Spec Sizes

Infiniti Q50 vs Kia Optima Dimensions & Size Comparison

Comparing 2017 catalog dimensions. Infiniti Q50 · Kia Optima

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

Side view
  • Length188.3 in – 189.1 in
  • Height56.8 in – 57.2 in
  • Wheelbase112.2 in
  • Ground clearance5.0 in – 5.1 in
  • Curb weight3,666 lb – 4,005 lb
Front / width
  • Width71.8 in
  • Kia Optima width73.2 in

Which is bigger?

  • Length: Infiniti Q50 is 2.4 in shorter (188.7 in vs 191.1 in)
  • Width: Infiniti Q50 is 1.4 in narrower (71.8 in vs 73.2 in)
  • Height: Kia Optima is 0.7 in taller (57.0 in vs 57.7 in)
  • Wheelbase: Infiniti Q50 has a 1.8 in longer wheelbase (112.2 in vs 110.4 in)
  • Ground clearance: Kia Optima has 0.3 in more ground clearance (5.0 in vs 5.3 in)
  • Curb weight: Infiniti Q50 is 429 lb heavier (3,836 lb vs 3,407 lb)

Biggest size differences

  1. Curb weight: Infiniti Q50 is 429 lb heavier (3,836 lb vs 3,407 lb)
  2. Ground clearance: Kia Optima has 0.3 in more ground clearance (5.0 in vs 5.3 in)
  3. Width: Infiniti Q50 is 1.4 in narrower (71.8 in vs 73.2 in)
  4. Wheelbase: Infiniti Q50 has a 1.8 in longer wheelbase (112.2 in vs 110.4 in)
  5. Length: Infiniti Q50 is 2.4 in shorter (188.7 in vs 191.1 in)

Practical verdicts

  • Easier to fit in a short garageInfiniti Q50 — Infiniti Q50 is shorter by 2.4 in Check garage fit for Infiniti Q50 · garage fit for Kia Optima
  • Narrower for tight parkingInfiniti Q50 — Infiniti Q50 is narrower by 1.4 in
  • More ground clearanceKia Optima — Kia Optima has 0.3 in more clearance
  • Smaller exterior footprintInfiniti Q50 — Based on length × width (Infiniti Q50)

Dimension comparison

SpecInfiniti Q50Kia OptimaDifference
Length188.7 in191.1 in2.4 in
Width71.8 in73.2 in1.4 in
Height57.0 in57.7 in0.7 in
Wheelbase112.2 in110.4 in1.8 in
Ground clearance5.0 in5.3 in0.3 in
Curb weight3,836 lb3,407 lb429 lb

Values use trim midpoints when a model year lists a range (e.g. length 188.3 in – 189.1 in).

Compare by year

Overlapping model years with dimension data.

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