Sizes

Kia Optima vs Buick Regal Dimensions & Size Comparison

Comparing 2004 catalog dimensions. Kia Optima · Buick Regal

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

Side view
  • Length185.8 in
  • Height55.5 in
  • Wheelbase106.3 in
  • Curb weight3,279 lb – 3,301 lb
Front / width
  • Width71.5 in
  • Buick Regal width72.7 in

Which is bigger?

  • Length: Kia Optima is 10.4 in shorter (185.8 in vs 196.2 in)
  • Width: Kia Optima is 1.2 in narrower (71.5 in vs 72.7 in)
  • Height: Buick Regal is 1.1 in taller (55.5 in vs 56.6 in)
  • Wheelbase: Buick Regal has a 2.7 in longer wheelbase (106.3 in vs 109.0 in)
  • Curb weight: Buick Regal is 181 lb heavier (3,290 lb vs 3,471 lb)

Biggest size differences

  1. Length: Kia Optima is 10.4 in shorter (185.8 in vs 196.2 in)
  2. Curb weight: Buick Regal is 181 lb heavier (3,290 lb vs 3,471 lb)
  3. Wheelbase: Buick Regal has a 2.7 in longer wheelbase (106.3 in vs 109.0 in)
  4. Height: Buick Regal is 1.1 in taller (55.5 in vs 56.6 in)
  5. Width: Kia Optima is 1.2 in narrower (71.5 in vs 72.7 in)

Practical verdicts

  • Easier to fit in a short garageKia Optima — Kia Optima is shorter by 10.4 in Check garage fit for Kia Optima · garage fit for Buick Regal
  • Narrower for tight parkingKia Optima — Kia Optima is narrower by 1.2 in
  • Smaller exterior footprintKia Optima — Based on length × width (Kia Optima)

Dimension comparison

SpecKia OptimaBuick RegalDifference
Length185.8 in196.2 in10.4 in
Width71.5 in72.7 in1.2 in
Height55.5 in56.6 in1.1 in
Wheelbase106.3 in109.0 in2.7 in
Curb weight3,290 lb3,471 lb181 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.