Compare Dimensions Side by Side
2021 Audi A3 Sportback vs. 2018 Mercedes-Benz A-class

Compare the size of two cars side by side and see their differences at a glance. Simply enter the vehicle names, and our tool creates a clear visual comparison of their length, width, and height. This makes it easy to find out which car is longer, wider, or taller, and helps you better understand their overall proportions. Whether you are checking if a car will fit in your garage, comparing everyday models, or exploring larger SUVs, this tool provides a straightforward way to see all key dimensions in one place.

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      Here’s how the 2021 Audi A3 Sportback and the 2018 Mercedes-Benz A-class compare in size:

      In terms of length, the 2018 Mercedes-Benz A-class comes in at 4445 mm (175.00 in), giving it a 102 mm (4.02 in) (2.3 %) advantage over the 2021 Audi A3 Sportback at 4343 mm (170.98 in). Looking at width, the 2018 Mercedes-Benz A-class stretches to 1850 mm (72.83 in), making it 34 mm (1.34 in) (1.8 %) wider than the 2021 Audi A3 Sportback at 1816 mm (71.50 in). As for height, the 2021 Audi A3 Sportback stands at 1458 mm (57.40 in), giving it an extra 6 mm (0.24 in) (0.4 %) compared to the 2018 Mercedes-Benz A-class at 1452 mm (57.17 in).

      Overall, the 2021 Audi A3 Sportback is taller than the 2018 Mercedes-Benz A-class, while the 2018 Mercedes-Benz A-class is longer and wider than the 2021 Audi A3 Sportback.

      Length
      4343 mm171.0 in
      4445 mm175.0 in
      Width
      1816 mm71.5 in
      1850 mm72.8 in
      Height
      1458 mm57.4 in
      1452 mm57.2 in

      2021 Audi A3 Sportback Preview
      4343 mm171.0 in πŸ”΄ -102 mm-4.0 in (-2.3%)
      2018 Mercedes-Benz A-class Preview
      4445 mm175.0 in 🟒 +102 mm+4.0 in (+2.3%)
      2021 Audi A3 Sportback Preview
      1816 mm71.5 in πŸ”΄ -34 mm-1.3 in (-1.8%)
      2018 Mercedes-Benz A-class Front View
      1850 mm72.8 in 🟒 +34 mm+1.3 in (+1.9%)
      2021 Audi A3 Sportback Preview
      1458 mm57.4 in 🟒 +6 mm+0.2 in (+0.4%)
      2018 Mercedes-Benz A-class Rear View
      1452 mm57.2 in πŸ”΄ -6 mm-0.2 in (-0.4%)
      2021 Audi A3 Sportback
      2018 Mercedes-Benz A-class

      Side-by-Side Specs: Dimensions, Weight & More

      General Info

      Body Style:

      Hatchback
      Hatchback

      Model Year:

      2021
      2018

      Production:

      2020-2024 Discontinued Model
      2018-2022 Discontinued Model

      Dimensions

      Length:

      4343 mm171.0 in
      πŸ”΄ -102 mm-4.0 in (-2.3%) - πŸ”΄ -76 mm-3.0 in (-1.7%)
      4419-4445 mm174.0-175.0 in
      🟒 +76 mm+3.0 in (+1.7%) - 🟒 +102 mm+4.0 in (+2.3%)

      Width:

      1816 mm71.5 in
      πŸ”΄ -34 mm-1.3 in (-1.8%) - 🟒 +20 mm+0.8 in (+1.1%)
      1796-1850 mm70.7-72.8 in
      πŸ”΄ -20 mm-0.8 in (-1.1%) - 🟒 +34 mm+1.3 in (+1.9%)

      Width (Folded Mirrors):

      -
      -

      Width (Opened Mirrors):

      1984 mm78.1 in
      πŸ”΄ -8 mm-0.3 in (-0.4%)
      1992 mm78.4 in
      🟒 +8 mm+0.3 in (+0.4%)

      Height:

      1449-1458 mm57.0-57.4 in
      πŸ”΄ -3 mm-0.1 in (-0.2%) - 🟒 +53 mm+2.1 in (+3.8%)
      1405-1452 mm55.3-57.2 in
      πŸ”΄ -53 mm-2.1 in (-3.6%) - 🟒 +3 mm+0.1 in (+0.2%)

      Ground Clearance:

      -
      81-104 mm3.2-4.1 in

      Trunk Capacity:

      280-380 liter9.9-13.4 cu ft
      πŸ”΄ -90 liter-3.2 cu ft (-24.3%) - 🟒 +70 liter+2.5 cu ft (+22.6%)
      310-370 liter10.9-13.1 cu ft
      πŸ”΄ -70 liter-2.5 cu ft (-18.4%) - 🟒 +90 liter+3.2 cu ft (+32.1%)

      Trunk Capacity (Max):

      1100-1200 liter38.8-42.4 cu ft
      πŸ”΄ -110 liter-3.9 cu ft (-9.1%) - 🟒 +830 liter+29.3 cu ft (+224.3%)
      370-1210 liter13.1-42.7 cu ft
      πŸ”΄ -830 liter-29.3 cu ft (-69.2%) - 🟒 +110 liter+3.9 cu ft (+10.0%)

      Weight Specifications

      Curb Weight:

      1220-1585 kg2690-3494 lbs
      πŸ”΄ -385 kg-849 lbs (-24.0%) - 🟒 +310 kg+683 lbs (+24.3%)
      1275-1605 kg2811-3538 lbs
      πŸ”΄ -310 kg-683 lbs (-19.6%) - 🟒 +385 kg+849 lbs (+31.6%)

      Maximal permitted Weight:

      1770-2075 kg3902-4575 lbs
      πŸ”΄ -385 kg-849 lbs (-17.9%) - 🟒 +215 kg+474 lbs (+11.6%)
      1860-2155 kg4101-4751 lbs
      πŸ”΄ -215 kg-474 lbs (-10.4%) - 🟒 +385 kg+849 lbs (+21.8%)

      Roof Load:

      75 kg165 lbs
      75 kg165 lbs

      Tire Specifications

      Rims Size:

      16-inch rims:
      • 7 J x 16
      • 7 J x 167 J x 16
      • 7.0J x 16
      • 7J x 16
      • 7.5J x 16
      17-inch rims:
      • 8 J x 17
      • 8J x 17
      18-inch rims:
      • 8 J x 18
      • 8J x 18
      19-inch rims:
      • 8 J x 19
      18-inch rims:
      • 8J x 18
      • 8.5J x 18
      • 7.5J x 18
      19-inch rims:
      • 8.5J x 19
      • 7.5J x 19
      17-inch rims:
      • 6.5J x 17
      16-inch rims:
      • 6.5J x 16

      Tire Size:

      • 205/55 R16 (W:205 | H:55 | D:16)
      • 205/55 R16 91 V (W:205 | H:55 | D:16)
      • 225/40 R18 (W:225 | H:40 | D:18)
      • 225/45 R17 (W:225 | H:45 | D:17)
      • 235/35 R19 (W:235 | H:35 | D:19)
      • 205/55 R17 (W:205 | H:55 | D:17)
      • 205/60 R16 (W:205 | H:60 | D:16)
      • 225/40 R19 (W:225 | H:40 | D:19)
      • 225/45 R18 (W:225 | H:45 | D:18)
      • 235/40 R18 (W:235 | H:40 | D:18)
      • 245/35 R19 (W:245 | H:35 | D:19)
      • 245/40 R18 (W:245 | H:40 | D:18)

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