Spec Sizes

Audi A3 vs Honda Civic Si Dimensions & Size Comparison

Comparing 2019 catalog dimensions. Audi A3 · Honda Civic Si

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

Side view
  • Length174.1 in – 175.5 in
  • Height55.5 in – 55.7 in
  • Wheelbase102.2 in – 103.8 in
  • Ground clearance6.0 in
  • Curb weight3,197 lb – 3,660 lb
Front / width
  • Width70.6 in – 70.7 in
  • Honda Civic Si width70.8 in – 70.9 in

Which is bigger?

  • Length: Audi A3 is 5.3 in shorter (174.8 in vs 180.1 in)
  • Width: Audi A3 is 0.2 in narrower (70.7 in vs 70.8 in)
  • Height: Audi A3 is 0.5 in taller (55.6 in vs 55.1 in)
  • Wheelbase: Honda Civic Si has a 3.3 in longer wheelbase (103.0 in vs 106.3 in)
  • Curb weight: Audi A3 is 531 lb heavier (3,429 lb vs 2,898 lb)

Biggest size differences

  1. Curb weight: Audi A3 is 531 lb heavier (3,429 lb vs 2,898 lb)
  2. Wheelbase: Honda Civic Si has a 3.3 in longer wheelbase (103.0 in vs 106.3 in)
  3. Length: Audi A3 is 5.3 in shorter (174.8 in vs 180.1 in)
  4. Height: Audi A3 is 0.5 in taller (55.6 in vs 55.1 in)
  5. Width: Audi A3 is 0.2 in narrower (70.7 in vs 70.8 in)

Practical verdicts

  • Easier to fit in a short garageAudi A3 — Audi A3 is shorter by 5.3 in Check garage fit for Audi A3 · garage fit for Honda Civic Si
  • Narrower for tight parkingAudi A3 — Audi A3 is narrower by 0.2 in
  • Smaller exterior footprintAudi A3 — Based on length × width (Audi A3)

Dimension comparison

SpecAudi A3Honda Civic SiDifference
Length174.8 in180.1 in5.3 in
Width70.7 in70.8 in0.2 in
Height55.6 in55.1 in0.5 in
Wheelbase103.0 in106.3 in3.3 in
Ground clearance6.0 in——
Curb weight3,429 lb2,898 lb531 lb

Values use trim midpoints when a model year lists a range (e.g. length 174.1 in – 175.5 in).

Compare by year

Overlapping model years with dimension data.

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