Spec Sizes

Nissan Altima vs Kia Optima Dimensions & Size Comparison

Comparing 2009 catalog dimensions. Nissan Altima · Kia Optima

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

Side view
  • Length182.5 in – 189.8 in
  • Height55.3 in – 57.9 in
  • Wheelbase105.3 in – 109.3 in
  • Curb weight3,076 lb – 3,407 lb
Front / width
  • Width70.7 in
  • Kia Optima width71.1 in

Which is bigger?

  • Length: Nissan Altima is 2.8 in shorter (186.2 in vs 189.0 in)
  • Width: Nissan Altima is 0.4 in narrower (70.7 in vs 71.1 in)
  • Height: Kia Optima is 1.7 in taller (56.6 in vs 58.3 in)
  • Wheelbase: Nissan Altima has a 0.2 in longer wheelbase (107.3 in vs 107.1 in)
  • Curb weight: Nissan Altima is 16 lb heavier (3,242 lb vs 3,226 lb)

Biggest size differences

  1. Height: Kia Optima is 1.7 in taller (56.6 in vs 58.3 in)
  2. Length: Nissan Altima is 2.8 in shorter (186.2 in vs 189.0 in)
  3. Width: Nissan Altima is 0.4 in narrower (70.7 in vs 71.1 in)
  4. Curb weight: Nissan Altima is 16 lb heavier (3,242 lb vs 3,226 lb)
  5. Wheelbase: Nissan Altima has a 0.2 in longer wheelbase (107.3 in vs 107.1 in)

Practical verdicts

  • Easier to fit in a short garageNissan Altima — Nissan Altima is shorter by 2.8 in Check garage fit for Nissan Altima · garage fit for Kia Optima
  • Narrower for tight parkingNissan Altima — Nissan Altima is narrower by 0.4 in
  • Smaller exterior footprintNissan Altima — Based on length × width (Nissan Altima)

Dimension comparison

SpecNissan AltimaKia OptimaDifference
Length186.2 in189.0 in2.8 in
Width70.7 in71.1 in0.4 in
Height56.6 in58.3 in1.7 in
Wheelbase107.3 in107.1 in0.2 in
Curb weight3,242 lb3,226 lb16 lb

Values use trim midpoints when a model year lists a range (e.g. length 182.5 in – 189.8 in).

Compare by year

Overlapping model years with dimension data.

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