Spec Sizes

Audi A3 vs Honda Civic Si Dimensions & Size Comparison

Comparing 2023 vs 2022 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
  • Length176.9 in
  • Height56.2 in
  • Wheelbase103.5 in
  • Curb weight3,329 lb – 3,494 lb
Front / width
  • Width71.5 in
  • Honda Civic Si width70.9 in

Which is bigger?

  • Length: Audi A3 is 7.1 in shorter (176.9 in vs 184.0 in)
  • Width: Honda Civic Si is 0.6 in narrower (71.5 in vs 70.9 in)
  • Height: Audi A3 is 0.7 in taller (56.2 in vs 55.5 in)
  • Wheelbase: Honda Civic Si has a 4.2 in longer wheelbase (103.5 in vs 107.7 in)
  • Curb weight: Audi A3 is 455 lb heavier (3,412 lb vs 2,957 lb)

Biggest size differences

  1. Curb weight: Audi A3 is 455 lb heavier (3,412 lb vs 2,957 lb)
  2. Wheelbase: Honda Civic Si has a 4.2 in longer wheelbase (103.5 in vs 107.7 in)
  3. Length: Audi A3 is 7.1 in shorter (176.9 in vs 184.0 in)
  4. Height: Audi A3 is 0.7 in taller (56.2 in vs 55.5 in)
  5. Width: Honda Civic Si is 0.6 in narrower (71.5 in vs 70.9 in)

Practical verdicts

  • Easier to fit in a short garageAudi A3 — Audi A3 is shorter by 7.1 in Check garage fit for Audi A3 · garage fit for Honda Civic Si
  • Narrower for tight parkingHonda Civic Si — Honda Civic Si is narrower by 0.6 in
  • Smaller exterior footprintAudi A3 — Based on length × width (Audi A3)

Dimension comparison

SpecAudi A3Honda Civic SiDifference
Length176.9 in184.0 in7.1 in
Width71.5 in70.9 in0.6 in
Height56.2 in55.5 in0.7 in
Wheelbase103.5 in107.7 in4.2 in
Curb weight3,412 lb2,957 lb455 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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