Honda Civic Si vs Acura ILX Dimensions & Size Comparison
Comparing 2020 catalog dimensions. Honda Civic Si · Acura ILX
- Length177.3 in – 182.8 in
- Height54.7 in – 55.5 in
- Wheelbase106.3 in
- Curb weight2,889 lb – 2,906 lb
- Width70.8 in – 70.9 in
- Acura ILX width70.6 in
Which is bigger?
- Length: Honda Civic Si is 2.1 in shorter (180.1 in vs 182.2 in)
- Width: Acura ILX is 0.3 in narrower (70.8 in vs 70.6 in)
- Height: Acura ILX is 0.5 in taller (55.1 in vs 55.6 in)
- Wheelbase: Honda Civic Si has a 1.2 in longer wheelbase (106.3 in vs 105.1 in)
- Curb weight: Acura ILX is 224 lb heavier (2,898 lb vs 3,122 lb)
Biggest size differences
- Curb weight: Acura ILX is 224 lb heavier (2,898 lb vs 3,122 lb)
- Length: Honda Civic Si is 2.1 in shorter (180.1 in vs 182.2 in)
- Wheelbase: Honda Civic Si has a 1.2 in longer wheelbase (106.3 in vs 105.1 in)
- Height: Acura ILX is 0.5 in taller (55.1 in vs 55.6 in)
- Width: Acura ILX is 0.3 in narrower (70.8 in vs 70.6 in)
Practical verdicts
- Easier to fit in a short garageHonda Civic Si — Honda Civic Si is shorter by 2.1 in Check garage fit for Honda Civic Si · garage fit for Acura ILX
- Narrower for tight parkingAcura ILX — Acura ILX is narrower by 0.3 in
Dimension comparison
| Spec | Honda Civic Si | Acura ILX | Difference |
|---|---|---|---|
| Length | 180.1 in | 182.2 in | 2.1 in |
| Width | 70.8 in | 70.6 in | 0.3 in |
| Height | 55.1 in | 55.6 in | 0.5 in |
| Wheelbase | 106.3 in | 105.1 in | 1.2 in |
| Curb weight | 2,898 lb | 3,122 lb | 224 lb |
Values use trim midpoints when a model year lists a range (e.g. length 177.3 in – 182.8 in).
Compare by year
Overlapping model years with dimension data.
Already own one of these cars?
Jump to maintenance sizes on the vehicle page — tires, wipers, battery, and oil when present in the catalog.