Spec Sizes

Cadillac CT4 vs Honda Civic Si Dimensions & Size Comparison

Comparing 2020 catalog dimensions. Cadillac CT4 · Honda Civic Si

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

Side view
  • Length187.2 in
  • Height56.0 in
  • Wheelbase109.3 in
  • Curb weight3,422 lb – 3,761 lb
Front / width
  • Width71.4 in
  • Honda Civic Si width70.8 in – 70.9 in

Which is bigger?

  • Length: Honda Civic Si is 7.1 in shorter (187.2 in vs 180.1 in)
  • Width: Honda Civic Si is 0.6 in narrower (71.4 in vs 70.8 in)
  • Height: Cadillac CT4 is 0.9 in taller (56.0 in vs 55.1 in)
  • Wheelbase: Cadillac CT4 has a 3.0 in longer wheelbase (109.3 in vs 106.3 in)
  • Curb weight: Cadillac CT4 is 694 lb heavier (3,592 lb vs 2,898 lb)

Biggest size differences

  1. Curb weight: Cadillac CT4 is 694 lb heavier (3,592 lb vs 2,898 lb)
  2. Length: Honda Civic Si is 7.1 in shorter (187.2 in vs 180.1 in)
  3. Wheelbase: Cadillac CT4 has a 3.0 in longer wheelbase (109.3 in vs 106.3 in)
  4. Height: Cadillac CT4 is 0.9 in taller (56.0 in vs 55.1 in)
  5. Width: Honda Civic Si is 0.6 in narrower (71.4 in vs 70.8 in)

Practical verdicts

  • Easier to fit in a short garageHonda Civic Si — Honda Civic Si is shorter by 7.1 in Check garage fit for Cadillac CT4 · garage fit for Honda Civic Si
  • Narrower for tight parkingHonda Civic Si — Honda Civic Si is narrower by 0.6 in
  • Smaller exterior footprintHonda Civic Si — Based on length × width (Honda Civic Si)

Dimension comparison

SpecCadillac CT4Honda Civic SiDifference
Length187.2 in180.1 in7.1 in
Width71.4 in70.8 in0.6 in
Height56.0 in55.1 in0.9 in
Wheelbase109.3 in106.3 in3.0 in
Curb weight3,592 lb2,898 lb694 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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